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Patent Assignment Assignor Details
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Assignor Name : ENVIROTECH CORPORATION
Total Assignments: 74
Assignment: 1
Reel/Frame:003801/0505   Pages: 2
Recorded: 09/12/1980
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
05/01/1980
Assignee
1
LURGI CORPORATION
1 DAVIS DRIVE
A CORP. OF DE.
BELMONT, CALIFORNIA 94002
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
RE31046
NONE
06066701
Correspondence name and address
FLEHR, HOHBACH, TEST ET AL
160 SANSOME ST.
SAN FRANCISCO, CA. 94104
Assignment: 2
Reel/Frame:003841/0554   Pages: 1
Recorded: 03/19/1981
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
03/04/1981
Assignee
1
LURGI CORPORATION
1 DAVIS DRIVE
A CORP. OF DE.
BELMONT, CALIFORNIA 94002
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4248164
NONE
06018389
Correspondence name and address
FLEHR, HOHBACH ET AL
160 SANSOME ST.
SAN FRANCISCO, CA. 94104
Assignment: 3
Reel/Frame:003986/0974   Pages: 3
Recorded: 04/08/1982
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
03/27/1981
Assignee
1
BAHNSON COMPANY, THE
1001 SOUTH MARSHALL ST.
WINSTON-SALEM, NORTH CAROLINA 27108
Properties
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
4246987
NONE
06026980
 
4266948
NONE
06109695
 
4339782
NONE
06134361
 
4342130
NONE
06228825
Correspondence name and address
DANN, DORFMAN, HERRELL, ET AL.
1310 FIDELITY BLDG.
123 S. BROAD ST.
PHILADELPHIA, PA. 19109
Assignment: 4
Reel/Frame:003933/0138   Pages: 7
Recorded: 07/15/1981
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
04/25/1981
Assignee
1
GENERAL ELECTRIC COMPANY, A CORP. OF NY.
1 RIVER RD
SCHENECTADY, NEW YORK
Properties
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
3567194
NONE
04835157
 
3668836
NONE
05004947
 
4147756
NONE
05675364
 
RE30480
NONE
05781897
 
4267502
NONE
06041965
 
4308494
NONE
06050282
 
4256466
NONE
06057625
 
4284417
NONE
06130642
 
4305736
NONE
06144713
 
4294591
NONE
06148845
 
4290787
NONE
06148846
 
4322224
NONE
06202175
Correspondence name and address
P.L. SCHLAMP
GENERAL ELECTRIC CO.
2001 JEFFERSON DAVIS HWY.
ARLINGTON, VA. 22202
Assignment: 5
Reel/Frame:003927/0092   Pages: 3
Recorded: 10/22/1981
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
10/09/1981
Assignee
1
DRESSER INDUSTRIES, INC.
DRESSER BLDG.
DALLAS, TEXAS 75201
Properties
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
4246010
NONE
05682217
 
4152183
NONE
05816009
 
4360367
NONE
06295970
 
4362538
NONE
06295971
 
4360366
NONE
06309177
Correspondence name and address
DANIEL RUBIN
DRESSER INDUSTRIES, INC.
P.O. BOX 718
DALLAS, TX. 75221
Assignment: 6
Reel/Frame:004142/0089   Pages: 2
Recorded: 06/27/1983
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
06/02/1983
Assignee
1
O'CONNOR COMBUSTOR CORPORATION,
SOUTH CAROLINA
Properties
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
3822651
NONE
05394050
 
4066024
NONE
05644127
Correspondence name and address
BAILEY & HARDWAY
125 BROADUS AVE.
GREENVILLE, SC 29601
Assignment: 7
Reel/Frame:004184/0732   Pages: 1
Recorded: 11/02/1983
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
10/25/1983
Assignee
1
ENVIROTECH COAL SERVICES OF WEST VIRGINIA, INC.
BECKLEY, W., VIRGINIA
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4405453
NONE
06351384
Correspondence name and address
EIMCO PROCESS EQUIPMENT COMPANY
P.O. BOX 300
SALT LAKE CITY, UT. 84110
Assignment: 8
Reel/Frame:005252/0145   Pages: 4
Recorded: 08/10/1989
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/31/1989
Assignee
1
TAMROCK WORLD CORPORATION N.V., C/O PIERSON, HELDRING & PIERSON
6 JOHN B. GORSIRAWEG
A CORP. OF THE NETHERLANDS ANTILLES
CURACAO, NETHERLANDS ANTILLES
Properties
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
4284368
NONE
06004429
 
4265587
NONE
06060267
 
4447072
NONE
06330545
 
4465293
NONE
06437497
 
4439938
NONE
06549213
 
4588037
NONE
06680617
Correspondence name and address
EVAN M. KENT
MCDERMOTT, WILL & EMERY
111 WEST MONROE STREET
CHICAGO, ILLINOIS 60603-4067
Assignment: 9
Reel/Frame:005623/0853   Pages: 4
Recorded: 03/08/1991
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
03/07/1991
Assignee
1
BAKER HUGHES INCORPORATED, A DE CORP.
3900 ESSEX LANE
SUITE 1200
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5092482
NONE
07492776
Correspondence name and address
BAKER HUGHES INCORPORATED
3900 ESSEX LANE - SUITE 1200
P.O. BOX 4740
HOUSTON, TX 77210-4740
ATTN: CARL A. ROWOLD
Assignment: 10
Reel/Frame:007150/0105   Pages: 4
Recorded: 09/26/1994
Conveyance: MERGER (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
03/02/1994
Assignee
1
BAKER ACQUISITION CORPORATION
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4293417
NONE
06143991
Correspondence name and address
CARL A. ROWOLD
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
SUITE 1200
HOUSTON, TX 77027
Assignment: 11
Reel/Frame:007061/0465   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5106499
NONE
07494224
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 12
Reel/Frame:007061/0468   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4697511
NONE
06753033
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 13
Reel/Frame:007061/0471   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4624787
NONE
06731172
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 14
Reel/Frame:007061/0474   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4927537
NONE
07321440
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 15
Reel/Frame:007061/0477   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4647215
NONE
06837979
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 16
Reel/Frame:007061/0480   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4806239
NONE
06936091
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 17
Reel/Frame:007061/0488   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4424130
NONE
06414149
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 18
Reel/Frame:007061/0491   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4865753
NONE
07207987
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 19
Reel/Frame:007061/0494   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4401576
NONE
06220843
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 20
Reel/Frame:007061/0501   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4848749
NONE
07222461
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 21
Reel/Frame:007061/0504   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4515694
NONE
06490741
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 22
Reel/Frame:007061/0510   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5064532
NONE
07580110
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 23
Reel/Frame:007066/0045   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4764314
NONE
07013158
Correspondence name and address
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Assignment: 24
Reel/Frame:007066/0048   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4737288
NONE
06714165
Correspondence name and address
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Assignment: 25
Reel/Frame:007066/0051   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5116443
NONE
07491687
Correspondence name and address
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Assignment: 26
Reel/Frame:007066/0054   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4933524
NONE
07325274
Correspondence name and address
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Assignment: 27
Reel/Frame:007066/0057   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4526691
NONE
06448491
Correspondence name and address
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Assignment: 28
Reel/Frame:007066/0060   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES CORPORATION
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5006241
NONE
07312910
Correspondence name and address
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Assignment: 29
Reel/Frame:007066/0072   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4710293
NONE
06806656
Correspondence name and address
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Assignment: 30
Reel/Frame:007067/0785   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
ATTN: MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5092482
NONE
07492776
Correspondence name and address
BAKER HUGHES INCORPORATED
ATTN: MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 31
Reel/Frame:007067/0788   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5227136
NONE
07612585
Correspondence name and address
BAKER HUGHES INCORPORATED
ATTN: MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 32
Reel/Frame:007067/0791   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5057284
NONE
07322666
Correspondence name and address
BAKER HUGHES INCORPORATED
ATTN: MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 33
Reel/Frame:007067/0794   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5007620
NONE
07235238
Correspondence name and address
BAKER HUGHES INCORPORATED
ATTN: MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 34
Reel/Frame:007067/0811   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4974816
NONE
07005670
Correspondence name and address
BAKER HUGHES INCORPORATED
ATTN: MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 35
Reel/Frame:007067/0814   Pages: 3
Recorded: 07/18/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/08/1994
Assignee
1
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4732608
NONE
06827324
Correspondence name and address
BAKER HUGHES INCORPORATED
ATTN: MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 36
Reel/Frame:007078/0798   Pages: 3
Recorded: 07/25/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/18/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
DAWSON, MARYLU
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4364827
NONE
06107213
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 37
Reel/Frame:007078/0810   Pages: 3
Recorded: 07/25/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/18/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
DAWSON, MARYLU
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4336139
NONE
06209937
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 38
Reel/Frame:007078/0816   Pages: 3
Recorded: 07/25/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/18/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
DAWSON, MARYLU
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4110210
NONE
05791102
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 39
Reel/Frame:007078/0819   Pages: 3
Recorded: 07/25/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/18/1994
Assignee
1
BAKER HUGHES INCORPORATED DAWSON, MARYLU
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4271027
NONE
06025804
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 40
Reel/Frame:007078/0825   Pages: 3
Recorded: 07/25/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/18/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
DAWSON, MARYLU
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4275020
NONE
05944116
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 41
Reel/Frame:007082/0251   Pages: 3
Recorded: 07/25/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/18/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
MARYLU DAWSON
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4217916
NONE
06025758
Correspondence name and address
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 42
Reel/Frame:007082/0257   Pages: 3
Recorded: 07/25/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/18/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4259777
NONE
06148626
Correspondence name and address
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 43
Reel/Frame:007082/0263   Pages: 3
Recorded: 07/25/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/18/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
MARYLU DAWSON
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4226706
NONE
06065028
Correspondence name and address
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 44
Reel/Frame:007082/0275   Pages: 3
Recorded: 07/25/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/18/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
MARYLU DAWSON
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4282082
NONE
06116507
Correspondence name and address
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 45
Reel/Frame:007082/0287   Pages: 3
Recorded: 07/25/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/18/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
MARYLU DAWSON
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4391705
NONE
06268214
Correspondence name and address
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 46
Reel/Frame:007082/0290   Pages: 3
Recorded: 07/25/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/18/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
MARYLU DAWSON
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4378437
NONE
06315719
Correspondence name and address
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 47
Reel/Frame:007082/0293   Pages: 3
Recorded: 07/25/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/18/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
MARYLU DAWSON
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4401576
NONE
06220843
Correspondence name and address
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 48
Reel/Frame:007089/0250   Pages: 3
Recorded: 07/25/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/18/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
MARYLU DAWSON
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4293411
NONE
06114855
Correspondence name and address
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Assignment: 49
Reel/Frame:007089/0262   Pages: 3
Recorded: 07/25/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/18/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
MARYLU DAWSON
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4290865
NONE
06114477
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Assignment: 50
Reel/Frame:007089/0265   Pages: 3
Recorded: 07/25/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/18/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
MARYLU DAWSON
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4256553
NONE
06114476
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Assignment: 51
Reel/Frame:007089/0268   Pages: 3
Recorded: 07/25/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/18/1994
Assignee
1
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
MARYLU DAWSON
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4216094
NONE
06022236
Correspondence name and address
MARYLU DAWSON
BAKER HUGHES INCORPORATED
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Assignment: 52
Reel/Frame:007118/0736   Pages: 3
Recorded: 07/25/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
07/18/1994
Assignee
1
BAKER HUGHES INCORPORATED
MARYLU DAWSON 3900 ESSEX LANE
HOUSTON, TEXAS 77027
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4247400
NONE
06030673
Correspondence name and address
BAKER HUGHES INCORPORATED
MARYLU DAWSON
3900 ESSEX LANE
HOUSTON, TX 77027
Assignment: 53
Reel/Frame:007198/0868   Pages: 5
Recorded: 11/10/1994
Conveyance: CHANGE OF NAME (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
09/25/1994
Assignee
1
EVT HOLDINGS, INC.
PATENT DEPT. 3900 ESSEX LANE
HOUSTON,, TEXAS
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5361708
NONE
08015409
Correspondence name and address
BAKER HUGHES INCORPORATED
SANDRA E. ALFORD
PATENT DEPT.
3900 ESSEX LANE, SUITE 1200
HOUSTON, TX 77027
Assignment: 54
Reel/Frame:007629/0417   Pages: 5
Recorded: 08/28/1995
Conveyance: CHANGE OF NAME (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENVIROTECH CORPORATION
Exec Dt:
09/30/1994
Assignee
1
EVT HOLDINGS, INC.
SUITE 1200
3900 ESSEX LANE
HOUSTON, TEXAS 77027
Properties
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
4782789
NONE
07112397
 
5011597
NONE
07384833
 
4986903
NONE
07385005
 
5080780
NONE
07563323
Correspondence name and address
BAKER HUGHES INCORPORATED
LORETTA BOGAARD
3900 ESSEX LANE, SUITE 1200
HOUSTON, TEXAS 77027

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