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Patent Assignment Assignee Details
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Assignee Name : DRILEX SYSTEMS, INC.
Total Assignments: 13
Assignment: 1
Reel/Frame:004911/0748   Pages: 3
Recorded: 06/24/1988
Conveyance: CHANGE OF NAME (SEE DOCUMENT FOR DETAILS).
Assignor
1
A-Z INTERNATIONAL TOOL COMPANY
Exec Dt:
05/08/1987
Assignee
1
DRILEX SYSTEMS, INC.
NOT PROVIDED
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4793424
NONE
07020260
Correspondence name and address
CORPORATE PATENT COUNSEL
MASCO INDUSTRIES, INC.
21001 VAN BORN RD.
TAYLOR, MI 48180
Assignment: 2
Reel/Frame:005010/0103   Pages: 3
Recorded: 01/23/1989
Conveyance: CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE, 6-5-87, TEXAS
Assignor
1
A-Z INTERNATIONAL TOOL COMPANY
Exec Dt:
05/08/1987
Assignee
1
DRILEX SYSTEMS, INC.
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4865137
NONE
07186716
Correspondence name and address
EDGAR A. ZARINS
MASCO INDUSTRIES, INC.
21001 VAN BORN ROAD
TAYLOR, MI 48180
Assignment: 3
Reel/Frame:006772/0238   Pages: 6
Recorded: 11/18/1993
Conveyance: CHANGE OF NAME (SEE DOCUMENT FOR DETAILS).
Assignor
1
A-Z INTERNATIONAL TOOL CO., INC.
Exec Dt:
05/08/1987
Assignee
1
DRILEX SYSTEMS, INC.
15151 SOMMERMEYER
HOUSTON, TEXAS 77008
Properties
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
4128108
NONE
05789018
 
4397355
NONE
06268482
 
4550781
NONE
06617746
 
4646826
NONE
06759737
 
4054040
NONE
UNAVAILABLE
 
4083405
NONE
UNAVAILABLE
 
4080115
NONE
UNAVAILABLE
Correspondence name and address
EDGAR A. ZARINS
LEGAL DEPARTMENT
MASCOTECH, INC.
21001 VAN BORN RD.
TAYLOR, MI 48180
Assignment: 4
Reel/Frame:004969/0240   Pages: 2
Recorded: 12/21/1987
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor
1
MASCO CORPORATION
Exec Dt:
12/10/1987
Assignee
1
DRILEX SYSTEMS, INC.
A TEXAS CORP.
STATELESS
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4397355
NONE
06268482
Correspondence name and address
JACK R. SPRINGGATE
VINSON & ELKINS
FIRST CITY NAT'L BANK BLDG.
HOUSTON, TX 77002
Assignment: 5
Reel/Frame:006388/0655   Pages: 3
Recorded: 01/25/1993
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor
1
FORREST, JOHN
Exec Dt:
03/27/1992
Assignee
1
DRILEX SYSTEMS, INC.
15151 SOMMERMEYER
HOUSTON, TEXAS 77041
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5269383
NONE
07822359
Correspondence name and address
EDGAR A. ZARINS
LEGAL DEPARTMENT
MASCO INDUSTRIES, INC.
21001 VAN BORN ROAD
TAYLOR, MI 48180
Assignment: 6
Reel/Frame:007491/0590   Pages: 2
Recorded: 05/18/1995
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
TEALE, DAVID W.
Exec Dt:
05/12/1995
Assignee
1
DRILEX SYSTEMS, INC.
15151 SOMMERSEYER
HOUSTON, TEXAS 77041
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5704838
NONE
08444227
Correspondence name and address
RUSSELL D. CULBERTSON
SHAFFER & CULBERTSON
1250 S. CAPITAL OF TEXAS HWY.
BUILDING ONE, STE.360
AUSTIN, TX 78746
Assignment: 7
Reel/Frame:008000/0673   Pages: 4
Recorded: 06/21/1996
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENSCO TECHNOLOGY COMPANY
Exec Dt:
02/14/1996
Assignee
1
DRILEX SYSTEMS, INC.
15151 SOMMERMEYER
HOUSTON, TEXAS 77041
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5339913
NONE
07927290
Correspondence name and address
SHAFFER & CULBERTSON
NEVIN SHAFFER
1250 CAPITAL OF TEXAS HIGHWAY SOUTH
BUILDING ONE, SUITE 360
AUSTIN, TEXAS 78746
Assignment: 8
Reel/Frame:008376/0819   Pages: 2
Recorded: 03/04/1997
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
DRILEX UK LIMITED
Exec Dt:
02/04/1997
Assignee
1
DRILEX SYSTEMS, INC.
15151 SOMMERMEYER
HOUSTON, TEXAS 77041
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4807708
NONE
07079780
Correspondence name and address
SHAFFER & CULBERTSON
J. NEVIN SHAFFER, JR.
1250 CAPITAL OF TEXAS HWY. S.
BUILDING I, SUITE 360
AUSTIN, TX 78746
Assignment: 9
Reel/Frame:008376/0856   Pages: 2
Recorded: 03/03/1997
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
DRILEX UK LIMITED
Exec Dt:
02/04/1997
Assignee
1
DRILEX SYSTEMS, INC.
15151 SOMMERMEYER
HOUSTON, TEXAS 77041
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4844179
NONE
07079779
Correspondence name and address
SHAFFER & CULBERTSON
J. NEVIN SHAFFER, JR.
1250 CAPITAL OF TEXAS HWY. S.
BUILDING I, SUITE 360
AUSTIN, TX 78746
Assignment: 10
Reel/Frame:008376/0915   Pages: 2
Recorded: 03/04/1997
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
DRILEX UK LIMITED
Exec Dt:
02/04/1997
Assignee
1
DRILEX SYSTEMS, INC.
15151 SOMMERMEYER
HOUSTON, TEXAS 77041
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4775017
NONE
07133062
Correspondence name and address
SHAFFER & CULBERTSON
J. NEVIN SHAFFER, JR.
1250 CAPITAL OF TEXAS HWY. S.
BUILDING I, SUITE 360
AUSTIN, TX 78746
Assignment: 11
Reel/Frame:008382/0636   Pages: 2
Recorded: 03/03/1997
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
DRILEX UK LIMITED
Exec Dt:
02/04/1997
Assignee
1
DRILEX SYSTEMS, INC.
15151 SOMMERMEYER
HOUSTON, TEXAS 77041
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4796704
NONE
07027231
Correspondence name and address
SHAFFER & CULBERTSON
J. NEVIN SHAFFER, JR.
1250 CAPITAL OF TEXAS HWY. S.
BUILDING I, STE. 360
AUSTIN, TX 78746
Assignment: 12
Reel/Frame:008423/0586   Pages: 2
Recorded: 03/31/1997
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
SHAREWELL, INC.
Exec Dt:
03/18/1997
Assignee
1
DRILEX SYSTEMS, INC.
15151 SOMMERMEYER
HOUSTON, TEXAS 77041
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5320180
NONE
07958281
Correspondence name and address
SHAFFER & CULBERTSON
J. NEVIN SHAFFER, JR.
1250 CAPITAL OF TEXAS HWY. S.
BUILDING ONE, SUITE 360
AUSTIN, TX 78746
Assignment: 13
Reel/Frame:008698/0934   Pages: 5
Recorded: 09/11/1997
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
ENSCO TECHNOLOGY COMPANY
Exec Dt:
08/21/1997
Assignee
1
DRILEX SYSTEMS, INC.
15151 SOMMERMEYER
HOUSTON, TEXAS 77041
Properties
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
5107939
NONE
07665877
 
5131464
NONE
07710621
 
5141051
NONE
07831708
Correspondence name and address
BAKER HUGHES INCORPORATED
SANDRA E. ALFORD
PAENT DEPT.
3900 ESSEX LANE
HOUSTON, TX 77027

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