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Patent Assignment Assignor Details
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Assignor Name : FRAENKEL, DAN
Total Assignments: 23
Assignment: 1
Reel/Frame:004244/0622   Pages: 1
Recorded: 03/23/1984
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
FRAENKEL, DAN
Exec Dt:
03/04/1984
2
LEVY, MOSHE
Exec Dt:
02/29/1984
3
CHERNIAVSKY, MARGARET
Exec Dt:
02/29/1984
Assignee
1
YEDA RESEARCH AND DEVELOPMENT COMPANY LIMITED
P.O. BOX 95
REHOVOT, ISRAEL
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4593137
NONE
06592795
Correspondence name and address
BROWDY AND NEIMARK
419 7TH STREET, NW
WASHINGTON, DC 20004
Assignment: 2
Reel/Frame:008063/0211   Pages: 3
Recorded: 07/29/1996
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRAENKEL, DAN
Exec Dt:
06/29/1994
2
MOSELLE, INEZ L.
Exec Dt:
06/29/1994
Assignee
1
ENGELHARD CORPORATION
101 WOOD AVENUE
ISELIN, NEW JERSEY 08830
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5565399
NONE
08268385
Correspondence name and address
ENGELHARD CORPORATION
INEZ L. MOSELLE
101 WOOD AVENUE
ISELIN, NJ 08830
Assignment: 3
Reel/Frame:009672/0341   Pages: 3
Recorded: 12/28/1998
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRAENKEL, DAN
Exec Dt:
12/02/1998
2
FUNKE, HANS H.
Exec Dt:
12/02/1998
3
COOPER, GERALD
Exec Dt:
12/02/1998
Assignee
1
MATHESON GAS PRODUCTS
1861 LEFTHAND CIRCLE
LONGMONT, COLORADO 80501
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6110258
NONE
09166987
Correspondence name and address
PENNIE & EDMONDS LLP
FRANK E. MORRIS
1155 AVENUE OF THE AMERICAS
NEW YORK, NY 10036
Assignment: 4
Reel/Frame:010376/0952   Pages: 2
Recorded: 11/05/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRAENKEL, DAN
Exec Dt:
10/06/1999
2
COOPER, GERALD
Exec Dt:
10/06/1999
Assignee
1
MATHESON GAS PRODUCTS
1861 LEFTHAND CIRCLE
LONGMONT, COLORADO 80501
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6526803
NONE
09388084
Correspondence name and address
PENNIE & EDMONDS LLP
FRANCIS E. MORRIS
1155 AVENUE OF THE AMERICAS
NEW YORK, NEW YORK 10036
Assignment: 5
Reel/Frame:010980/0312   Pages: 3
Recorded: 06/21/2000
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BHADHA, PAUL M.
Exec Dt:
04/26/2000
2
WATANABE, TADAHARU
Exec Dt:
04/26/2000
3
FRAENKEL, DAN
Exec Dt:
04/26/2000
Assignee
1
MATHESON TRI-GAS, INC.
959 ROUTE 46 EAST
PARSIPPANY, NEW JERSEY 07054
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6395070
NONE
09543246
Correspondence name and address
PENNIE & EDMONDS LLP
FRANCIS E. MORRIS
1155 AVENUE OF THE AMERICAS
NEW YORK, NY 10036
Assignment: 6
Reel/Frame:011527/0909   Pages: 5
Recorded: 02/06/2001
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FUNKE, HANS H.
Exec Dt:
02/05/2001
2
FRAENKEL, DAN
Exec Dt:
02/05/2001
3
HOULDING, VIRGINIA H.
Exec Dt:
02/05/2001
Assignee
1
MATHESON TRI-GAS INC.
1861 LEFTHAND CIRCLE
A DELAWARE CORPORATION
LONGMONT, COLORADO 80501
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6547861
US20020096049
09777741
Correspondence name and address
HOGAN & HARTSON LLP
SARAH O'ROUKE
1200 17TH STREET, SUITE 1500
DENVER, CO 80202
Assignment: 7
Reel/Frame:013363/0721   Pages: 4
Recorded: 10/02/2002
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FUNKE, HANS
Exec Dt:
02/05/2001
2
FRAENKEL, DAN
Exec Dt:
02/05/2001
3
HOULDING, VIRGINIA
Exec Dt:
02/05/2001
Assignee
1
MATHESON TRI-GAS, INC.
1861 LEFTHAND CIRCLE
LONGMONT, COLORADO 80501
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6709482
US20030024391
10263134
Correspondence name and address
HOGAN & HARTSON LLP
STEVEN C. PETERSEN
1200 17TH STREET, SUITE 1500
ONE TABOR CENTER
DENVER, CO 80202
Assignment: 8
Reel/Frame:013364/0337   Pages: 4
Recorded: 10/02/2002
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FUNKE, HANS
Exec Dt:
02/05/2001
2
FRAENKEL, DAN
Exec Dt:
02/05/2001
3
HOULDING, VIRGINIA
Exec Dt:
02/05/2001
Assignee
1
MATHESON TRI-GAS, INC.
1861 LEFTHAND CIRCLE
LONGMONT, COLORADO 80501
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6720282
US20030024394
10263410
Correspondence name and address
HOGAN & HARTSON LLP
STEVEN C. PETERSEN
ONE TABOR CENTER
1200 17TH STREET, SUITE 1500
DENVER, CO 80202
Assignment: 9
Reel/Frame:013364/0634   Pages: 4
Recorded: 10/02/2002
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FUNKE, HANS F.
Exec Dt:
02/05/2001
2
FRAENKEL, DAN
Exec Dt:
02/05/2001
3
HOULDING, VIRGINIA H.
Exec Dt:
02/05/2001
Assignee
1
MATHESON TRI-GAS, INC.
1861 LEFTHAND CIRCLE
LONGMONT, COLORADO 80501
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6710012
US20030041734
10263398
Correspondence name and address
HOGAN & HARTSON L.L.P.
STEVEN C. PETERSEN
1200 17TH STREET, SUITE 1500
DENVER, CO 80202
Assignment: 10
Reel/Frame:013365/0981   Pages: 4
Recorded: 10/02/2002
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FUNKE, HANS
Exec Dt:
02/05/2001
2
FRAENKEL, DAN
Exec Dt:
02/05/2001
3
HOULDING, VIRGINIA
Exec Dt:
02/05/2001
Assignee
1
MATHESON TRI-GAS
1861 LEFTHAND CIRCLE
LONGMONT, COLORADO 80501
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6797036
US20030033936
10263406
Correspondence name and address
HOGAN & HARTSON LLP
STEVEN PETERSEN
ONE TABOR CENTER
1200 17TH STREET, SUITE 1500
DENVER, CO 80202
Assignment: 11
Reel/Frame:013366/0619   Pages: 4
Recorded: 10/02/2002
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FUNKE, HANS
Exec Dt:
02/05/2001
2
FRAENKEL, DAN
Exec Dt:
02/05/2001
3
HOULDING, VIRGINIA
Exec Dt:
02/05/2001
Assignee
1
MATHESON TRI-GAS, INC.
1861 LEFTHAND CIRCLE
LONGMONT, COLORADO 80501
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6783576
US20030024395
10263433
Correspondence name and address
HOGAN & HARTSON LLP
STEVEN C. PETERSEN
ONE TABOR CENTER
1200 17TH STREET, SUITE 1500
DENVER, CO 80202
Assignment: 12
Reel/Frame:013366/0701   Pages: 4
Recorded: 10/02/2002
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FUNKE, HANS
Exec Dt:
02/05/2001
2
FRAENKEL, DAN
Exec Dt:
02/05/2001
3
HOULDING, VIRGINIA
Exec Dt:
02/05/2001
Assignee
1
MATHESON TRI-GAS, INC.
1861 LEFTHAND CIRCLE
LONGMONT, COLORADO 80501
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6783577
US20030024396
10263441
Correspondence name and address
HOGAN & HARTSON LLP
STEVEN C. PETERSEN
ONE TABOR CENTER
1200 17TH STREET, SUITE 1500
DENVER, CO 80202
Assignment: 13
Reel/Frame:011969/0808   Pages: 6
Recorded: 04/04/2001
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FUNKE, HANS H.
Exec Dt:
04/02/2001
2
FRAENKEL, DAN
Exec Dt:
03/28/2001
3
HOULDING, VIRGINIA H.
Exec Dt:
03/28/2001
Assignee
1
MATHESON TRI-GAS, INC.
1861 LEFTHAND CIRCLE
LONGMONT, COLORADO 80501
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6425946
US20020078825
09748734
Correspondence name and address
SARA O'ROURKE
HOGAN & HARTSON LLP
1200 17TH STREET, SUITE 1500
DENVER, CO 80202
Assignment: 14
Reel/Frame:012181/0860   Pages: 6
Recorded: 09/17/2001
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WATANABE, TADAHARU
Exec Dt:
08/27/2001
2
FRAENKEL, DAN
Exec Dt:
08/27/2001
Assignee
1
MATHESON TRI-GAS
A COLORADO CORPORATION
1861 LEFTHAND CIRCLE
LONGMONT, COLORADO 80501
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6461411
US20020100366
09954239
Correspondence name and address
HOGAN & HARTSON LLP
SARAH S. O'ROURKE
1200 17TH STREET, SUITE 1500
DENVER, CO 80202
Assignment: 15
Reel/Frame:012710/0548   Pages: 4
Recorded: 03/21/2002
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WATANABE, TADAHARU
Exec Dt:
03/19/2002
2
FRAENKEL, DAN
Exec Dt:
03/19/2002
Assignee
1
MATHESON TRI-GAS
1861 LEFTHAND CIRCLE
LONGMONT, COLORADO 80501
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6733734
US20030097929
10003179
Correspondence name and address
HOGAN & HARTSON LLP
STEVEN C. PETERSEN
ONE TABOR CENTER
1200 17TH STREET, SUITE 1500
DENVER, CO 80202
Assignment: 16
Reel/Frame:013591/0752   Pages: 5
Recorded: 12/17/2002
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WATANABE, TADAHARU
Exec Dt:
11/21/2002
2
FRAENKEL, DAN
Exec Dt:
12/05/2002
Assignee
1
MATHESON TRI-GAS
1861 LEFTHAND CIRCLE
LONGMONT, COLORADO 80501
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7033418
US20030097932
10260060
Correspondence name and address
HOGAN & HARTSON LLP
STEVEN C. PETERSEN
ONE TABOR CENTER
1200 17TH STREET, SUITE 1500
DENVER, CO 80202
Assignment: 17
Reel/Frame:015069/0178   Pages: 4
Recorded: 03/12/2004
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
ESPINOZA, RAFAEL L.
Exec Dt:
12/09/2003
2
FRAENKEL, DAN
Exec Dt:
12/08/2003
3
COY, KEVIN L.
Exec Dt:
12/08/2003
Assignee
1
CONOCOPHILLIPS COMPANY
600 NORTH DAIRY ASHFORD
HOUSTON, TEXAS 77079
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7276540
US20040132832
10706202
Correspondence name and address
CONOCOPHILLIPS COMPANY
DAVID W. WESTPHAL
P.O. BOX 1267
PONCA CITY, OK 74602-1267
Assignment: 18
Reel/Frame:014841/0226   Pages: 3
Recorded: 12/31/2003
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
FRAENKEL, DAN
Exec Dt:
12/18/2003
Assignee
1
CONOCOPHILLIPS COMPANY
600 NORTH DAIRY ASHFORD
HOUSTON, TEXAS 77079
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7163963
US20050054738
10657585
Correspondence name and address
CONOCOPHILLIPS COMPANY
TOD T. TUMEY
P.O. BOX 1267
PONCA CITY, OK 74602-1267
Assignment: 19
Reel/Frame:016152/0573   Pages: 5
Recorded: 01/11/2005
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SPENA, MICHAEL D.
Exec Dt:
12/17/2004
2
JACK, DOUG S.
Exec Dt:
12/14/2004
3
FRAENKEL, DAN
Exec Dt:
12/20/2004
Assignee
1
CONOCOPHILLIPS COMPANY
600 NORTH DAIRY ASHFORD
HOUSTON, TEXAS 77079
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20060111232
10994428
Correspondence name and address
DAVID W. WESTPHAL
P.O. BOX 1267
PONCA CITY, OK 74602
Assignment: 20
Reel/Frame:016316/0664   Pages: 5
Recorded: 02/28/2005
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SPENA, MICHAEL D.
Exec Dt:
12/17/2004
2
JACK, DOUG S.
Exec Dt:
12/14/2004
3
FRAENKEL, DAN
Exec Dt:
12/20/2004
Assignee
1
CONOCOPHILLIPS COMPANY
600 NORTH DAIRY ASHFORD
HOUSTON, TEXAS 77079
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6974842
NONE
10994506
Correspondence name and address
DAVID W. WESTPHAL
P.O. BOX 1267
PONCA CITY, OK 74602
Assignment: 21
Reel/Frame:022675/0174   Pages: 10
Recorded: 05/13/2009
Attorney Dkt #:2574-06401
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DEMIREL, BELMA
Exec Dt:
06/11/2008
2
BENHAM, CHARLES B.
Exec Dt:
06/12/2008
3
FRAENKEL, DAN
Exec Dt:
06/17/2008
4
BLEY, RICHARD
Exec Dt:
06/13/2008
5
TAYLOR, JESSE W.
Exec Dt:
06/11/2008
6
ROLFE, SARA L.
Exec Dt:
06/12/2008
7
WRIGHT, HAROLD A.
Exec Dt:
06/10/2008
Assignee
1
RENTECH, INC.
10877 WILSHIRE BLVD.
SUITE 710
LOS ANGELES, CALIFORNIA 90024
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10086365
US20090062108
12198459
Correspondence name and address
TIMOTHY S. WESTBY
CONLEY ROSE, P.C.
P.O. BOX 3267
HOUSTON, TX 77253-3267
Assignment: 22
Reel/Frame:024417/0862   Pages: 10
Recorded: 05/20/2010
Attorney Dkt #:2574-06401
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DEMIREL, BELMA
Exec Dt:
06/11/2008
2
BENHAM, CHARLES B
Exec Dt:
06/12/2008
3
FRAENKEL, DAN
Exec Dt:
06/17/2008
4
BLEY, RICHARD
Exec Dt:
06/13/2008
5
TAYLOR, JESSE W.
Exec Dt:
06/11/2008
6
ROLFE, SARA L
Exec Dt:
06/12/2008
7
WRIGHT, HAROLD A
Exec Dt:
06/10/2008
Assignee
1
RENTECH INC.
10877 WILSHIRE BLVD., SUITE 600
LOS ANGELES, CALIFORNIA 90024
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10086365
US20090062108
12198459
Correspondence name and address
TIMOTHY S. WESTBY
CONLEY ROSE, P.C.
P.O. BOX 3267
HOUSTON, TX 77253-3267
Assignment: 23
Reel/Frame:024433/0958   Pages: 10
Recorded: 05/25/2010
Attorney Dkt #:2574-06403
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
DEMIREL, BELMA
Exec Dt:
06/11/2008
2
BENHAM, CHARLES B
Exec Dt:
06/12/2008
3
FRAENKEL, DAN
Exec Dt:
06/17/2008
4
BLEY, RICHARD
Exec Dt:
06/13/2008
5
TAYLOR, JESSE W
Exec Dt:
06/11/2008
6
ROLFE, SARA L
Exec Dt:
06/12/2008
7
WRIGHT, HAROLD A
Exec Dt:
06/10/2008
Assignee
1
RENTECH, INC.
10877 WILSHIRE BLVD., SUITE 600
LOS ANGELES, CALIFORNIA 90024
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
7915193
US20090111684
12272960
Correspondence name and address
TIMOTHY S. WESTBY
CONLEY ROSE, P.C.
P.O. BOX 3267
HOUSTON, TX 77253-3267

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