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Patent Assignment Abstract of Title
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Total Assignments: 5
Patent #:
Issue Dt:
06/07/1994
Application #:
08084783
Filing Dt:
06/29/1993
Inventors:
DOUGLAS J. GRIMES, HEINZ MUELLER, CLAUS-PETER HEROLD, STEPHAN VON TAPAVICZA et al
Title:
USE OF SELECTED ESTER OILS OF LOW CARBOXYLIC ACIDS IN DRILLING FLUIDS
Assignment: 1
Reel/Frame:
008587/0112Recorded: 07/03/1997Pages: 3
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor:
Exec Dt:
06/02/1997
Assignee:
197 KNIGHTS BRIDGE
LONDON, ENGLAND
Correspondent:
CONNOLLY AND HUTZ
WILLIAM E. MCSHANE
1220 MARKET STREET
P.O. BOX 2207
WILMINGTON, DE 19899
Assignment: 2
Reel/Frame:
010832/0696Recorded: 05/23/2000Pages: 3
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor:
Exec Dt:
01/20/2000
Assignees:
D-40191
HENKELSTRASSE 67
DUESSELDORF, GERMANY
D-40191
197 KNIGHTS BRIDGE
LONDON, ENGLAND
Correspondent:
CONNOLLY BOVE LODGE & HUNTZ
WILLIAM E. MCSHANE
1220 MARKET STREET
P.O. BOX 2207
WILMINGTON, DE 19899
Assignment: 3
Reel/Frame:
014462/0055Recorded: 03/25/2004Pages: 3
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor:
Exec Dt:
03/18/2004
Assignee:
HENKELSTRASSE 67
DUESSELDORF, GERMANY 40589
Correspondent:
COGNIS CORPORATION
JOHN E. DRACH
300 BROOKSIDE AVENUE
PATENT DEPARTMENT
AMBLER, PA 19002
Assignment: 4
Reel/Frame:
025766/0308Recorded: 02/08/2011Pages: 12
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor:
Exec Dt:
12/21/2005
Assignee:
HENKELSTRASSE 67
DUESSELDORF, GERMANY 40589
Correspondent:
DIEHL SERVILLA LLC
33 WOOD AVENUE SOUTH
SECOND FLOOR, SUITE 210
ISELIN, NEW JERSEY 08830
Assignment: 5
Reel/Frame:
025766/0142Recorded: 02/08/2011Pages: 7
Conveyance:
CHANGE OF NAME (SEE DOCUMENT FOR DETAILS).
Assignor:
Exec Dt:
05/12/2009
Assignee:
HENKELSTRASSE 67
DUESSELDORF, GERMANY 40589
Correspondent:
DIEHL SERVILLA LLC
33 WOOD AVENUE SOUTH
SECOND FLOOR, SUITE 210
ISELIN, NEW JERSEY 08830

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