Patent Assignment
Reel/Frame 014091/0951
Assignment of Assignor's Interest
Recorded: 2003-01-13
Pages: 5
Assignors
CUI, WEI
Executed: 2002-10-19
SOCZKA-GUTH, THOMAS
Executed: 2002-10-20
FRANK, GEORG
Executed: 2002-10-24
Assignee
CELANESE VENTURES GMBH
INDUSTRIEPARK HOECHST, GEB. F 821, 65926 FRANKFURT, GERMANY
Covered Property
(1)
Method for Producing Sulfonated Aromatic Polymers and Use of the Process Products for Producing Membranes
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Nov 14, 2005
From: HOECHST AG
To: AVENTIS PHARMA DEUTSCHLAND
Reel/Frame 017223/0694 →
Assignment of Assignor's Interest
Nov 14, 2005
From: CLEANESE VENTURES GMBH
To: PEMEAS GMBH
Reel/Frame 017230/0181 →
Assignment of Assignor's Interest
Nov 19, 2005
From: CELANESE VENTURES GMBH
To: PEMEAS GMBH
Reel/Frame 017325/0323 →