IP Library › Assignment 013976/0715
Patent Assignment
Reel/Frame 013976/0715

Assignment of Assignor's Interest

Recorded: 2002-12-19 Pages: 2
Assignor
CUI, WEI
Executed: 2002-10-24
Assignee
CELANESE VENTURES GMBH
INDUSTRIEPARK HOECHST, GEB. F 821, FRANKFURT, 65926, GERMANY
Covered Property (1)
Novel Blend Polymer Membranes for Use in Fuel Cells
Patent: 6,869,980 →
Application: 10/220,899 →
Publication: US 2003/0187081
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 →