Patent Assignment
Reel/Frame 009534/0163
Assignment of Assignor's Interest
Recorded: 1998-11-24
Pages: 5
Assignor
HOECHST CELANESE CORPORATION
Executed: 1997-12-30
Assignee
HOECHST AKTIENGESELLSCHAFT
FRANKFURT AM MAIN, D-659, GERMANY
Covered Property
(1)
Acid - Modified Polybenzimidazole Fuel Cell Elements
Patent:
5,599,639 →
Application:
08/549,337 →
Related Assignments
(6)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Jun 4, 1996
From: SAMSONE,MICHAEL J.; ONORATO, FRANK J.; OGATA, NAOYA
To: HOECHST CELANESE CORPORATION
Reel/Frame 007980/0835 →
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: AVENTIS PHARMA DEUTSCHLAND GMBH
To: CELANESE VENTURES GMBH
Reel/Frame 017223/0711 →
Assignment of Assignor's Interest
Nov 18, 2005
From: HOECHST AG
To: AVENTIS PHARMA DEUTSCHLAND
Reel/Frame 017240/0846 →
Assignment of Assignor's Interest
Nov 19, 2005
From: AVENTIS PHARMA DEUTSCHLAND
To: CELANESE VENTURES GMBH
Reel/Frame 017275/0116 →
Assignment of Assignor's Interest
Nov 19, 2005
From: CELANESE VENTURES GMBH
To: PEMEAS GMBH
Reel/Frame 017325/0323 →