Patent Assignment
Reel/Frame 006138/0107
Assignment of Assignors Interest.
Recorded: 1992-05-27
Pages: 9
Assignee
HOECHST CELANESE CORPORATION, A DE CORP.
ROUTE 202-206, SOMERVILLE, NEW JERSEY, 08876-1258
Covered Property
(1)
Process for Preparing Stabilized Polybenzimidazole Products
Patent:
5,264,542 →
Application:
07/888,664 →
Related Assignments
(7)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Nov 24, 1998
From: HOECHST CELANESE CORPORATION
To: HOECHST AKTIENGESELLSCHAFT
Reel/Frame 009534/0147 →
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 14, 2005
From: CLEANESE VENTURES GMBH
To: PEMEAS GMBH
Reel/Frame 017230/0181 →
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 18, 2005
From: HOECHST AG
To: AVENTIS PHARMA DEUTSCHLAND
Reel/Frame 017240/0846 →
Assignment of Assignor's Interest
Nov 19, 2005
From: CELANESE VENTURES GMBH
To: PEMEAS GMBH
Reel/Frame 017325/0323 →
Assignment of Assignor's Interest
Nov 19, 2005
From: AVENTIS PHARMA DEUTSCHLAND
To: CELANESE VENTURES GMBH
Reel/Frame 017275/0116 →