Patent Assignment
Reel/Frame 006996/0284
Assignment of Assignor's Interest
Recorded: 1994-05-05
Pages: 3
Assignors
WAGENER, REINHARD
Executed: 1994-04-07
HELMER-METZMANN, FREDDY
Executed: 1994-04-07
HERRMANN-SCHONHERR, OTTO
Executed: 1994-04-07
Assignee
HOECHST AKTIENGESELLSCHAFT
65956 FRANKFURT AM MAIN, GERMANY
Covered Property
(1)
Semipermeable Membranes of Homogeneously Miscible Polymer Alloys
Patent:
5,505,851 →
Application:
08/173,997 →
Related Assignments
(5)
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: 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 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 →