Patent Assignment
Reel/Frame 013158/0278
Assignment of Assignor's Interest
Recorded: 2002-08-06
Pages: 2
Assignor
CELANESE CHEMICALS EUROPE GMBH
Executed: 2002-06-04
Assignee
CLARIANT GMBH
BRUENINGSTRASSE 50, 65929 FRANKFURT, GERMANY
Covered Property
(1)
Process for the Preparation of Hydroxybiarylphosphines and Novel Compounds of This Group of Substances
Patent:
5,789,623 →
Application:
08/661,629 →
Related Assignments
(6)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Sep 18, 1996
From: REGNAT, DIETER; KLEINER, HANS-JERG
To: HOECHST AG
Reel/Frame 008148/0377 →
Assignment of Assignor's Interest
Jun 15, 2000
From: AVENTIS RESEARCH & TECHNOLOGIES GMBH & CO. KG
To: CELANESE GMBH
Reel/Frame 010901/0246 →
Assignment of Assignor's Interest
Jun 15, 2000
From: HOECHST AKTIENGESELLSCHAFT
To: AVENTIS RESEARCH & TECHNOLOGY GMBH & CO. KG
Reel/Frame 010901/0425 →
Change of Name
Jul 17, 2006
From: CLARIANT GMBH
To: CLARIANT PRODUKTE (DEUTSCHLAND) GMBH
Reel/Frame 018224/0534 →
Change of Name
Aug 23, 2006
From: CLARIANT GMBH
To: CLARIANT PRODUKTE (DEUTSCHLAND) GMBH
Reel/Frame 018148/0817 →
Assignment of Assignor's Interest
Aug 31, 2006
From: CLARIANT PRODUKTE (DEUTSCHLAND) GMBH
To: ARCHIMICA GMBH
Reel/Frame 018184/0765 →