Patent Assignment
Reel/Frame 006637/0076
Assignment of Assignor's Interest
Recorded: 1993-07-19
Pages: 2
Assignors
WILHARM, PETER
Executed: 1993-06-21
WELLER, THOMAS
Executed: 1993-06-23
MEIER, MICHAEL
Executed: 1993-06-23
Assignee
HOECHST AG
ZENTRALE PATENTABTEILUNG, POSTFACH 80 03 20 D-6230 FRANKFURT AM MAIN 80 GERMANY, GERMANY
Covered Property
(1)
Polyarylene Ethers Containing Xanthone Units, a Process for Their Preparation, and Their Use
Patent:
5,395,914 →
Application:
08/067,709 →
Related Assignments
(5)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Jul 20, 2001
From: HOESCHST AKTIENGESELLSCHAFT
To: TICONA GMBH
Reel/Frame 011979/0872 →
Assignment of Assignor's Interest
Nov 7, 2005
From: TICONA GMBH
To: DEGUSSA AG
Reel/Frame 017186/0572 →
Change Address
Feb 22, 2010
From: EVONIK DEGUSSA GMBH
To: EVONIK DEGUSSA GMBH
Reel/Frame 023985/0296 →
Change of Entity
Feb 22, 2010
From: DEGUSSA AG
To: DEGUSSA GMBH
Reel/Frame 023998/0937 →
Change of Name
Feb 23, 2010
From: DEGUSSA GMBH
To: EVONIK DEGUSSA GMBH
Reel/Frame 024006/0127 →