Patent Assignment
Reel/Frame 006042/0747
Assignment of Assignors Interest.
Recorded: 1992-02-12
Pages: 3
Assignors
HELMREICH, BRIGITTE
Executed: 1991-12-11
BURGER, KLAUS
Executed: 1992-01-07
MAIER, GERHARD
Executed: 1991-12-11
HECHT, REINHOLD
Executed: 1991-12-11
NUYKEN, OSKAR
Executed: 1991-12-11
Assignee
HOECHST AKTIENGESELLSCHAFT A CORPORATION OF THE FEDERAL REPUBLIC OF GERMANY
D-6230 FRANKFURT AM MAIN 80, GERMANY
Covered Property
(1)
Heteroaromatic Polyether
Patent:
5,300,625 →
Application:
07/819,061 →
Related Assignments
(5)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Sep 24, 2001
From: HOECHST AKTIENGESELLSCHAFT
To: TICONA GMBH
Reel/Frame 012188/0305 →
Assignment of Assignor's Interest
Feb 7, 2006
From: TICONA GMBH
To: DEGUSSA AG
Reel/Frame 017125/0552 →
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 →