Patent Assignment
Reel/Frame 012740/0709
Assignment of Assignor's Interest
Recorded: 2002-03-11
Pages: 2
Assignors
TILLACK, JORG
Executed: 2002-01-21
SCHMALSTIEG, LUTZ
Executed: 2002-01-22
PUETZ, WOLFGANG
Executed: 2002-01-21
RUTTMANN, GERHARD
Executed: 2002-01-21
Assignee
BAYER AKTIENGESELLSCHAFT
D 51368 LEVERKUSEN, GERMANY
Covered Property
(1)
Polyamines Comprising Urea Groups, Method for Their Production, and Their Use as Hardeners for Epoxide Resins
Patent:
7,001,972 →
Application:
10/048,329 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Mar 9, 2016
From: BAYER AG
To: BAYER MATERIALSCIENCE AG
Reel/Frame 038044/0799 →
Change of Name
Mar 22, 2016
From: BAYER MATERIALSCIENCE AG
To: COVESTRO DEUTSCHLAND AG
Reel/Frame 038399/0358 →
Change of Name
Apr 6, 2016
From: BAYER MATERIALSCIENCE AG
To: COVESTRO DEUTSCHLAND AG
Reel/Frame 038365/0392 →