Patent Assignment
Reel/Frame 006033/0602
Assignment of Assignors Interest.
Recorded: 1992-02-28
Pages: 4
Assignors
DORBATH, BERND
Executed: 1992-02-17
STARZ, KARL A.
Executed: 1992-02-17
VOELKER, WERNER
Executed: 1992-02-24
JERKE, WILAN
Executed: 1992-02-21
DORER, KAI
Executed: 1992-02-21
Assignee
DEGUSSA AKTIENGESELLSCHAFT A GERMAN CORP.
WEISSFRAUENSTRASSE 9, 6000 FRANKFURT AM MAIN 1, GERMANY
Covered Property
(1)
Purple Pigments, a Process for Their Production and Use Thereof
Patent:
5,252,522 →
Application:
07/843,255 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Apr 18, 2000
From: DEGUSSA AKTIENGESELLSCHAFT
To: DEGUSSA-HULS AKTIENGESELLSCHAFT
Reel/Frame 010719/0914 →
Merger
Jun 6, 2001
From: DEGUSSA-HULS AKTIENGESELLSCHAFT
To: DEGUSSA AG
Reel/Frame 011855/0608 →
Assignment of Assignor's Interest
Jun 25, 2001
From: DEGUSSA AKTIENGESELLSCHAFT
To: DMC2 DEGUSSA METALS
Reel/Frame 011923/0370 →
Nunc Pro Tunc Assignment
Nov 4, 2005
From: DMC^2 DEGUSSA METALS CATALYSTS CERDEC CORPORATION
To: FERRO GMBH
Reel/Frame 016722/0533 →