IP Library › Assignment 022581/0666
Patent Assignment
Reel/Frame 022581/0666

Assignment of Assignor's Interest

Recorded: 2009-04-22 Pages: 3
Assignors
ENGELHARDT, FRIEDRICH
Executed: 2009-04-09
BREMER, CHRISTIAN
Executed: 2009-04-09
OBERMULLER, ANJA
Executed: 2009-04-09
CHRISTIAN, JOACHIM
Executed: 2009-04-09
Assignee
ALLESSA CHEMIE GMBH
ALT FECHENHEIM 34, FRANKFURT, 60386, GERMANY
Covered Property (1)
Stabilized Aqueous Polymer Compositions
Patent: 7,842,741 →
Application: 12/321,552 →
Publication: US 2009/0192055
Related Assignments (3)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name Apr 10, 2013
From: ALLESSACHEMIE GMBH
To: ALLESSA GMBH
Reel/Frame 030183/0522 →
Assignment of Assignor's Interest Aug 6, 2013
From: ALLESSA GMBH
To: TOUGAS OILFIELD SOLUTIONS GMBH
Reel/Frame 031040/0187 →
Assignment of Assignor's Interest Dec 14, 2025
From: TOUGAS OILFIELD SOLUTIONS GMBH
To: TOUGAS HOLDING GMBH
Reel/Frame 073210/0029 →