IP Library › Assignment 025979/0372
Patent Assignment
Reel/Frame 025979/0372

Assignment of Assignor's Interest

Recorded: 2011-03-18 Pages: 2
Assignors
DUECKER, BARBARA
Executed: 2007-12-11
WESSLING, MICHAEL
Executed: 2007-12-13
NITSCHKE, NICOLE
Executed: 2007-12-19
Assignee
CLARIANT PRODUKTE (DEUTSCHLAND) GMBH
BRUENINGSTRASSE 50, GROUP INTELLECTUAL PROPERTY, 65929 FRANKFURT AM MAIN, 65929, GERMANY
Covered Property (1)
Method for Producing N,N-Bis(Pyridin-2YLMETHYL)-1,1-Bis(Pyridin-2-Yl)-1-Aminoalkane Compounds and Metal Complex Salts Containing These Compounds
Patent: 7,977,487 →
Application: 11/921,551 →
Publication: US 2009/0221831
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Aug 20, 2014
From: CLARIANT PRODUKTE (DEUTSCHLAND) GMBH)
To: WEYLCHEM SWITZERLAND AG
Reel/Frame 033597/0431 →
Assignment of Assignor's Interest Mar 13, 2015
From: WEYLCHEM SWITZERLAND AG
To: WEYLCHEM WIESBADEN GMBH
Reel/Frame 035235/0891 →