IP Library › Assignment 015122/0851
Patent Assignment
Reel/Frame 015122/0851

Assignment of Assignor's Interest

Recorded: 2004-03-19 Pages: 2
Assignors
LAPPE, PETER
Executed: 2004-03-10
SPRINGER, HELMUT
Executed: 2004-03-10
Assignee
CELANESE CHEMICALS EUROPE
FRANKFURTER STRASSE 111, D-61476 KRONBERG, GERMANY
Covered Property (1)
Process for Preparing N-Methyldialkylamines from Secondary Dialkylamines and Formaldehyde
Patent: 6,982,352 →
Application: 10/804,747 →
Publication: US 2004/0204611
Related Assignments (3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Mar 27, 2007
From: CELANESE CHEMICALS EUROPE GMBH; CELANESE GMBH; HOECHST AG; CLARIANT GMBH
To: DRACHENFELSSEE 521. VV GMBH (TO BE RENAMED OXEA DEUTSCHLAND GMBH)
Reel/Frame 019069/0199 →
Change of Name Mar 31, 2008
From: DRACHENFELSSEE 521. V V GMBH
To: OXEA DEUTSCHLAND GMBH
Reel/Frame 022703/0784 →
Change of Name Apr 1, 2008
From: OXEA DEUTSCHLAND GMBH
To: OXEA GMBH
Reel/Frame 022856/0130 →