IP Library Assignment 019766/0761
Patent Assignment
Reel/Frame 019766/0761

Assignment of Assignor's Interest

Recorded: 2007-08-30 Pages: 5
Assignors
GUCKEL, CHRISTIAN
Executed: 2007-05-29
DIALER, HARALD
Executed: 2007-05-29
ESTENFELDER, MARVIN
Executed: 2007-07-05
PITSCHI, WERNER
Executed: 2007-06-20
Assignee
SUD-CHEMIE AG
LENBACHPLATZ 6, MUNCHEN, D-80333, GERMANY
Covered Property (1)
Use of a Multi-Layer Catalyst for Producing Phthalic Anhydride
Patent: 7,615,513 →
Application: 11/817,428 →
Publication: US 2008/0154048
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Aug 27, 2012
From: SUED-CHEMIE AG
To: SUED-CHEMIE IP GMBH & CO. KG
Reel/Frame 028849/0765 →
Nunc Pro Tunc Assignment Jan 27, 2021
From: SUED-CHEMIE IP GMBH & CO. KG
To: CLARIANT INTERNATIONAL LTD.
Reel/Frame 055050/0928 →