Patent Assignment
Reel/Frame 008498/0158
Assignment of Assignor's Interest
Recorded: 1997-03-24
Pages: 3
Assignor
WITTE, ANDREAS
Executed: 1997-03-21
Assignee
HORST WITTE ENTWICKLUNGS- UND VERTRIEBS-KG
IN DEN TANNEN 3, D-21369 NAHRENDORF, GERMANY
Covered Property
(1)
Use of Mixtures of Ethyl Lactate and N-Methyl Pyrollidone as an Edge Bead Remover for Photoresists
Patent:
5,814,433 →
Application:
08/833,170 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Apr 3, 1997
From: NELSON, WILLIAM C.; LEHAR, OCTAVIA
To: HOECHST CELANESE CORPORATION
Reel/Frame 008531/0502 →
Assignment of Assignor's Interest
Nov 6, 1997
From: HOECHST CELANESE CORPORATION
To: CLARIANT FINANCE (BVI) LIMITED
Reel/Frame 008829/0760 →
Assignment of Assignor's Interest
May 4, 2005
From: CLARIANT FINANCE (BVI) LIMITED
To: AZ ELECTRONIC MATERIALS USA CORP.
Reel/Frame 015972/0092 →
Assignment of Assignor's Interest
Jan 8, 2015
From: AZ ELECTRONIC MATERIALS USA CORP.
To: MERCK PATENT GMBH
Reel/Frame 034742/0206 →