Patent Assignment
Reel/Frame 006084/0960
Assignment of Assignors Interest.
Recorded: 1992-04-01
Pages: 3
Assignors
ZAHN, WOLFGANG
Executed: 1992-03-19
MERREM, HANS-JOACHIM
Executed: 1992-03-19
ERDMANN, FRITZ
Executed: 1992-03-23
SCHMITT, AXEL
Executed: 1992-03-23
Assignee
HOECHST AKTIENGESELLSCHAFT
A CORPORATION OF FED. REP. OF GERMANY, FRANKFURT/MAIN, GERMANY
Covered Property
(1)
Radiation-Sensitive Composition Containing Esterification Product of (1,2-Naphthoquinone-2-Diazide)-Sulfonic Acid with 2,3,4,4-Tetrahydroxy Benzophenone and a Di- or Tri-Hydroxybenzophenone
Patent:
5,358,823 →
Application:
07/863,681 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Nov 19, 1999
From: HOECHST AKTIENGESELLSCHAFT
To: CLARIANT GMBH
Reel/Frame 010351/0823 →
Assignment of Assignor's Interest
Dec 9, 2005
From: CLARIANT GMBH
To: CLARIANT AZ (DEUTSCHLAND) AKTIENGESELLSCHAFT
Reel/Frame 017105/0233 →
Change of Name
Dec 9, 2005
From: CLARIANT AZ (DEUTSCHLAND) AKTIENGESSELLSCHAFT
To: AZ ELECTRONIC MATERIALS (GERMANY) GMBH
Reel/Frame 017105/0279 →