IP Library › Assignment 004789/0068

Patent Assignment

Reel/Frame 004789/0068

Assignment of Assignors Interest.

Recorded: 1987-08-20 Pages: 2

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Assignors

ERDMANN, FRITZ

Executed: 1987-08-13

THAMM, HORST-DIETER

Executed: 1987-08-13

STAUDT, HANS-JOACHIM

Executed: 1987-08-13

Assignee

HOECHST AKTIENGESELLSCHAFT, FRANKFURT/MAIN, FEDERAL REPUBLIC OF GERMANY, A CORP. OF FEDERAL REPUBLIC OF GERMANY

DELAWARE

Covered Property (1)

Process for the Preparation of an O-Naphthoquinonediazide Sulfonic Acid Ester and Photosensitive Mixture Containing Same

Patent: 4,873,169 →

Application: 07/087,599 →

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 →