IP Library › Assignment 008747/0895
Patent Assignment
Reel/Frame 008747/0895

Assignment of Assignor's Interest

Recorded: 1997-07-17 Pages: 2
Assignors
SEITZ, THOMAS
Executed: 1997-04-30
HABER, STEFFEN
Executed: 1997-05-20
KLEINER, HANS-JERG
Executed: 1997-05-20
Assignee
HOECHST AG
FRANKFURT AM MAIN, D-659, GERMANY
Covered Property (1)
Process for Preparing Tertiary Phosphines Containing Phosphinate or Phosphonate Groups, and Novel Tertiary Phosphines Containing Phosphinate Groups
Patent: 5,801,263 →
Application: 08/857,755 →
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Jun 15, 2000
From: AVENTIS RESEARCH & TECHNOLOGIES GMBH & CO. KG
To: CELANESE GMBH
Reel/Frame 010901/0246 →
Assignment of Assignor's Interest Jun 15, 2000
From: HOECHST AKTIENGESELLSCHAFT
To: AVENTIS RESEARCH & TECHNOLOGY GMBH & CO. KG
Reel/Frame 010901/0425 →