Patent Assignment
Reel/Frame 004367/0418
Assignment of Assignors Interest.
Recorded: 1985-02-28
Pages: 1
Assignor
ESTES, WILLIAM E.
Executed: 1984-01-13
Assignee
STAUFFER CHEMICAL COMPANY, A CORP OF DE
WESTPORT, CONNECTICUT
Covered Property
(1)
Method to Improve Yields of Sodium Hypophosphite
Patent:
4,521,391 →
Application:
06/570,477 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger
Nov 28, 1997
From: STAUFFER CHEMICAL COMPANY
To: RHONE-POULENC INC.
Reel/Frame 008848/0452 →
Assignment of Assignor's Interest
Feb 6, 1998
From: RHONE-POULENC INC.
To: RHODIA INC.
Reel/Frame 010404/0268 →
Invalid Recording. See Recording at Reel 010404, Frame 0268.
Feb 6, 1998
From: RHONE-POULENC INC.
To: RHODIA INC.
Reel/Frame 008955/0873 →