Patent Assignment
Reel/Frame 019603/0241
Assignment of Assignor's Interest
Recorded: 2007-07-24
Pages: 4
Assignee
CEPHALON, INC.
41 MOORES ROAD, PO BOX 4011, FRAZER, PENNSYLVANIA, 19355
Covered Property
(1)
Solvent Extraction Process for Preparing Purified Phosphoric Acid and Sodium Phosphate Salts
Patent:
4,285,920 →
Application:
06/092,598 →
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 →