Patent Assignment
Reel/Frame 004793/0018
Assignment of Assignors Interest.
Recorded: 1987-09-17
Pages: 1
Assignor
WALTON, WILLIAM B.
Executed: 1987-08-10
Covered Property
(1)
Method for Removal of Paraffin from Producing Oil Wells
Patent:
4,813,482 →
Application:
07/098,425 →
Related Assignments
(8)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Interest
Jun 14, 1989
From: DORSET INC. A CORP OF DELAWARE
To: CHASE MANHATTAN BANK, THE NATIONAL ASSOCIATION
Reel/Frame 005122/0370 →
Change of Name Effective on 04/11/1989
Oct 30, 1989
From: DORSET INC.
To: GAF CHEMICALS CORPORATION
Reel/Frame 005251/0071 →
Assignment of Assignors Interest.
Apr 6, 1990
From: GAF CHEMICALS CORPORATION
To: RHONE-POULENC SPECIALTY CHEMICALS, L.P.
Reel/Frame 005315/0588 →
Change of Name Effective April 10, 1989
Oct 30, 1990
From: GAF CORPORATION, A DE CORP.
To: DORSET INC., A DE CORP.
Reel/Frame 005250/0940 →
Released by Secured Party
Jan 22, 1991
From: CHASE MANHATTAN BANK, THE,
To: DORSET INC.,
Reel/Frame 005597/0269 →
A Corrective Assignment to Correct the Single Serial Number 07194,259 Identified in Previously Recorded Assigment on Reel 5315/Frame 589. This Corrective Assigment Shows That There Should Have Been a Schedule Attached.
May 30, 1991
From: GAF CHEMICALS CORPORATION
To: RHONE - POULENC SPECIALITY CHEMICALS
Reel/Frame 005722/0439 →
Change of Name Effective on 05/03/1990
Jun 24, 1991
From: RHONE-POULENC SPECIALTY CHEMICALS INC.
To: RHONE-POULENC SURFACTANTS AND SPECIALTIES INC.
Reel/Frame 005748/0167 →
Change of Name
Jun 24, 1991
From: RHONE-POULENC SPECIALTY CHEMICALS, L.P.
To: RHONE-POULENC SURFACTANTS AND SPECIALTIES, L.P.
Reel/Frame 005753/0422 →