Patent Assignment
Reel/Frame 005211/0184
Rerecord to Correct Filing Date in Previously Recorded Assignment at Reel 5071 Frame 793.
Recorded: 1989-11-24
Pages: 2
Assignor
WISMER, JOHN A.
Executed: 1989-11-13
Assignee
PENNWALT CORPORATION
THREE PARKWAY, A CORP. OF PA., PHILADELPHIA, PENNSYLVANIA, 19102
Covered Property
(1)
Process for the Separation of Hydrogen Fluoride, 1,1-Dichloro-1- Fluoroethane and 1-Chloro-1,1-Difluoroethane from Liquid Mixtures Thereof
Patent:
4,975,156 →
Application:
07/347,606 →
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
May 4, 1989
From: WISMER, JOHN A.
To: PENNWALT CORPORATION, A PA CORP.
Reel/Frame 005071/0793 →
Merger Effective on 12/29/1989PA
May 15, 1990
From: ATOCHEM INC., M&T CHEMICALS INC., AND PENWALT CORPORATION MERGED AND CHANGES NAME
To: ATOCHEM NORTH AMERICA, INC.
Reel/Frame 005368/0602 →