Patent Assignment
Reel/Frame 005211/0182
Re-Record to Correct Filing Date of a Previously Recorded Assignment at Reel 5068 Frame 952
Recorded: 1989-11-24
Pages: 2
Assignor
WISMER, JOHN A.
Executed: 1989-05-01
Assignee
PENNWALT CORPORATION
THREE PARKWAY, A PA CORP., PHILADELPHIA, PENNSYLVANIA, 19102
Covered Property
(1)
Process for the Separation of 1,1-Dichloro-1-Fluoroethane and 1,1,1,3,3-Pentafluorobutane
Patent:
4,950,364 →
Application:
07/347,603 →
Related Assignments
(3)
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 CORP. OF PA.
Reel/Frame 005068/0952 →
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 →
Merger and Change of Name Effective on December 31, 1989, in Pennsylvania
Sep 17, 1990
From: ATOCHEM INC., A DE CORP. (MERGED INTO); M&T CHEMICALS INC., A DE CORP. (MERGED INTO); PENNWALT CORPORATION, A PA CORP. (CHANGED TO)
To: ATOCHEM NORTH AMERICA, INC., A PA CORP.
Reel/Frame 005496/0003 →