IP Library Assignment 005725/0580
Patent Assignment
Reel/Frame 005725/0580

Assignment of Assignors Interest.

Recorded: 1991-06-10 Pages: 3
Assignor
OSMAN, AKHTAR
Executed: 1991-03-19
Assignee
POLYSAR RUBBER CORPORATION
A CORPORATION OF CANADA, SARNIA, PROVINCE OF ONTARIO, CANADA
Covered Property (1)
Polyisobutylene Based Block Copolymers
Patent: 5,260,383 →
Application: 07/686,553 →
Related Assignments (1)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Feb 18, 2006
From: BAYER INC.
To: LANXESS INC.
Reel/Frame 017186/0200 →