Patent Assignment
Reel/Frame 003793/0293
Assignment of Assignors Interest.
Recorded: 1980-08-26
Pages: 2
Assignee
GAF CORPORATION, A CORP. OF DE
140 WEST 51ST ST., NEW YORK,, NEW YORK
Covered Property
(1)
Process for Increasing Molecular Weight of Polybutylene Terephthalate
Patent:
4,246,377 →
Application:
06/086,337 →
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Nov 24, 1986
From: GAF CORPORATION, A DE. CORP.
To: CELANESE ENGINEERING RESINS, INC.,
Reel/Frame 004640/0058 →
Assignment of Assignors Interest.
Nov 19, 1987
From: CELANESE ENGINEERING RESINS, INC.
To: HOECHST CELANESE CORPORATION (HCC), A CORP. OF DE.
Reel/Frame 004827/0361 →