Patent Assignment
Reel/Frame 003816/0068
Assignment of Assignors Interest.
Recorded: 1980-12-22
Pages: 1
Assignor
LESTON GERD
Executed: 1979-06-27
Assignee
KOPPERS COMPANY, INC.
KOPPERS BLDG., PITTSBURGH, PENNSYLVANIA, 15219
Covered Property
(1)
Process for Separating Para-Cresol from a Mixture of Methylated and Ethylated Phenols
Patent:
4,267,389 →
Application:
06/053,438 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Jun 23, 1986
From: KOPPERS COMPANY, INC. A CORP. OF DE.
To: NEVILLE-SYNTHESE ORGANICS, INC., A CORP. OF PA.
Reel/Frame 004571/0605 →
Assignment of Assignors Interest.
Feb 16, 1989
From: KOPPERS COMPANY, INC.
To: KOPPERS INDUSTRIES, INC., A CORP. OF PA
Reel/Frame 005126/0140 →
Security Interest
Feb 27, 1989
From: KOPPERS INDUSTRIES, INC.
To: KOPPERS AND MELLON BANK, N.A.
Reel/Frame 005026/0517 →
Assignment of Assignor's Interest
Feb 17, 1994
From: MELLON BANK, N.A.
To: KOPPERS INDUSTRIES, INC.
Reel/Frame 006875/0231 →