Patent Assignment
Reel/Frame 003816/0070
Assignment of Assignors Interest.
Recorded: 1980-12-22
Pages: 1
Assignor
LESTON GERD
Executed: 1979-06-26
Assignee
KOPPERS COMPANY, INC.
KOPPERS BLDG., PITTSBURGH, PENNSYLVANIA, 15219
Covered Property
(1)
Process for Obtaining Para-Cresol and Meta-Cresol from a Mixture of Methylated and Ethylated Phenols Characterized by Urea Clathration of Metal Cresol
Patent:
4,267,391 →
Application:
06/053,531 →
Related Assignments
(6)
Other recorded transfers of the patent in this record — the chain of ownership.
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 →
Lien on Patents and Pending Applications Therefor.
Feb 17, 1994
From: KOPPERS INDUSTRIES, INC.
To: MELLON BANK, N.A.
Reel/Frame 006875/0219 →
Assignment of Assignor's Interest
Feb 17, 1994
From: MELLON BANK, N.A.
To: KOPPERS INDUSTRIES, INC.
Reel/Frame 006875/0231 →
Security Interest
Mar 27, 1996
From: KOPPERS INDUSTRIES, INC.
To: MELLON BANK, N.A.
Reel/Frame 007863/0001 →
Security Agreement
Jan 14, 1998
From: KOPPERS INDUSTRIES, INC.
To: MELLON BANK, N.A.
Reel/Frame 008869/0926 →