Patent Assignment
Reel/Frame 004006/0017
Assignment of Assignors Interest.
Recorded: 1982-04-26
Pages: 1
Assignor
LESTON, GERD
Executed: 1982-04-08
Assignee
KOPPERS COMPANY, INC.
KOPPERS BLDG., A CORP OF DE, PITTSBURGH, PENNSYLVANIA, 15219
Covered Property
(1)
Process for Separating Isopropylated M-Cresols
Patent:
4,429,169 →
Application:
06/372,055 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Interest
Dec 16, 1988
From: ISC ACQUISTION COMPANY
To: ALGEMENE BANK NEDERLAND N.V., HOUSTON AGENCY
Reel/Frame 004994/0188 →
Assignment of Assignors Interest.
Jan 23, 1989
From: KOPPERS COMPANY, INC.,
To: ISC ACQUISITION COMPANY, A CORP. OF DE.
Reel/Frame 005009/0188 →
Change of Name January 17, 1989, Delaware
Jul 31, 1989
From: ISC ACQUISITION COMPANY
To: INDSPEC CHEMICAL CORPORATION
Reel/Frame 005138/0231 →