Patent Assignment
Reel/Frame 004198/0096
Assignment of Assignors Interest.
Recorded: 1983-12-08
Pages: 1
Assignor
HOLTER, SAMUEL N.
Executed: 1983-01-25
Assignee
KOPPERS COMPANY, INC., A CORP OF
KOPPERS BUILDING,, PITTSBURGH, PENNSYLVANIA, 15219
Covered Property
(1)
Process for Recovering a Crystallization Medium
Patent:
4,433,181 →
Application:
06/343,537 →
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
Sep 25, 1989
From: ISC ACQUISITION COMPANY
To: INDSPEC CHEMICAL CORPORATION
Reel/Frame 005142/0420 →