Patent Assignment
Reel/Frame 004320/0351
Assignment of Assignors Interest.
Recorded: 1984-09-27
Pages: 1
Assignor
RAFF, DONALD K.
Executed: 1984-09-21
Assignee
WESTVACO CORPORATION, A DE CORP.
299 PARK AVE., NEW YORK, NEW YORK, 10171
Covered Property
(1)
Deresination Method of Wood Pulp
Patent:
4,673,460 →
Application:
06/654,865 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Aug 27, 1985
From: WESTVACO CORPORATION
To: STEPAN COMPANY, NORTHFIELD, ILLINOIS 60093, A CORP OF DE
Reel/Frame 004446/0247 →
Assignment of Assignors Interest.
Apr 23, 1990
From: STEPAN COMPANY
To: EXXON CHEMICAL PATENTS, INC., A CORP. OF DELAWARE
Reel/Frame 005278/0957 →
Assignment of Assignor's Interest
Dec 21, 1995
From: EXXON CHEMICAL PATENTS, INC,
To: CALLAWAY CHEMICAL COMPANY
Reel/Frame 007744/0783 →