Patent Assignment
Reel/Frame 003906/0320
Assignment of Assignors Interest.
Recorded: 1981-05-04
Pages: 1
Assignors
AIKEN, JOHN E.
Executed: 1980-11-25
DIDYCZ, WILLIAM J.
Executed: 1980-11-25
GLASSMAN, DONALD
Executed: 1980-11-25
Assignee
UNITED STATES STEEL CORPORATION
PITTSBURGH, PENNSYLVANIA
Covered Property
(1)
Waste Gas Purification Reactor and Method
Patent:
4,410,499 →
Application:
06/260,499 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Dec 12, 1986
From: USX CORPORATION; USX CORPORATION
To: ARISTECH CHEMICAL CORPORATION
Reel/Frame 004681/0925 →
Security Interest
May 4, 1990
From: ARISTECH CHEMICAL CORPORATION
To: MITSUBISHI BANK LIMITED, THE, NEW YORK BRANCH, AS AGENT
Reel/Frame 005294/0818 →
Assignment of Assignor's Interest
Mar 25, 1996
From: ARISTECH CHEMICAL CORPORATION
To: ASHLAND INC.
Reel/Frame 007863/0208 →