Patent Assignment
Reel/Frame 009417/0550
Assignment of Assignor's Interest
Recorded: 1998-08-27
Pages: 2
Assignee
SHELL OIL COMPANY
P.O. BOX 2463, 900 LOUISIANA, HOUSTON, TEXAS, 77252
Covered Property
(1)
Catalyst Removal System
Patent:
5,840,260 →
Application:
08/741,502 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
May 8, 2002
From: SHELL OIL COMPANY
To: CAT TECH INC.
Reel/Frame 012691/0441 →
Conversion from Texas Corporation to Texas Llc
Dec 29, 2009
From: CAT TECH INC.
To: CAT TECH LLC
Reel/Frame 023708/0374 →
Conversion from Texas Llc to Delaware Llc and Change of Name
Dec 29, 2009
From: CAT TECH LLC
To: CLEAN HARBORS CATALYST TECHNOLOGIES, LLC
Reel/Frame 023708/0383 →