Patent Assignment
Reel/Frame 012856/0871
Assignment of Assignor's Interest
Recorded: 2002-05-01
Pages: 3
Assignors
SMALL, TERRENCE P.
Executed: 2002-04-23
ROE, DONALD C.
Executed: 2002-04-24
WENDEL, WILLIAM
Executed: 2002-04-23
Assignee
BETZDEARBORN, INC.
P.O. BOX 3002, 4636 SOMERTON ROAD, TREVOSE, PENNSYLVANIA, 19053
Covered Property
(1)
Dewatering Sand with Surfactants
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.