Patent Assignment
Reel/Frame 012515/0736
Assignment of Assignor's Interest
Recorded: 2002-01-16
Pages: 4
Assignors
PEREZ, LIBARDO A.
Executed: 2001-10-01
ROE, DONALD C.
Executed: 2001-10-01
POLIZZOTTI, DAVID M.
Executed: 2001-10-01
Assignee
BETZDEARBORN INC.
4636 SOMERTON ROAD, TREVOSE, PENNSYLVANIA, 19053
Covered Property
(1)
Magnetic separation of ores using sulfonated polymers
Application:
09/969,214 →
Publication:
US 2003/0066787
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.