Patent Assignment
Reel/Frame 004971/0435
Assignment of Assignors Interest.
Recorded: 1988-11-28
Pages: 1
Assignee
SOUTHWESTERN ANALYTICAL CHEMICALS, INC.
821 EAST WOODWARD, A CORP. OF TX, AUSTIN, TEXAS, 78704
Covered Property
(1)
Method for Purifying Quaternary Ammonium Hydroxides
Patent:
4,938,854 →
Application:
07/276,615 →
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.