IP Library Assignment 004971/0435
Patent Assignment
Reel/Frame 004971/0435

Assignment of Assignors Interest.

Recorded: 1988-11-28 Pages: 1
Assignors
SHARIFIAN, HOSSEIN
Executed: 1988-11-21
TANNER, ALAN R.
Executed: 1988-11-21
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.
Change of Name Effective on 03/11/1991 May 1, 1992
From: SOUTHWESTERN ANALYTICAL CHEMICALS, INC., A CORPORATION OF TX
To: SACHEM, INC.
Reel/Frame 006101/0177 →