IP Library › Granted Patent US 5,256,187
Granted Patent Utility
US 5,256,187 · App. 07/975,062

Separation of precious metals by an ion exchange process

Inventor: David L. Gefvert
Patented Case View Patent ↗
Granted: Oct 26, 1993 Filed: Nov 12, 1992
Inventor
David L. Gefvert
Assignee (at issue)
Sherex Chemical Co., Inc.

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Quick Facts
Patent No.
US 5,256,187
App. No.
07/975,062
Filed
1992-11-12
Granted
1993-10-26
Kind
A