IP Library › Granted Patent US 4,988,489
Granted Patent Utility
US 4,988,489 · App. 07/302,156

Recovery of phosphorus values from waste phosphoric acid liquors

Inventors: Lanny E. Todd, Alec F. Bridges
Patented Case View Patent ↗
Granted: Jan 29, 1991 Filed: Jan 25, 1989
Inventors
Lanny E. Todd
Alec F. Bridges

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Quick Facts
Patent No.
US 4,988,489
App. No.
07/302,156
Filed
1989-01-25
Granted
1991-01-29
Kind
A