IP Library › Granted Patent US 4,851,085
Granted Patent Utility
US 4,851,085 · App. 07/217,511

Purification of butyrolactone

Inventor: Waldo De Thomas
Patented Case View Patent ↗
Granted: Jul 25, 1989 Filed: Jul 11, 1988
Inventor
Waldo De Thomas
Assignee (at issue)
GAF Corporation

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Quick Facts
Patent No.
US 4,851,085
App. No.
07/217,511
Filed
1988-07-11
Granted
1989-07-25
Kind
A