IP Library › Granted Patent US 5,116,996
Granted Patent Utility
US 5,116,996 · App. 07/731,657

Purification of indigo

Inventors: Reinhold Kohlhaupt, Walter Bieg, Ernst Lang
Patented Case View Patent ↗
Granted: May 26, 1992 Filed: Jul 17, 1991
Inventors
Reinhold Kohlhaupt
Walter Bieg
Ernst Lang
Assignee (at issue)
BASF SE

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Quick Facts
Patent No.
US 5,116,996
App. No.
07/731,657
Filed
1991-07-17
Granted
1992-05-26
Kind
A