IP Library › Granted Patent US 4,801,406
Granted Patent Utility
US 4,801,406 · App. 07/023,593

Dicyanobenzanthrone compounds

Inventor: Hansrudolf Schwander
Patented Case View Patent ↗
Granted: Jan 31, 1989 Filed: Mar 9, 1987
Inventor
Hansrudolf Schwander
Assignee (at issue)
Ciba-Geigy

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Quick Facts
Patent No.
US 4,801,406
App. No.
07/023,593
Filed
1987-03-09
Granted
1989-01-31
Kind
A