IP Library › Granted Patent US 4,843,150
Granted Patent Utility
US 4,843,150 · App. 07/071,644

Pyrazolone or pyridone type water soluble disazo colorant containing one or two triazine rings

Inventors: Toshio Hihara, Yukiharu Shimizu, Kanzi Shimizu
Patented Case View Patent ↗
Granted: Jun 27, 1989 Filed: Jul 9, 1987
Inventors
Toshio Hihara
Yukiharu Shimizu
Kanzi Shimizu
Assignee (at issue)
Mitsubushi Chemical Industries Limited

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Quick Facts
Patent No.
US 4,843,150
App. No.
07/071,644
Filed
1987-07-09
Granted
1989-06-27
Kind
A