IP Library Granted Patent US 4,840,640
Granted Patent Utility
US 4,840,640 · App. 07/062,881

Polarizing film: polymer film base containing substituted anthraquinone dichroic dye

Inventors: Konoe Miura, Tetsuo Ozawa, Seigo Okumura, Hidetoshi Urashima
Patented Case View Patent ↗
Granted: Jun 20, 1989 Filed: Jun 16, 1987
Inventors
Konoe Miura
Tetsuo Ozawa
Seigo Okumura
Hidetoshi Urashima
Assignee (at issue)
Mitsubishi Chemical Industries, Ltd.

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Quick Facts
Patent No.
US 4,840,640
App. No.
07/062,881
Filed
1987-06-16
Granted
1989-06-20
Kind
A