IP Library Granted Patent US 4,970,023
Granted Patent Utility
US 4,970,023 · App. 07/350,700

Biphenyl compounds, method of producing the same as well as liquid crystal compositions and light switch elements each containing the same

Inventors: Toshihiro Hirai, Atsushi Yoshizawa, Isa Nishiyama, Mitsuo Fukumasa, Nobuyuki Shiratori, Akihisa Yokoyama
Patented Case View Patent ↗
Granted: Nov 13, 1990 Filed: May 9, 1989
Inventors
Toshihiro Hirai
Atsushi Yoshizawa
Isa Nishiyama
Mitsuo Fukumasa
Nobuyuki Shiratori
Akihisa Yokoyama
Assignee (at issue)
Nippon Mining Company Limited

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Quick Facts
Patent No.
US 4,970,023
App. No.
07/350,700
Filed
1989-05-09
Granted
1990-11-13
Kind
A