Granted Patent
Utility
US 5,516,949 · App. 08/029,602
Difluoroethylene compounds and liquid crystal compositions containing them
Inventors:
Seiji Shinya, Osamu Yokokouji, Takashi Miyajima, Hidemasa Koh, Katsutoshi Machida
Patented Case
View Patent ↗
Granted: May 14, 1996
Filed: Mar 11, 1993
Inventors
Seiji Shinya
Osamu Yokokouji
Takashi Miyajima
Hidemasa Koh
Katsutoshi Machida
Assignees (at issue)
ASAHI GLASS CO., LTD.
Seimi Chemical Co., Ltd.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.