Granted Patent
Utility
US 6,190,576 · App. 09/155,595
Liquid crystal compounds, liquid crystal compostions containing the compounds, and liquid crystal display devices made by using the compositions
Inventors:
Tugumiti Andou, Shuichi Matsui, Kazutoshi Miyazawa, Hiroyuki Takeuchi, Yasuyuki Koizumi, Yasuko Sekiguchi, Etsuo Nakagawa, Fusayuki Takeshita
Patented Case
View Patent ↗
Granted: Feb 20, 2001
Filed: Sep 30, 1998
Inventors
Tugumiti Andou
Shuichi Matsui
Kazutoshi Miyazawa
Hiroyuki Takeuchi
Yasuyuki Koizumi
Yasuko Sekiguchi
Etsuo Nakagawa
Fusayuki Takeshita
Assignee (at issue)
Chisso Corporation
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.