Granted Patent
Utility
US 5,993,690 · App. 09/000,409
Organosilicon compound, liquid crystal composition, and liquid-crystal display element
Inventors:
Tomoyuki Kondo, Shuichi Matsui, Norihisa Hachiya, Etsuo Nakagawa
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Jan 26, 1998
Inventors
Tomoyuki Kondo
Shuichi Matsui
Norihisa Hachiya
Etsuo Nakagawa
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.