Granted Patent
Utility
US 6,458,433 · App. 09/331,058
Difluorophenyl derivatives, liquid-crystal compounds, and liquid-crystal composition
Inventors:
Takashi Kato, Shuichi Matsui, Kazutoshi Miyazawa, Fusayuki Takeshita, Etsuo Nakagawa
Patented Case
View Patent ↗
Granted: Oct 1, 2002
Filed: Jun 16, 1999
Inventors
Takashi Kato
Shuichi Matsui
Kazutoshi Miyazawa
Fusayuki Takeshita
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.