Granted Patent
Utility
US 5,725,798 · App. 08/438,036
Carboxylate compounds, liquid crystal materials liquid crystal compositions and liquid crystal elements
Inventors:
Yuuichirou Tatsuki, Shinichi Nishiyama, Junichi Kawabata, Tooru Yamanaka, Chiho Tanaka
Patented Case
View Patent ↗
Granted: Mar 10, 1998
Filed: May 8, 1995
Inventors
Yuuichirou Tatsuki
Shinichi Nishiyama
Junichi Kawabata
Tooru Yamanaka
Chiho Tanaka
Assignee (at issue)
Mitsui Petrochemical Industries, 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.