Granted Patent
Utility
US 6,610,216 · App. 10/013,463
OPTICALLY ACTIVE COMPOUND, PHOTOREACTIVE CHIRAL AGENT, LIQUID CRYSTAL COMPOSITION, METHOD FOR CHANGING HELICAL STRUCTURE OF LIQUID CRYSTAL, METHOD FOR FIXING HELICAL STRUCTURE OF LIQUID CRYSTAL, LIQUID CRYSTAL COLOR FILTER, OPTICAL FILM, AND RECORDING MEDIUM
Inventors:
Masatoshi Yumoto, Keiichiro Hayashi, Mitsuyoshi Ichihashi
Patented Case
View Patent ↗
Granted: Aug 26, 2003
Filed: Dec 13, 2001
Inventors
Masatoshi Yumoto
Keiichiro Hayashi
Mitsuyoshi Ichihashi
Assignee (at issue)
Fujitsu Limited
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.