Granted Patent
Utility
US 5,861,108 · App. 08/673,093
Naphthalene compound, and liquid crystal composition and liquid crystal element using the same
Inventors:
Tsutomu Ishida, Atsuo Otsuji, Yoshiyuki Totani, Motokazu Hirao, Hiroe Kayashima, Masakatsu Nakatsuka
Patented Case
View Patent ↗
Granted: Jan 19, 1999
Filed: Jul 1, 1996
Inventors
Tsutomu Ishida
Atsuo Otsuji
Yoshiyuki Totani
Motokazu Hirao
Hiroe Kayashima
Masakatsu Nakatsuka
Assignee (at issue)
MITSUI CHEMICALS, INC.
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.