Granted Patent
Utility
US 4,536,320 · App. 06/538,823
Nematic liquid crystalline composition
Inventors:
Tsutomu Nishizawa, Ryoichi Tukahara, Ryoichi Morinaka, Tuneo Hidaka
Patented Case
View Patent ↗
Granted: Aug 20, 1985
Filed: Oct 5, 1983
Inventors
Tsutomu Nishizawa
Ryoichi Tukahara
Ryoichi Morinaka
Tuneo Hidaka
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.