Granted Patent
Utility
US 4,473,486 · App. 06/405,267
Composition for liquid crystal color display elements
Inventors:
Ryoichi Morinaka, Ryoichi Tukahara, Tsutomu Nishizawa, Tuneo Hidaka
Patented Case
View Patent ↗
Granted: Sep 25, 1984
Filed: Aug 4, 1982
Inventors
Ryoichi Morinaka
Ryoichi Tukahara
Tsutomu Nishizawa
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.