Granted Patent
Utility
US 4,360,447 · App. 06/129,315
Composition for liquid crystal color display elements
Inventors:
Ryoichi Morinaka, Ryoichi Tukahara, Tsutomu Nishizawa, Tuneo Hidaka
Patented Case
View Patent ↗
Granted: Nov 23, 1982
Filed: Mar 11, 1980
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.