Granted Patent
Utility
US 4,555,355 · App. 06/552,302
Composition for liquid crystal color display
Inventors:
Yasuyuki Yamada, Tadaaki Tanaka, Ryoichi Tukahara, Tsutomu Nishizawa
Patented Case
View Patent ↗
Granted: Nov 26, 1985
Filed: Nov 22, 1983
Inventors
Yasuyuki Yamada
Tadaaki Tanaka
Ryoichi Tukahara
Tsutomu Nishizawa
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.