Granted Patent
Utility
US 5,136,406 · App. 07/364,439
Plural layer liquid crystal display device for a high density display
Inventors:
Kazunori Kato, Yukiio Endo, Minoru Akatsuka, Masao Ohgawara, Kazutoshi Sawada
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Jun 6, 1989
Inventors
Kazunori Kato
Yukiio Endo
Minoru Akatsuka
Masao Ohgawara
Kazutoshi Sawada
Assignee (at issue)
ASAHI GLASS CO., LTD.
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.