Granted Patent
Utility
US 6,040,890 · App. 09/101,021
Electric optical liquid crystal system
Inventors:
Shinichi Sawada, Shizuo Murata, Toyoshiro Isoyama
Patented Case
View Patent ↗
Granted: Mar 21, 2000
Filed: Jun 29, 1998
Inventors
Shinichi Sawada
Shizuo Murata
Toyoshiro Isoyama
Assignee (at issue)
Chisso Corporation
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.