Granted Patent
Utility
US 6,644,832 · App. 10/021,003
Illumination device and manufacturing method therefor, display device, and electronic instrument
Inventors:
Shohei Yoshida, Hidehito Iisaka, Hidefumi Sakata, Tetsuhiko Takeuchi
Patented Case
View Patent ↗
Granted: Nov 11, 2003
Filed: Dec 19, 2001
Inventors
Shohei Yoshida
Hidehito Iisaka
Hidefumi Sakata
Tetsuhiko Takeuchi
Assignee (at issue)
SEIKO EPSON 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.