Granted Patent
Utility
US 5,666,455 · App. 08/713,867
Waveguide device
Inventors:
Masahiro Aoki, Tatemi Ido, Takayuki Tsutsui, Kazuhisa Uomi, Tomonobu Tsuchiya, Makoto Okai, Atsushi Nakamura
Patented Case
View Patent ↗
Granted: Sep 9, 1997
Filed: Sep 13, 1996
Inventors
Masahiro Aoki
Tatemi Ido
Takayuki Tsutsui
Kazuhisa Uomi
Tomonobu Tsuchiya
Makoto Okai
Atsushi Nakamura
Assignee (at issue)
HITACHI, 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.