Granted Patent
Utility
US 6,246,499 · App. 08/890,626
Optical signal communication apparatus and optical signal communication method
Inventors:
Yoshiyuki Kunito, Hideki Yoshida, Tatsuo Inoue, Yoichi Toriumi, Michihiko Sakurai
Patented Case
View Patent ↗
Granted: Jun 12, 2001
Filed: Jul 9, 1997
Inventors
Yoshiyuki Kunito
Hideki Yoshida
Tatsuo Inoue
Yoichi Toriumi
Michihiko Sakurai
Assignee (at issue)
SONY GROUP 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.