Granted Patent
Utility
US 6,822,271 · App. 09/485,852
Semiconductor photodetector and optical transmitting device
Inventors:
Toshiyuki Mogi, Kazumi Kawamoto, Shinji Tsuji, Hitoshi Nakamura, Masato Shishikura, Satoru Kikuchi
Patented Case
View Patent ↗
Granted: Nov 23, 2004
Filed: Feb 17, 2000
Inventors
Toshiyuki Mogi
Kazumi Kawamoto
Shinji Tsuji
Hitoshi Nakamura
Masato Shishikura
Satoru Kikuchi
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.