Granted Patent
Utility
US 6,229,162 · App. 09/294,085
Planar-type avalanche photodiode
Inventor:
Isao Watanabe
Patented Case
View Patent ↗
Granted: May 8, 2001
Filed: Apr 19, 1999
Inventor
Isao Watanabe
Assignee (at issue)
NEC 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.