Granted Patent
Utility
US 6,809,391 · App. 09/638,194
Short-wavelength photodiode of enhanced sensitivity with low leak current and method of manufacturing photodiode
Inventor:
Sumio Koiwa
Patented Case
View Patent ↗
Granted: Oct 26, 2004
Filed: Aug 11, 2000
Inventor
Sumio Koiwa
Assignee (at issue)
SEIKO INSTRUMENTS INC.
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.