Granted Patent
Utility
US 6,498,901 · App. 09/955,145
Flash photography system
Inventors:
Masahiro Kawasaki, Osamu Sato, Shigeru Iwamoto, Tadahisa Ohkura, Kazuhito Taneoka
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: Sep 19, 2001
Inventors
Masahiro Kawasaki
Osamu Sato
Shigeru Iwamoto
Tadahisa Ohkura
Kazuhito Taneoka
Assignee (at issue)
Pentax 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.