Granted Patent
Utility
US 5,093,302 · App. 07/631,998
Radioactive catalyst and oxidation-reduction method and apparatus using same
Inventors:
Nobuyuki Sasao, Yukio Wada
Patented Case
View Patent ↗
Granted: Mar 3, 1992
Filed: Dec 21, 1990
Inventors
Nobuyuki Sasao
Yukio Wada
Assignee (at issue)
Doryokuro Kakunenryo Kaihatsu Jigyodan
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.