Granted Patent
Utility
US 5,640,710 · App. 08/561,863
Method for melt-decontaminating metal contaminated with radioactive substance
Inventors:
Hiroaki Kobayashi, Hiroshi Igarashi, Michiru Fujita
Patented Case
View Patent ↗
Granted: Jun 17, 1997
Filed: Nov 22, 1995
Inventors
Hiroaki Kobayashi
Hiroshi Igarashi
Michiru Fujita
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.