Granted Patent
Utility
US 5,171,447 · App. 07/729,412
Method of extracting and separating spent solvent generated in nuclear fuel cycle
Inventors:
Isao Kondoh, Takashi Okada
Patented Case
View Patent ↗
Granted: Dec 15, 1992
Filed: Jul 12, 1991
Inventors
Isao Kondoh
Takashi Okada
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.