Granted Patent
Utility
US 4,769,180 · App. 07/032,588
Process for separately recovering uranium and hydrofluoric acid from waste liquor containing uranium and fluorine
Inventors:
Yoshiaki Echigo, Hirotaka Amimoto, Mutsunori Yamao, Tadashi Ishikura, Keiichiro Otomura, Sakae Fujisaki, Yoshikazu Ogura
Patented Case
View Patent ↗
Granted: Sep 6, 1988
Filed: Apr 1, 1987
Inventors
Yoshiaki Echigo
Hirotaka Amimoto
Mutsunori Yamao
Tadashi Ishikura
Keiichiro Otomura
Sakae Fujisaki
Yoshikazu Ogura
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.