Granted Patent
Utility
US 5,503,812 · App. 08/302,895
Method for separating and purifying fission noble metals
Inventors:
Kenji Kirishima, Hisaaki Shimauchi, Hiroshi Nakahira, Haruo Shibayama, Yukio Wada
Patented Case
View Patent ↗
Granted: Apr 2, 1996
Filed: Sep 19, 1994
Inventors
Kenji Kirishima
Hisaaki Shimauchi
Hiroshi Nakahira
Haruo Shibayama
Yukio Wada
Assignees (at issue)
Doryokuro Kakunenryo Kaihatsu Jigyodan
SUMITOMO METAL MINING CO., LTD.
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.