Granted Patent
Utility
US 4,526,658 · App. 06/550,391
Method for improving ruthenium decontamination efficiency in nitric acid evaporation treatment
Inventors:
Kanya Kubota, Hajimu Yamana, Seiichiro Takeda
Patented Case
View Patent ↗
Granted: Jul 2, 1985
Filed: Nov 10, 1983
Inventors
Kanya Kubota
Hajimu Yamana
Seiichiro Takeda
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.