Granted Patent
Utility
US 4,448,711 · App. 06/213,005
Process for producing zeolite adsorbent and process for treating radioactive liquid waste with the zeolite adsorbent
Inventors:
Kenji Motojima, Fumio Kawamura
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: Dec 4, 1980
Inventors
Kenji Motojima
Fumio Kawamura
Assignee (at issue)
HITACHI, 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.