Granted Patent
Utility
US 4,844,838 · App. 07/154,213
Method of treatment of radioactive liquid waste
Inventors:
Katsuyuki Ohtsuka, Yoshiharu Takahashi
Patented Case
View Patent ↗
Granted: Jul 4, 1989
Filed: Feb 10, 1988
Inventors
Katsuyuki Ohtsuka
Yoshiharu Takahashi
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.