Granted Patent
Utility
US 5,073,305 · App. 07/569,976
Method of evacuating radioactive waste treating container to vacuum
Inventors:
Hidehiko Miyao, Masao Shiotsuki, Shigeyoshi Kawamura, Fumiaki Komatsu
Patented Case
View Patent ↗
Granted: Dec 17, 1991
Filed: Aug 20, 1990
Inventors
Hidehiko Miyao
Masao Shiotsuki
Shigeyoshi Kawamura
Fumiaki Komatsu
Assignees (at issue)
Kabushiki Kaisha Kobe Seiko Sho
Doryokuro Kakunenryo
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.