Granted Patent
Utility
US 4,873,031 · App. 07/139,447
Method of controlling the crystal grain size of uranium dioxide pellet
Inventors:
Tadao Yato, Sadaaki Hagino, Hiroshi Tanaka
Patented Case
View Patent ↗
Granted: Oct 10, 1989
Filed: Dec 30, 1987
Inventors
Tadao Yato
Sadaaki Hagino
Hiroshi Tanaka
Assignee (at issue)
Mitsubishi Kinzoku Kabushiki Kaisha
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.