Granted Patent
Utility
US 4,380,924 · App. 06/254,664
Method for monitoring flow condition of liquid metal
Inventors:
Koichiro Nakamoto, Kiyokazu Ishii, Nobumi Ohyama
Patented Case
View Patent ↗
Granted: Apr 26, 1983
Filed: Apr 16, 1981
Inventors
Koichiro Nakamoto
Kiyokazu Ishii
Nobumi Ohyama
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.