Granted Patent
Utility
US 4,630,779 · App. 06/761,719
Method for discharging consolidated waste catalyst
Inventors:
Osamu Suuchi, Shuzo Mimaya, Masaru Ohashi
Patented Case
View Patent ↗
Granted: Dec 23, 1986
Filed: Aug 2, 1985
Inventors
Osamu Suuchi
Shuzo Mimaya
Masaru Ohashi
Assignee (at issue)
Nippon Mining Company Limited
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.