Granted Patent
Utility
US 4,351,744 · App. 06/192,880
Karl-Fischer Reagent
Inventors:
Kaname Muroi, Hiroko Fujino
Patented Case
View Patent ↗
Granted: Sep 28, 1982
Filed: Oct 1, 1980
Inventors
Kaname Muroi
Hiroko Fujino
Assignee (at issue)
Mitsubishi Chemical Industries, Ltd.
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.