Granted Patent
Utility
US 4,305,920 · App. 06/117,006
Process for producing solid titanium trichloride
Inventors:
Masayoshi Hasuo, Yoshinori Suga, Yoshiteru Kobayashi, Kazuhisa Kojima, Masatoshi Suzuki
Patented Case
View Patent ↗
Granted: Dec 15, 1981
Filed: Jan 30, 1980
Inventors
Masayoshi Hasuo
Yoshinori Suga
Yoshiteru Kobayashi
Kazuhisa Kojima
Masatoshi Suzuki
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.