Granted Patent
Utility
US 5,112,593 · App. 07/595,651
Production process of chlorine
Inventors:
Hiroyuki Itoh, Yoshitsugu Kono, Isao Kikuchi, Shinji Takenaka, Masanobu Ajioka
Patented Case
View Patent ↗
Granted: May 12, 1992
Filed: Oct 9, 1990
Inventors
Hiroyuki Itoh
Yoshitsugu Kono
Isao Kikuchi
Shinji Takenaka
Masanobu Ajioka
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.