Granted Patent
Utility
US 5,873,987 · App. 08/908,614
Reactivation of active cathode
Inventors:
Shinji Katayama, Teruo Ichisaka
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Aug 7, 1997
Inventors
Shinji Katayama
Teruo Ichisaka
Assignee (at issue)
CHLORINE ENGINEERS CORP., 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.