Granted Patent
Utility
US 6,395,239 · App. 09/615,320
Ozonizer
Inventors:
Yoichiro Tabata, Akira Usui
Patented Case
View Patent ↗
Granted: May 28, 2002
Filed: Jul 13, 2000
Inventors
Yoichiro Tabata
Akira Usui
Assignee (at issue)
MITSUBISHI ELECTRIC CORPORATION
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.