Granted Patent
Utility
US 5,961,805 · App. 08/952,218
Method and apparatus for producing deionized water
Inventors:
Ichiro Terada, Hiroshi Toda, Junjiro Iwamoto, Kazuo Umemura, Ken Komatsu, Tohru Hoshi, Mark Philip Huehnergard, David Florian Tessier, Ian Glenn Towe
Patented Case
View Patent ↗
Granted: Oct 5, 1999
Filed: Nov 21, 1997
Inventors
Ichiro Terada
Hiroshi Toda
Junjiro Iwamoto
Kazuo Umemura
Ken Komatsu
Tohru Hoshi
Mark Philip Huehnergard
David Florian Tessier
Ian Glenn Towe
Assignees (at issue)
Ashai Glass Company, Limited
Glegg Water Conditioning, 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.