Granted Patent
Utility
US 6,338,784 · App. 09/030,943
Apparatus for producing deionized water
Inventors:
Ichiro Terada, Hiroshi Toda, Kazuo Umemura, Mark Philip Huehnergard, David Florian Tessier, Ian Glenn Towe
Patented Case
View Patent ↗
Granted: Jan 15, 2002
Filed: Feb 26, 1998
Inventors
Ichiro Terada
Hiroshi Toda
Kazuo Umemura
Mark Philip Huehnergard
David Florian Tessier
Ian Glenn Towe
Assignees (at issue)
ASAHI GLASS CO., LTD.
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.