Granted Patent
Utility
US 6,071,397 · App. 09/040,309
Apparatus for producing deionized water
Inventors:
Ichiro Terada, Kazuo Umemura, Junjiro Iwamoto, Ken Komatsu, Mark Philip Huehnergard
Patented Case
View Patent ↗
Granted: Jun 6, 2000
Filed: Mar 18, 1998
Inventors
Ichiro Terada
Kazuo Umemura
Junjiro Iwamoto
Ken Komatsu
Mark Philip Huehnergard
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.