The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 1999
Filed:
Mar. 26, 1997
Applicant:
Inventors:
Hirohisa Kubota, Yokohama, JP;
Katsuhiko Yano, Yokohama, JP;
Junya Watanabe, Yokohama, JP;
Keiko Kudo, Yokohama, JP;
Assignee:
Mitsubishi Chemical Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C02F / ; C02F / ;
U.S. Cl.
CPC ...
210638 ; 210683 ; 210685 ; 210686 ; 210900 ;
Abstract
The present invention relates to a process for producing pure water having a total organic carbon content of not more than 200 ppb instantly after start of the operation of a high purity water system, comprising using as an ion exchange resin a specific strongly basic anion exchange resin and passing raw water through the high purity water system at a space velocity of not less than 20. The produced pure water is capable of producing tasteless and odorless pure water instantly after start of the operation of the high purity water system.