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:
Feb. 01, 1994
Filed:
May. 28, 1992
Applicant:
Inventors:
Toshio Tatsuno, Osaka, JP;
Mitsuo Miyamoto, Osaka, JP;
Yoshiharu Ohta, Tokyo, JP;
Koichi Sawada, Tokyo, JP;
Assignees:
Morita Kagaku Kogyo Co., Ltd., both of, JP;
Normura Micro Science Co., Ltd., both of, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210638 ; 210641 ; 210651 ; 210652 ;
Abstract
A method of feeding pure water under germ-free conditions is provided by purifying raw water into primary water by successive passage through a defined series of purification units, temporarily storing the primary water in a primary water tank, further purifying the stored water to still higher purity by passage through a defined series of purification units; injecting HF or a salt of HF into the thus-purified water in bacteriostatic and sterilizing concentrations and then feeding it to its point of use.