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:
Jun. 02, 2009
Filed:
Feb. 23, 2004
Applicants:
Takahiro Kawakatsu, Atsugi, JP;
Nobuhiro Orita, Yokohama, JP;
Naoto Hitotsuyanagi, Kanagawa, JP;
Inventors:
Assignee:
Kurita Water Industries Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B08B 9/027 (2006.01); B08B 3/04 (2006.01); C11D 3/20 (2006.01); C11D 3/43 (2006.01);
U.S. Cl.
CPC ...
Abstract
A detergent and a method for washing applicable to selectively permeable membranes for proposed, which can attain washing of selectively permeable membranes deteriorated in its membrane performance, such as the flux, in an efficient manner within a brief time at a higher detergent effect without causing deterioration of the selectively permeable membranes and without damaging safety to human and to environment with superior handling aspect. The detergent contains a polyol having a molecular weight not higher than 400 and, if necessary, an organic solvent.