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. 18, 1991
Filed:
Jan. 03, 1990
Applicant:
Inventors:
Nami Kubo, Otsu, JP;
Toshio Yoshioka, Otsu, JP;
Kouichi Saito, Kasatsu, JP;
Syunroku Tohyama, Yasu, JP;
Assignee:
Toray Industries, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; C02F / ;
U.S. Cl.
CPC ...
210682 ; 210686 ; 210290 ; 431-2 ;
Abstract
The present invention relates to a method for purification of liquids. Fur particulars, the present invention relates to a method for purifying more precisely liquids in atomic power related fields, using a mixture of a polymer in which carboxyl groups are grafted onto a polyamide or a polyester as a cation exchanger and an anion exchanger.