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:
Apr. 20, 1993
Filed:
Mar. 30, 1992
Applicant:
Inventors:
Assignee:
Toray Industries, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J / ; C08J / ;
U.S. Cl.
CPC ...
521 32 ; 521 29 ; 525259 ; 525374 ; 525378 ; 525379 ; 525382 ; 528397 ;
Abstract
The present invention relates to a new anion exchanger with excellent heat resistance and its use for treating a fluid to remove unwanted or unnecessary substances from it. The anion exchanger has functional groups of the formula: ##STR1##