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:
Nov. 28, 1989
Filed:
Mar. 11, 1988
Applicant:
Inventors:
Wataru Agui, Tokyo, JP;
Shuji Tamura, Ohmiya, JP;
Hiroshi Kuyama, Urawa, JP;
Yoshiya Kurachi, Tokyo, JP;
Masahiko Abe, Noda, JP;
Yukihiro Kaneko, Funabashi, JP;
Keizo Ogino, Tokyo, JP;
Assignee:
Tokyo Organic Chemical Industries, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C02F / ; C02F / ;
U.S. Cl.
CPC ...
210638 ; 210668 ; 210692 ; 210900 ;
Abstract
A carbonaceous absorbent to be used for the removal of a pyrogen dissolved in water is disclosed. The absorbent is obtained by carbonizing porous beads of a cross-linked polymer. This absorbent is favorably used for the removal of endotoxin in the production of pure water from deionized water resulting from the treatment with iron-exchange resins.