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:
Mar. 23, 2010
Filed:
Jan. 07, 2004
Tomomichi Umekawa, Osaka, JP;
Tsutomu Kohsaka, Nagoya, JP;
Keita Hibi, Gifu, JP;
Tomomi Inagaki, Gifu, JP;
Toh-ichiro Hatori, Gunma, JP;
Tomomichi Umekawa, Osaka, JP;
Tsutomu Kohsaka, Nagoya, JP;
Keita Hibi, Gifu, JP;
Tomomi Inagaki, Gifu, JP;
Toh-ichiro Hatori, Gunma, JP;
Futamura Kagaku Kabushiki Kaisha, Aichi-ken, JP;
Gun-Ei Kagaku Kogyo Kabushiki Kaisha, Gunma, JP;
Abstract
A medical adsorbent which produces minimal side-effects such as constipation, has excellent adsorption for ionic organic compounds such as causative substances of uremia, exhibits adequate adsorption performance at low doses and avoids adsorption of high-molecular compounds necessary for the body, such as enzymes and polysaccharides. The medical adsorbent comprises activated carbon obtained by carbonizing a spherical phenol resin in a nitrogen atmosphere at a temperature of 400-1000° C., activating the carbonized spherical phenol resin at a temperature of 800-1000° C., washing it with dilute hydrochloric acid, heat treating it at a temperature of 150-1000° C. in a mixed gas comprising oxygen and nitrogen and then sorting it; the activated carbon has an area to weight ratio of 500-2000 m/g, a pore volume of 0.2-1.0 mL/g and a packing density of 0.5-0.75 g/mL.