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. 19, 2005
Filed:
Mar. 07, 2001
Takashi Kotsuka, Kanagawa, JP;
Kuniaki Shimbo, Kanagawa, JP;
Hiroshi Suzuki, Kanagawa, JP;
Hisako Sakuma, Düsseldorf, DE;
Toshio Tokuda, Tokyo, JP;
Takashi Kotsuka, Kanagawa, JP;
Kuniaki Shimbo, Kanagawa, JP;
Hiroshi Suzuki, Kanagawa, JP;
Hisako Sakuma, Düsseldorf, DE;
Toshio Tokuda, Tokyo, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
Disclosed are (1) a porous polymer particle comprising a polymer substrate having ester bonds connected to a group containing a quaternary ammonium structure through a spacer molecule, (2) an alkali-resistant, high-strength porous polymer particle having ester bonds connected to a group containing a quaternary ammonium structure through a spacer molecule, a part of the ester bonds being saponified and converted to a hydroxyl group(s), (3) a porous polymer particle comprising a polymer substrate having ester bonds connected to a group containing a quaternary ammonium structure through a spacer molecule, the porous polymer particles being treated with an alkaline solution to generate a hydroxyl and/or a carboxyl group on a surface of the substrate, (4) an anion exchanger comprising any one of the particles (1) to (3) above, (5) a packing material for anion chromatography comprising the anion exchanger (4) above, (6) a column for anion chromatography using the anion exchanger (4) above, and (7) a method for measuring anions using the anion exchanger (4) above.