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. 22, 2014
Filed:
Oct. 27, 2006
Kouji Tamori, Tsuchiura, JP;
Tetsuo Fukuta, Tsuchiura, JP;
Mitsuhiro Murata, Ushiku, JP;
Masaru Ueno, Tsukuba, JP;
Satoshi Katayose, Tsuchiura, JP;
Eiji Takamoto, Tsuchiura, JP;
Kiyoshi Kasai, Kameyama, JP;
Kouji Tamori, Tsuchiura, JP;
Tetsuo Fukuta, Tsuchiura, JP;
Mitsuhiro Murata, Ushiku, JP;
Masaru Ueno, Tsukuba, JP;
Satoshi Katayose, Tsuchiura, JP;
Eiji Takamoto, Tsuchiura, JP;
Kiyoshi Kasai, Kameyama, JP;
JSR Corporation, Tokyo, JP;
Abstract
The organic polymer particles comprise a carboxyl group and 2,3-dihydroxypropyl group, and the magnetic particles for diagnostics comprise fine magnetic material particles and a polymer part containing a hydrophilic polymer part and a crosslinked polymer part, a dry coating film obtained from a water dispersion thereof having a contact angle with water of 5° to 60°. The process for producing the carboxyl group-containing particles comprises a step of producing an ester bond by reacting a hydroxyl group in organic polymer particles having the hydroxyl group with a carboxylic anhydride. The organic polymer particles comprise a hydroxyl group originating from a 2,3-dihydroxypropyl group and a polyoxyethylene group.