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:
Dec. 15, 2009
Filed:
Apr. 16, 2004
Takayuki Oka, Mishima-gun, JP;
Izumi Omoto, Mishima-gun, JP;
Haruma Kawaguchi, Yokohama, JP;
Wataru Wakui, Kawasaki, JP;
Takayuki Oka, Mishima-gun, JP;
Izumi Omoto, Mishima-gun, JP;
Haruma Kawaguchi, Yokohama, JP;
Wataru Wakui, Kawasaki, JP;
Sekisui Chemical Co., Ltd., Osaka-shi, JP;
Abstract
It is an object of the present invention to provide magnetic substance-encapsulated particles which have uniform magnetism, high dispersion stability and a narrow particle size distribution, a method of producing the same, particles for immunoassay formed by using the magnetic substance-encapsulated particles and a method of immunoassay in which the magnetic substance-encapsulated particles or the particles for immunoassay are used. The present invention relates to a magnetic substance-encapsulated particle, which comprises an organic polymer material and a magnetic substance having an average particle size of 1 to 30 nm, the magnetic substance being contained within a particle in a state of being dispersed.