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.:

US 8293819 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 23, 2012

Filed:

Nov. 22, 2007
Applicants:

Kohei Watanabe, Chofu, JP;

Takeshi Miyazaki, Yokohama, JP;

Yasuhiko Tabata, Kyoto, JP;

Inventors:

Kohei Watanabe, Chofu, JP;

Takeshi Miyazaki, Yokohama, JP;

Yasuhiko Tabata, Kyoto, JP;

Assignees:

Canon Kabushiki Kaisha, Tokyo, JP;

Medgel Corporation, Kyoto-shi, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method is provided for producing particles which is capable of producing particles in simple and easy steps. The objective is to provide with a high yield particles having a homogeneous particle diameter and a superior dispersibility in liquid. The method includes (1) preparing an aqueous solution containing one or more polymer; and (2) introducing the aqueous solution as droplets into a solvent capable of dissolving water by 1 mass % or more and less than 50 mass % to form the polymer into dispersed particles in the mixture of the aqueous solution and the solvent in the mixture of the aqueous solution and the solvent.


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