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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 9901530 B1

PDFFull Text
Date of Patent:
Feb. 27, 2018

Filed:

Jul. 18, 2014

Oil-in-water emulsion composition and cosmetics

Applicant:

Daito Kasei Kogyo Co., Ltd., Osaka-shi, Osaka, JP;

Inventors:

Moeko Doi, Osaka, JP;

Noboru Nagatani, Osaka, JP;

Takumi Tanaka, Osaka, JP;

Assignee:

DAITO KASEI KOGYO CO., LTD., Osaka, JP;

Attorney:

Holtz, Holtz & Volek PC

Primary Examiner:

Nannette Holloman

Int. Cl.
CPC ...
A61K 8/85 (2006.01); A61K 8/06 (2006.01); A61Q 19/00 (2006.01); A61Q 17/04 (2006.01); A61Q 1/02 (2006.01); C08J 3/12 (2006.01);
U.S. Cl.
CPC ...
A61K 8/85 (2013.01); A61K 8/062 (2013.01); A61Q 1/02 (2013.01); A61Q 17/04 (2013.01); A61Q 19/00 (2013.01); C08J 3/12 (2013.01); A61K 2800/33 (2013.01); A61K 2800/412 (2013.01); C08J 2367/04 (2013.01);
Abstract

The present invention provides, without use of a surfactant, an oil-in-water emulsion composition and cosmetics having fresh and smooth feeling without powderiness in use, and having excellent emulsion stability by preparing a Pickering emulsion using a spherical polylactic acid powder. An oil-in-water emulsion composition is obtained as a composition containing (a) a spherical polylactic acid powder having an average particle size of from 0.5 to 1.5 μm, wherein 90% by volume or more of the whole particles of the powder have a particle size of 3 μm or less, (b) an oil phase component, and (c) an aqueous phase component, and containing substantially no surfactant. Desired cosmetics are obtained by using the oil-in-water emulsion composition.

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