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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 11370923 B1

PDFFull Text
Date of Patent:
Jun. 28, 2022

Filed:

Oct. 23, 2017

Black pearlescent pigment using natural charcoal and production method thereof

Applicant:

Cqv Co., Ltd., Chungcheongbuk-do, KR;

Inventors:

Kum-Sung Cho, Eumseong-gun, KR;

Kwang-Choong Kang, Cheongju-si, KR;

Byung-Ki Choi, Cheongju-si, KR;

Kwang-Soo Lim, Cheongju-si, KR;

Kil-Wan Chang, Cheongju-si, KR;

Assignee:

CQV CO., LTD., Chungcheongbuk-Do, KR;

Attorney:

Hauptman Ham, LLP

Primary Examiner:

Jessica Worsham

Int. Cl.
CPC ...
A61K 8/19 (2006.01); C09C 3/06 (2006.01); A61Q 1/10 (2006.01); C09D 5/36 (2006.01); C09D 17/00 (2006.01); A61Q 3/02 (2006.01); A61Q 19/00 (2006.01); A61K 8/02 (2006.01); A61Q 1/00 (2006.01); A61K 8/97 (2017.01); C09C 1/00 (2006.01);
U.S. Cl.
CPC ...
C09C 3/063 (2013.01); A61K 8/022 (2013.01); A61K 8/0254 (2013.01); A61K 8/19 (2013.01); A61K 8/97 (2013.01); A61Q 1/00 (2013.01); A61Q 1/10 (2013.01); A61Q 3/02 (2013.01); A61Q 19/00 (2013.01); C09C 1/0021 (2013.01); C09C 3/06 (2013.01); C09D 5/36 (2013.01); C09D 17/004 (2013.01); A61K 2800/412 (2013.01); A61K 2800/42 (2013.01); A61K 2800/436 (2013.01); A61K 2800/652 (2013.01); C01P 2004/60 (2013.01); C01P 2004/61 (2013.01); C01P 2006/60 (2013.01);
Abstract

The present invention relates to a technology for producing a black pearlescent pigment for cosmetics which is a human-friendly and nature-friendly by using a pigment including natural charcoal powder. The production method of the pearlescent pigment using natural charcoal according to the present invention includes (a) milling natural charcoal to produce a pigment including natural charcoal powder; and (b) coating a flake substrate with the produced pigment including the natural charcoal powder, wherein the milling is performed at 20 to 40 Hz for 24 to 72 hours, and an average particle size of the pigment including the natural charcoal powder is 100 to 300 nm.

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