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:
Jul. 11, 2017
Filed:
Mar. 14, 2012
Applicants:
Takashi Kusakari, Takatsuki, JP;
Kentaro Yamashita, Takatsuki, JP;
Inventors:
Takashi Kusakari, Takatsuki, JP;
Kentaro Yamashita, Takatsuki, JP;
Assignee:
SUNSTAR INC., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 36/704 (2006.01); A61K 31/519 (2006.01); A61Q 17/00 (2006.01); A61Q 19/00 (2006.01); A61K 8/97 (2017.01); A61K 8/49 (2006.01);
U.S. Cl.
CPC ...
A61K 31/519 (2013.01); A61K 8/4953 (2013.01); A61K 8/97 (2013.01); A61K 36/704 (2013.01); A61Q 17/005 (2013.01); A61Q 19/00 (2013.01); A61K 2236/30 (2013.01);
Abstract
An object of the present invention is to provide a tryptanthrin-containing indigo-plant leaf extract particularly suitable for application to the skin. The present invention provides a method for producing a tryptanthrin-containing indigo-plant leaf extract, the method comprising filtering a mixture of a concentrated ethanol extract of indigo-plant leaves and a polyhydric alcohol, and collecting the filtrate. The present invention further provides an indigo-plant leaf extract produced by this method.