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, 2000
Filed:
Aug. 25, 1997
Applicant:
Inventor:
Joseph O'Reilly, County Cork, IE;
Assignee:
Montana Limited, Little Island, IE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ;
U.S. Cl.
CPC ...
4241951 ; 514 27 ;
Abstract
Extracts of leaves of Ginkgo biloba contain at least 25% glycolipids by weight, preferably at least 1% cerebrosides including galactocerebroside. The extract has less than 50 ppm of ginkgolic acid. The extract is prepared by recovering a lipid fraction which is mixed with alcohol providing an alcoholic medium. The alcoholic medium is treated in a chromatographic column with a mixture of acetone and toluene to remove neutral lipids and ginkgolic acid, and subsequently the alcoholic solution in the column is further treated with a mixture of acetone and water to extract the glycolipids. The extracts have shown activity in cosmetic and skin care applications.