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:
Jun. 29, 1999
Filed:
Jun. 04, 1998
Applicant:
Inventors:
Jong Eon Hong, Seoul, KR;
Ki Hwa Lee, Seoul, KR;
Jun Chul Cho, Seoul, KR;
Jang Sob Lee, Yongin, KR;
Jung No Lee, Kunpo, KR;
Ji Min Chun, Yongin, KR;
Dong Il Jang, Anyang, KR;
Ok Sob Lee, Anyang, KR;
Sang Rhin Lee, Seoul, KR;
Assignee:
Pacific Corporation, Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ;
U.S. Cl.
CPC ...
514474 ; 514844 ; 514374 ; 549315 ; 549316 ; 5493351 ;
Abstract
Disclosed herein are a L-ascorbic acid derivative having an improved water-in-stability, represented by a following general formula (I): ##STR1## and a method for preparation thereof, and to a skin-whitening cosmetic composition containing the same as an active ingredient.