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:
Mar. 03, 1998
Filed:
Nov. 04, 1996
Applicant:
Inventors:
Ok Sub Lee, Anyang, KR;
Young Hun Byon, Yongin, KR;
Bo Sub Lee, Yongin, KR;
Jong Eon Hong, Seoul, KR;
Jae Suk Ko, Seoul, KR;
Yun Ki Cho, Yongin, KR;
Ho Lee, Suwon, KR;
Assignee:
Pacific Corporation, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
558132 ; 558133 ; 558166 ;
Abstract
Disclosed herein is a method for preparing 3-aminopropane phosphoric acid represented by the formula (I), comprising the steps of (a) reacting 3-amino-1-propanoi with phosphorus oxychloride at a low temperature, and (b) hydrolyzing the product of the step (a) in the presence of an acidic catalyst, and a cosmetic composition containing 3-aminopropanic phosphoric acid or its salts as an active ingredient. ##STR1##