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. 23, 2004
Filed:
Jun. 30, 2000
Applicant:
Inventors:
Hideki Hirai, Tokyo, JP;
Michiki Asai, Tokyo, JP;
Assignee:
Kibun Food Chemifa Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 3/1715 ; A61K 7/00 ; A61K 9/14 ; A01N 2/500 ; C08B 3/700 ; A61F 2/00 ; A61F 1/300 ;
U.S. Cl.
CPC ...
A61K 3/1715 ; A61K 7/00 ; A61K 9/14 ; A01N 2/500 ; C08B 3/700 ; A61F 2/00 ; A61F 1/300 ;
Abstract
Disclosed are propylene glycol hyaluronate esters having an esterification degree of 10-90% and a limiting viscosity of 3-35 dL/g as well as skin conditioning methods, moisturizing methods and emulsifying methods using said propylene glycol hyaluronate esters. Propylene glycol hyaluronate esters of the present invention are compounds showing excellent viscosity stability in low-pH systems and cation-containing systems and also showing high emulsifiability, hydration power and moisturizing effect.