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US Patent 5470874 - Ascorbic acid and proanthocyanidine composition for topical application to human skin

US Patent Issued on November 28, 1995
Estimated Patent Expiration Date: Icon_subject October 14, 2014Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
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Abstract

A method and composition for topically administering ascorbic acid and proanthocyanidine for application to human skin care. The substance is composed of 10% to 25% ascorbic acid and at least 0.5% to 5% proanthocyanidine in combination with a high ratio water surfactant. Non-irritating thickeners, preservatives and carriers synergize to allow penetration of a serum composition to access the entire dermal membrane. The composition possesses sunscreen properties and superior collagen repair means.

Inventor

Application

No. 323095 filed on 10/14/1994

US Classes:

514/474, Ascorbic acid or derivative (e.g., vitamin C, etc.)424/59, TOPICAL SUN OR RADIATION SCREENING, OR TANNING PREPARATIONS424/60, Aromatic acid or derivative containing (e.g., aminobenzoic acid or methyl salicylate, etc.)424/195.18, NATURAL RESIN, GUM, OR BALSAM AS ACTIVE INGREDIENT (E.G., CONIFER RESIN, PINE GUM, ROSIN, NATURAL LATEX, ETC.)514/54, Polysaccharide514/56, Heparin or derivative514/453Polycyclo ring system having the hetero ring as one of the cyclos

Field of Search

424/59, TOPICAL SUN OR RADIATION SCREENING, OR TANNING PREPARATIONS424/60, Aromatic acid or derivative containing (e.g., aminobenzoic acid or methyl salicylate, etc.)514/54, Polysaccharide514/56, Heparin or derivative514/453, Polycyclo ring system having the hetero ring as one of the cyclos514/474Ascorbic acid or derivative (e.g., vitamin C, etc.)

Examiners

Primary: Griffin, Ronald W.

Attorney, Agent or Firm

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International Classes

A61K 006/00
A61K 031/34
A61K 031/355

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