Patents by Inventor Andrew C. Park

Andrew C. Park has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for inhibiting the dissolution of antiperspirant compounds in alcohols
    Patent number: 5518714
    Abstract: A method of inhibiting the dissolution in anhydrous ethanol or isopropanol of a powdered aluminium-containing basic halide antiperspirant agent which comprises incorporating in the ethanol or isopropanol an amount effective to inhibit said dissolution of an alcohol soluble or alcohol-insoluble dissolution-inhibiting compound selected from the group consisting of compounds having a basic nitrogen function and compounds having a basic oxygen function. Examples of dissolution-inhibiting compounds are urea, thiorea, amino acids, C.sub.1 -C.sub.20 alkylamines and hydroxyalklyamines, inorganic bases, and alkali metal and alkaline-earth metal salts of inorganic acids and C.sub.1 -C.sub.20 organic carboxylic acids. The dissolution-inhibiting compound may alternatively be a particulate alcohol-insoluble inorganic drying agent such as a molecular sieve.
    Type: Grant
    Filed: April 22, 1985
    Date of Patent: May 21, 1996
    Assignee: Chesebrough-Pond's USA Co., Division of Conopco, Inc.
    Inventor: Andrew C. Park
  • Cosmetic product
    Patent number: 5250291
    Abstract: A solid antiperspirant product, such as a stick, suitable for topical application to the skin comprises an antiperspirant agent in the form of fine particles dispersed in a solid matrix. The matrix comprises anhydrous ethanol, anhydrous isopropanol or a mixture thereof, an hydrophobically-treated clay as a suspending agent, a gelling agent and other antiperspirant adjuncts as required. The weight ratio of the suspending agent to the anhydrous alcohol is from 1:3 to 1:15 to achieve maximum efficacy as measured by sweat weight reduction following topical application of the product to perspiring skin.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: October 5, 1993
    Assignee: Chesebrough-Pond's USA Co., Division of Conopco, Inc.
    Inventors: Andrew C. Park, Allan R. Burger
  • Antiperspirant product
    Patent number: 5135741
    Abstract: A roll-on antiperspirant lotion type composition comprising particles of an antiperspirant agent suspended in a liquid carrier medium wherein the suspending agent is a hydrophobic clay and the liquid medium consists of ethanol or isopropanol or a mixture thereof and 0% to about 3.times.C% by weight of the total liquid medium of one or more liquids less volatile than ethanol or isopropanol provided that where such other liquid comprises a non-polar and water-immiscible liquid such non-polar water-immiscible liquid is present in an amount of not more than about 2.times.C% by weight of the total liquid phase, where C is the percentage weight of the hydrophobic clay in the composition.
    Type: Grant
    Filed: September 19, 1990
    Date of Patent: August 4, 1992
    Assignee: Chesebrough-Pond's USA Co., Division of Conopco, Inc.
    Inventor: Andrew C. Park