Patents by Inventor Mavis C. Pereira

Mavis C. Pereira 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).

  • Water-in-oil transparent emulsion for the skin
    Patent number: 5216033
    Abstract: A water-in-silicone oil transparent emulsion is made from a volatile polydimethylsiloxane (1 to 50% by weight), a silicone surfactant (0.1 to 20% by weight), at least one polyhydric alcohol (1 to 50% by weight) and water.The silicone surfactant comprises a polymer of dimethyl polysiloxane with polyoxyethylene and/or polyoxypropylene side chains having a molecular weight of from 10,000 to 50,000 and having the structure: ##STR1## a having a value of from 9 to 115, b having a value of from 0 to 50,x having a value of from 133 to 673,y having a value of from 25 to 0.25.
    Type: Grant
    Filed: June 28, 1990
    Date of Patent: June 1, 1993
    Assignee: Chesebrough-Pond's USA Co., Division of Conopco, Inc.
    Inventors: Mavis C. Pereira, Udo Spiegel
  • Cosmetic composition
    Patent number: 5196187
    Abstract: A water-pin-silicone oil emulsion, suitable for topical application to mammalian skin or hair, comprises, in addition to water, a volatile polydimethylsiloxane, a silicone surfactant ingredient comprising a polymer of dimethylpolysiloxane with polyoxyethylene and/or polyoxypropylene side chains having a molecular weight of from 10,000 to 50,000, a 2-hydroxyalkanoic acid or derivative thereof, ultrafine titanium dioxide, and an inorganic electrolyte.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: March 23, 1993
    Assignee: Chesebrough-Pond's USA Co., Division of Conopco, Inc.
    Inventors: Gregg A. Nicoll, Ann C. Ojo-Osagie, Mavis C. Pereira
  • Cosmetic composition
    Patent number: 4981845
    Abstract: An emulsion suitable for topical application to human skin or hair comprises, in addition to water from 0.01 to 20% by weight of a skin benefit ingredient, preferably a 2-hydroxyalkanoic acid having from 3 to 20 carbon atoms, or a salt thereof; from 0.1 to 20% by weight of polyoxyethylene-21-stearyl ether, as a principle emulsifier and from 0.5 to 70% by weight of an emollient oil.
    Type: Grant
    Filed: August 25, 1989
    Date of Patent: January 1, 1991
    Assignee: Chesebrough Pond's U.S.A. Co., Division of Conopco, Inc.
    Inventor: Mavis C. Pereira