Patents by Inventor Wasi Ahmed

Wasi Ahmed 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).

  • Platy pigments
    Patent number: 5326392
    Abstract: Platy pigments with good tactile characteristics are obtained by treating such pigments with a compound of the general formula: ##STR1## where m is an even number from 8 to 18 and n is 3 or 4 under defined conditions. N.epsilon.-lauroyl lysine is preferred. The pigments are especially useful in cosmetic compositions such as eye shadow.
    Type: Grant
    Filed: July 20, 1993
    Date of Patent: July 5, 1994
    Assignee: The Mearl Corporation
    Inventors: Harold A. Miller, Philip Greenberg, Adolph Blum, Wasi Ahmed
  • Nacreous pigments colored by adsorbed dyes
    Patent number: 4968351
    Abstract: Non-bleeding, non-agglomerated, lustrous colored nacreous pigments are prepared by admixing a laking reagent with an aqueous dispersion of a metal oxide coated substrate nacreous pigment and dyestuff.
    Type: Grant
    Filed: November 2, 1988
    Date of Patent: November 6, 1990
    Assignee: The Mearl Corporation
    Inventors: Wasi Ahmed, Louis Armanini