Patents by Inventor Ann Delk

Ann Delk 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).

  • Synthetic melanin aggregates
    Patent number: 4855144
    Abstract: Melanin compositions include a melanin pigment incorporated within polymeric particles, usually within an internal pore network defined by a polymeric particle matrix. The melanin compositions may be produced by in situ oxidation of melanin precursors within the pore network, or by absorption of a melanin pigment in a suitable vehicle or carrier. The melanin compositions are found to display enhanced absorbance of ultraviolet radiation and better cosmetic attributes when compared to melanin pigments which are not incorporated in such a polymeric particle matrix.
    Type: Grant
    Filed: June 14, 1988
    Date of Patent: August 8, 1989
    Assignee: Advanced Polymer Systems
    Inventors: Helen Leong, Martin Katz, Ann Delk, Sergio Nacht, David Berliner
  • Beverage container holder for use with cushioned furniture
    Patent number: D649408
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: November 29, 2011
    Inventors: Robert M Delk, Patricia Ann Delk