Patents by Inventor Anne Delk

Anne 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: 4806360
    Abstract: Melanin compositions include a melanin pigment incorporated 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 dispersed in a suitable vehicle or carrier. The melanin compositions are found to display enhanced absorbance of ultraviolet radiation when compared to melanin pigments which are not incorporated in such a polymeric particle matrix.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: February 21, 1989
    Assignee: Advanced Polymer Systems
    Inventors: Helen Leong, Martin Katz, Anne Delk, David Berliner, Sergio Nacht