Patents by Inventor David Esanu, deceased

David Esanu, deceased 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).

  • Magnesium salt copolymers of unsaturated dicarboxylic acid anhydride and unsaturated monomer having a lipophile chain
    Patent number: 3936427
    Abstract: Copolymers formed from an unsaturated dicarboxylic acid anhydride and an unsaturated monomer having a lipophile chain having a molecular weight of 4,000-100,000 are usefully employed to produce a water-in-oil emulsion which can be incorporated into cosmetic compositions.
    Type: Grant
    Filed: March 25, 1974
    Date of Patent: February 3, 1976
    Assignee: Societe Anonyme dite: L'Oreal
    Inventors: Andre Viout, David Esanu, deceased, Lydie Esther Samama, administratrix