Patents by Inventor Nathan L. Bauld

Nathan L. Bauld 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).

  • Di- and triphenylated cation radical polymers and their use as Diels-Alder catalysts
    Patent number: 4552928
    Abstract: A regenerative catalyst composition is provided comprising polymer supported covalently bound di- or triphenylated cation radical salts, wherein the cation radical is a Group VA element and the complementing anion is a Lewis acid anion or other anion, such as perhalo acid or acid metal halide. The phenylated cation radical salts, either polymer supported or unsupported, are useful catalytic agents facilitating the versatile Diels-Alder organic synthetic reactions to form cyclohexene compounds including the more intricate terpenoids, steroids, alkaloids, and prostaglandinoids.
    Type: Grant
    Filed: September 17, 1984
    Date of Patent: November 12, 1985
    Assignee: Board of Regents, The University of Texas System
    Inventors: Nathan L. Bauld, Dennis J. Bellville
  • Di- and triphenylated cation radical polymers and their use as Diels-Alder catalysts
    Patent number: 4503195
    Abstract: A regenerative catalyst composition is provided comprising polymer supported covalently bound di- or triphenylated cation radical salts, wherein the cation radical is a Group VA element and the complementing anion is a Lewis acid anion or other anion, such as perhalo acid or acid metal halide. The phenylated cation radical salts, either polymer supported or unsupported, are useful catalytic agents facilitating the versatile Diels-Alder organic synthetic reactions to form cyclohexene compounds including the more intricate terpenoids, steroids, alkaloids, and prostaglandinoids.
    Type: Grant
    Filed: November 2, 1981
    Date of Patent: March 5, 1985
    Assignee: Board of Regents, The University of Texas System
    Inventors: Nathan L. Bauld, Dennis J. Bellville