Patents by Inventor James Klein Leonard

James Klein Leonard 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).

  • Poly (non-conjugated diene) based sunscreens
    Patent number: 8540976
    Abstract: A poly(non-conjugated diene) based sunscreen has a plurality of repeating units where each repeating unit has at least one UV absorbing chromophore that is situated between and connected by chains to two mono-ene units where each UV absorbing chromophore absorb UVA and UVB light. The poly(non-conjugated diene) based sunscreen can be included with a vehicle for application to the skin to prevent sunburn. The poly(non-conjugated diene) based sunscreen can be prepared by acyclic diene metathesis polymerization.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: September 24, 2013
    Assignee: University of Florida Research Foundation, Inc.
    Inventors: James Klein Leonard, Kenneth Berry Sloan, Kenneth Boone Wagener
  • POLY (NON-CONJUGATED DIENE) BASED SUNSCREENS
    Publication number: 20120009133
    Abstract: A poly(non-conjugated diene) based sunscreen has a plurality of repeating units where each repeating unit has at least one UV absorbing chromophore that is situated between and connected by chains to two mono-ene units where each UV absorbing chromophore absorb UVA and UVB light. The poly(non-conjugated diene) based sunscreen can be included with a vehicle for application to the skin to prevent sunburn. The poly(non-conjugated diene) based sunscreen can be prepared by acyclic diene metathesis polymerization.
    Type: Application
    Filed: April 1, 2010
    Publication date: January 12, 2012
    Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: James Klein Leonard, Kenneth Berry Sloan, Kenneth Boone Wagener
  • Polyethylene Based Bioactive Agents
    Publication number: 20100255050
    Abstract: The present invention concerns an acyclic diene metathesis (ADMET) chemistry-based method of making polymers incorporating biologically active molecules, and the polymers formed thereby. Functionalized polymers prepared by this method can be used to produce a broad range of commercially important products such as drag delivery agents (prodrugs), chromatography reagents (e.g., for use in separatory reagents), biomimetics, and biodegradable synthetic polymers.
    Type: Application
    Filed: July 24, 2008
    Publication date: October 7, 2010
    Inventors: James Klein Leonard, Kenneth Boone Wagener