Patents by Inventor David Lewis FAIRHURST

David Lewis FAIRHURST 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).

  • Diacetylene film sensitized with photoinitiator and applications of the film
    Patent number: 9797771
    Abstract: A process for improving sensitivity of a film base, coated with a dispersion of a normally crystalline polyacetylenic compound in a non-solvating liquid which is dried on the film surface, to particular photon energy band, specifically, long wavelength UV; the polyacetylenic compound preferably having at least two conjugated acetylenic linkages and containing from 12 to 60 carbon atoms. The sensitization of the film to long wavelength UV is achieved via the addition of photoinitiator(s) capable of absorbing UV energy and converting it to free radicals.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: October 24, 2017
    Assignee: ISP INVESTMENTS INC.
    Inventors: Xiang Yu, Hsiao-Yi Shih, David Lewis Fairhurst
  • DIACETYLENE FILM SENSITIZED WITH PHOTOINITIATOR AND APPLICATIONS OF THE FILM
    Publication number: 20160290859
    Abstract: A process for improving sensitivity of a film base, coated with a dispersion of a normally crystalline polyacetylenic compound in a non-solvating liquid which is dried on the film surface, to particular photon energy band, specifically, long wavelength UV; the polyacetylenic compound preferably having at least two conjugated acetylenic linkages and containing from 12 to 60 carbon atoms. The sensitization of the film to long wavelength UV is achieved via the addition of photoinitiator(s) capable of absorbing UV energy and converting it to free radicals.
    Type: Application
    Filed: March 7, 2014
    Publication date: October 6, 2016
    Applicant: ISP INVESTMENTS INC.
    Inventors: Xiang YU, Hsiao-Yi SHIH, David Lewis FAIRHURST