Patents by Inventor Thomas K. Foreman

Thomas K. Foreman 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).

  • PHOTOSENSITIVE DRY FILM COMPOSITIONS
    Publication number: 20160327861
    Abstract: A photosensitive dry film composition includes a hexaarylbiimidazole blend, a photosensitizer that absorbs in the 350 to 410 nm wavelength range and a hydrogen donor. The hexaarylbiimidazole blend includes a hexaarylbiimidazole having a molar extinction coefficient of at least 4,000 in the 350 to 410 nm wavelength range and a hexaarylbiimidazole having a molar extinction coefficient of less than 4,000 in the 350 to 410 nm wavelength range.
    Type: Application
    Filed: May 5, 2016
    Publication date: November 10, 2016
    Inventors: Thomas K. Foreman, YUNG-CHUNG CHEN
  • Slot-coupling of optical waveguide to optical waveguide devices
    Patent number: 5062681
    Abstract: An optical waveguide device adaptable to be coupled with a similar optical waveguide device through commensurate slots on the devices, the slots guiding the ends of the respective waveguides into contact with each other, and into properly aligned optical coupling.
    Type: Grant
    Filed: May 2, 1990
    Date of Patent: November 5, 1991
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert J. Furmanak, Bruce L. Booth, Thomas K. Foreman