Patents by Inventor William Thomas Silfvast

William Thomas Silfvast 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).

  • Soft x-ray radiation for biological pathogen decontamination and medical sterilization applications
    Patent number: 7522702
    Abstract: A method is provided for decontaminating biological pathogens in a contaminated environment. The method includes: tailoring x-ray radiation to match the absorption characteristics of a contaminated environment; generating x-ray radiation having a diffused radiation angle in accordance with the absorption characteristics of the contaminated environment; and directing the x-ray radiation towards the contaminated environment.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: April 21, 2009
    Assignee: Harris Corporation
    Inventors: John Richard DeSalvo, Charles M. Newton, Carol Ann Gamlen, William Thomas Silfvast, Gregory Michael Shimkaveg
  • Soft x-ray radiation for biological pathogen decontamination and medical sterilization applications
    Publication number: 20080056448
    Abstract: A method is provided for decontaminating biological pathogens in a contaminated environment. The method includes: tailoring x-ray radiation to match the absorption characteristics of a contaminated environment; generating x-ray radiation having a diffused radiation angle in accordance with the absorption characteristics of the contaminated environment; and directing the x-ray radiation towards the contaminated environment.
    Type: Application
    Filed: August 29, 2006
    Publication date: March 6, 2008
    Inventors: John Richard DeSalvo, Charles M. Newton, Carol Ann Gamlen, William Thomas Silfvast, Gregory Michael Shimkaveg
  • Isotope enrichment by resonance trapping
    Patent number: 4101396
    Abstract: A photochemical method for changing the isotopic composition of an element is disclosed. The method involves passing an electron discharge through a mixture of a buffer gas, which controls the uniformity and electron temperature of the discharge, and a vapor of the element. By means of the phenomenon of resonance radiation trapping, the electron discharge preferentially excites and ionizes one isotope. Removal of the ions by cataphoresis separates the element into two amounts with different isotopic ratios.
    Type: Grant
    Filed: December 23, 1976
    Date of Patent: July 18, 1978
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: William Thomas Silfvast