Patents by Inventor David W. Swan

David W. Swan 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).

  • Thermal imaging system
    Patent number: 5486857
    Abstract: A thermal imaging device having a print surface adapted to provide localised heating to a medium comprising a thermally activatable component of an imaging forming system, the device comprising the following sequential layers:(a) a transparent or semi-transparent electrically conductive layer,(b) a photoconductive layer which when illuminated by radiation of 633 nm wavelength and intensity of 4.0.times.10.sup.6 W/m.sup.2 has a conductivity of at least 0.01 S/cm and a photosensitive ratio of at least 1.times.10.sup.
    Type: Grant
    Filed: January 13, 1993
    Date of Patent: January 23, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: David P. H. Smith, Mark T. Leonard, David W. Swan
  • Thermal imaging system
    Patent number: 5262800
    Abstract: A thermal imaging device having a print surface adapted to provide localised heating to a medium comprising a thermally activatable component of an imaging forming system, the device comprising the following sequential layers:(a) a transparent or semi-transparent electrically conductive layer,(b) a photoconductive layer which when illuminated by radiation of 633 nm wavelength and intensity of 4.0.times.10.sup.6 W/m.sup.2 has a conductivity of at least 0.01 S/cm and a photosensitive ratio of at least 1.times.10.sup.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: November 16, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: David P. H. Smith, Mark T. Leonard, David W. Swan