Patents by Inventor Paul Wollcott Harrison

Paul Wollcott Harrison 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).

  • High contrast surface marking using mixed organic pigments
    Patent number: 6855910
    Abstract: A method of laser marking metals, plastics, ceramic materials, glazes, glass ceramics, and glasses of any desired form, which includes applying to the material to be marked a variable thickness layer of marking material containing energy absorbing enhancers then irradiating said layer with a laser or diode based energy source such that the radiation is directed onto said layer in accordance with the form of the marking to be applied, and using a laser or diode based energy source of a wavelength which is sufficiently absorbed by the marking material so as to create a bonding of the marking material to the surface of the workpiece at the irradiated areas.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: February 15, 2005
    Assignee: Thermark, LLC
    Inventor: Paul Wollcott Harrison
  • High contrast surface marking using irradiation of electrostatically applied marking materials
    Patent number: 6852948
    Abstract: A method of radiantly marking substrates including metals, plastics, ceramic materials, glazes, glass ceramics, and glasses of any desired form, which comprises electrostatically applying to the material to be marked a variable thickness layer of marking material containing energy absorbing components and/or enhancers, then irradiating said layer with a radiant energy source such as a laser or diode based energy source such that the radiation is directed onto said layer, optionally in accordance with the form of the marking to be applied, preferably using a laser or diode based energy source of a wavelength which is sufficiently absorbed by the marking material so as to create a bonding of the marking material to the surface of the workpiece at the irradiated areas.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: February 8, 2005
    Assignee: TherMark, LLC
    Inventor: Paul Wollcott Harrison
  • High contrast surface marking using mixed organic pigments
    Publication number: 20020079297
    Abstract: A method of laser marking metals, plastics, ceramic materials, glazes, glass ceramics, and glasses of any desired form, which comprises applying to the material to be marked a variable thickness layer of marking material containing energy absorbing enhancers then irradiating said layer with a laser or diode based energy source such that the radiation is directed onto said layer in accordance with the form of the marking to be applied, and using a laser or diode based energy source of a wavelength which is sufficiently absorbed by the marking material so as to create a bonding of the marking material to the surface of the workpiece at the irradiated areas.
    Type: Application
    Filed: November 6, 2001
    Publication date: June 27, 2002
    Inventor: Paul Wollcott Harrison
  • High contrast surface marking using metal oxides
    Patent number: 6313436
    Abstract: A method of laser marking metals, plastics, ceramic materials, glazes, glass ceramics, and glasses of any desired form, which comprises applying to the material to be marked a variable thickness layer of marking material containing energy absorbing enhancers then irradiating said layer with a laser or diode based energy source such that the radiation is directed onto said layer in accordance with the form of the marking to be applied, and using a laser or diode based energy source of a wavelength which is sufficiently absorbed by the marking material so as to create a bonding of the marking material to the surface of the workpiece at the irradiated areas.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: November 6, 2001
    Assignee: Thermark, LLC
    Inventor: Paul Wollcott Harrison
  • High contrast surface marking
    Patent number: 6075223
    Abstract: A method of laser marking metals, plastics, ceramic materials, glazes, glass ceramics, and glasses of any desired form, which comprises applying to the material to be marked a variable thickness layer of marking material containing energy absorbing enhancers then irradiating said layer with a laser or diode based energy source such that the radiation is directed onto said layer in accordance with the form of the marking to be applied, and using a laser or diode based energy source of a wavelength which is sufficiently absorbed by the marking material so as to create a bonding of the marking material to the surface of the workpiece at the irradiated areas.
    Type: Grant
    Filed: September 8, 1997
    Date of Patent: June 13, 2000
    Assignee: Thermark, LLC
    Inventor: Paul Wollcott Harrison