Patents by Inventor Brian Stubbs

Brian Stubbs 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).

  • Laser marking of substrates
    Patent number: 8278244
    Abstract: A method for marking an substrate, comprising coating the substrate with a white or colorless solution of a soluble alkali or alkaline earth metal salt of a weak acid and irradiating areas of the substrate to be marked such that those areas change color, wherein the substrate comprises a polysaccharide material.
    Type: Grant
    Filed: October 23, 2006
    Date of Patent: October 2, 2012
    Assignee: Datalase Ltd
    Inventors: Brian Stubbs, William Green
  • Laser Marking of Substrates
    Publication number: 20090117353
    Abstract: A method for marking an substrate, comprising coating the substrate with a white or colourless solution of a soluble alkali or alkaline earth metal salt of a weak acid and irradiating areas of the substrate to be marked such that those areas change colour, wherein the substrate comprises a polysaccharide material.
    Type: Application
    Filed: October 23, 2006
    Publication date: May 7, 2009
    Inventors: Brian Stubbs, William Green
  • Use of transition metal compounds in imageable coatings
    Patent number: 7270919
    Abstract: A process for forming an image on a substrate, which comprises coating the substrate with an amine of molybdenum, tungsten or vanadium that changes colour on heating or irradiation as an aqueous dispersion or suspension or as a solution in an organic solvent. Also described is a coated substrate, wherein the coating is a substantially visible light-transparent layer comprising an amine compound of molybdenum, tungsten or vanadium, and a solution of said amine compound and a thermoplastic polymer or a photo-polymerisable monomer.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: September 18, 2007
    Assignee: Datalase Ltd.
    Inventor: Brian Stubbs
  • Use of transition metal compounds in imageable coatings
    Publication number: 20060040217
    Abstract: A process for forming an image on a substrate, which comprises coati ng the substrate with an amine of molybdenum, tungsten or vanadium that changes colour on heating or irradiation as an aqueous dispersion or suspension or as a solution in an organic solvent. Also described is a coated substrate, wherein the coating is a substantially visible light-transparent layer comprising an amine compound of molybdenum, tungsten or vanadium, and a solution of said amine compound and a thermoplastic polymer or a photo-polymerisable monomer.
    Type: Application
    Filed: November 12, 2003
    Publication date: February 23, 2006
    Inventor: Brian Stubbs
  • Laser coding
    Publication number: 20050269304
    Abstract: A method for marking an object, wherein the object comprises a material including a functional group and a metal compound or acid that causes an elimination reaction on irradiation with a laser, to form a reaction product of contrasting colour, comprises directing a laser beam on to the areas of the object to be marked For example, by using a carbohydrate and a metal salt, effective marking can be achieved on the coating of a pill or other edible material.
    Type: Application
    Filed: May 31, 2005
    Publication date: December 8, 2005
    Inventors: Nazir Khan, Brian Stubbs, Joseph Gaunt