Patents by Inventor Robert D. Brett

Robert D. Brett 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).

  • Ink jet printer ink for printing on ceramics or glass
    Patent number: 5407474
    Abstract: A pigmented ink usable in an ink jet printer in which the maximum particle size of the pigment is sufficiently small not to block the nozzles or the filters of the printer and the particle size range is sufficiently narrow for the ink to have a low viscosity for the printer to operate. The ink is particularly suited for printing on ceramics or glass.
    Type: Grant
    Filed: August 25, 1993
    Date of Patent: April 18, 1995
    Assignee: British Ceramic Research Limited
    Inventors: Anthony C. Airey, Mark E. Crooks, Robert D. Brett
  • Off-set printing by silk screening an intermediate surface and transferring the image to an article by an off-set pad
    Patent number: 5054390
    Abstract: An ink design is silk screened onto an intermediate surface and is then transferred to an article by a deformable pad. In order to provide a large difference in the ink affinities of the intermediate surface and pad, these are made of silicone rubbers in which different catalysts are used in the curing of the rubbers. Dibutyltindilaurate as catalyst provides an intermediate surface of low ink affinity which can enable 100% transfer of ink from the intermediate surface to the pad when a stannous octoate catalyzed, condensation cured rubber, or a suitable addition cured rubber, is used for the pad. The screen is heated to a greater temperature than that of the intermediate surface.
    Type: Grant
    Filed: January 28, 1988
    Date of Patent: October 8, 1991
    Assignee: British Ceramic Research Association Ltd.
    Inventors: John F. Birtles, Robert D. Brett, Wilfred Roberts