Patents by Inventor Joseph N. A. Roy

Joseph N. A. Roy 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).

  • Coating of granulated organic dyes with an epoxy
    Patent number: 4315043
    Abstract: A method of coating an organic dye composition with an inert coating material, such as an epoxy resin, is disclosed which improves the mechanical properties of the organic dye particles and enables the production of pour-castable colored smoke-producing compositions of high solids loading.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: February 9, 1982
    Assignee: Her Majesty the Queen in Right of Canada, as represented by the Minister of National Defence
    Inventors: Joseph E. G. Couture, Joseph N. A. Roy
  • Coating of granulated organic dyes with an epoxy
    Patent number: 4225368
    Abstract: This invention relates to organic dye compositions of improved mechanical properties and to a method of coating the dye with an inert coating material which enables the production of pour-castable colored smoke-producing compositions of high solids loading, particularly when a red dye e.g. Disperse Red 9, is employed.
    Type: Grant
    Filed: June 26, 1979
    Date of Patent: September 30, 1980
    Assignee: Canadian Department of National Defence
    Inventors: Joseph E. G. Couture, Joseph N. A. Roy