Patents by Inventor Barrie Broadbent

Barrie Broadbent 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).

  • Dyeing process
    Patent number: 4348203
    Abstract: A process for dyeing textile fibres which comprises contacting the fibre with an active solvent containing dissolved dye in admixture with the necessary amount of a bulking inert substantially immiscible solvent, the active solvent under the conditions of dyeing being liquid, a solvent for the dye, insoluble or only slightly soluble in the inert solvent, and in which the fixation affinity of the fibre for the dye is greater than that of the active solvent for the dye at the temperature required for fixation.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: September 7, 1982
    Assignee: Ciba-Geigy Corporation
    Inventors: James K. Skelly, David G. Evans, Barrie Broadbent
  • Image producing system
    Patent number: 4186243
    Abstract: An image producing system is provided, wherein an activator composition e.g. made up as a crayon or pencil, when contacted with paper substrate containing an azo color former yields an image by color change.
    Type: Grant
    Filed: February 11, 1977
    Date of Patent: January 29, 1980
    Assignee: CIBA-GEIGY Corporation
    Inventors: James H. Astbury, Barrie Broadbent