Patents by Inventor Barry J. McMahon

Barry J. McMahon 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).

  • Granulation of pigments
    Patent number: 4264552
    Abstract: The present invention provides a process for producing a substantially dry, low dusting, free-flowing granular pigment composition, comprising contacting a fluidized bed of pigment, a granulating assistant and water, and removing granules so obtained. Preferred methods include:(a) Spraying the granulating assistant and water on to the fluidized bed of pigment; and(ii) Incorporating all or part of the granulating assistant into the pigment prior to fluidization and spraying with water, or water and the remaining granulating assistant.
    Type: Grant
    Filed: October 11, 1978
    Date of Patent: April 28, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Barry J. McMahon, Christopher Newton