Patents by Inventor Donald M. Gibson

Donald M. Gibson 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 for application to unglazed paper surfaces
    Patent number: 4180407
    Abstract: Ink which is especially suitable for application to or for drawing lines on unglazed or porous surfaces is an aqueous suspension of an opaque, water-insoluble powdered pigment, containing also a binder which forms a flexible film upon drying, and a small amount of surfactant and, if desired, a fungicide.
    Type: Grant
    Filed: September 15, 1978
    Date of Patent: December 25, 1979
    Inventors: Donald M. Gibson, Donald C. Pierce