Patents by Inventor Peter G. Hanley

Peter G. Hanley 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).

  • Erasable system including marking surface and erasable ink composition
    Patent number: 5217255
    Abstract: An erasable system including an element having a porous marking surface and an erasable marking composition for applying markings to the porous marking surface. The marking composition comprises an aqueous dispersion of particles of film-forming polymeric materials and a colorant, and the marking composition provides an erasable, substantially water-insoluble coalesced residue on the marking surface.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: June 8, 1993
    Inventors: Nan J. Lin, Peter G. Hanley
  • Erasable system including marking surface and erasable ink composition
    Patent number: 4988123
    Abstract: An erasable system including a marking element providing a non-porous marking surface and an erasable marking composition for applying markings to the marking surface. The erasable marking composition comprises a film forming polymeric material and a colorant. Preferred marking compositions comprise an elastomeric film forming polymeric material.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: January 29, 1991
    Assignee: The Gillette Company
    Inventors: Nan J. Lin, Peter G. Hanley
  • Erasable system including marking surface and erasable ink composition
    Patent number: 4940628
    Abstract: An erasable system including a marking element providing a substantially non-porous marking surface and an erasable marking composition for applying markings to the marking surface. The erasable marking composition comprises a dispersion of a particulate film-forming polymeric material and a colorant and preferably also include a water soluble polymer.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: July 10, 1990
    Assignee: The Gillette Company
    Inventors: Nan J. Lin, Peter G. Hanley