Patents by Inventor William I. Ferree, Jr.

William I. Ferree, Jr. 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 writing medium composition
    Patent number: 4297260
    Abstract: An erasable writing medium composition suitable for use in porous tip and ballpoint pens is provided. The erasable writing medium comprises an emulsion having a continuous water phase and discontinuous phase that comprises a styrene-butadiene latex copolymer. The colorant or dye is dissolved in the continuous phase and also is believed to form a surface layer on the discontinuous phase particles. Upon drying, the colorant is captured by the copolymer thereby preventing the colorant from being absorbed by the writing surface.
    Type: Grant
    Filed: November 19, 1979
    Date of Patent: October 27, 1981
    Assignee: Liquid Paper Corporation
    Inventors: William I. Ferree, Jr., Giao V. Nguyen
  • Thermally activated ink and transfer method
    Patent number: 4251276
    Abstract: A thermally activated ink and a thermally activated transfer ribbon, comprising a polymer, oil and oil-gelling agent, are provided. The ink may form a coating on a substrate, such as a ribbon, for use in conjunction with a thermal printer or a nonimpact typewriter, for example, for generating characters on ordinary paper. A method is also provided for generating characters on ordinary paper with a thermal print head.
    Type: Grant
    Filed: September 5, 1979
    Date of Patent: February 17, 1981
    Assignee: Liquid Paper Corporation
    Inventors: William I. Ferree, Jr., Giao V. Nguyen