Patents by Inventor Richard E. Fox

Richard E. Fox 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).

  • Reusable projection transparency
    Patent number: 4423116
    Abstract: A thermally-responsive transparent film is disclosed which comprises certain chromogenic material and certain color developer material. With this film marks are developed in response to the application of heat to form an image. These images can be erased by the action of certain liquids or vapors. The imaged and erased states are fixed under a range of environmental conditions. This film finds particular utility as a reusable projection transparency.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: December 27, 1983
    Assignee: Appleton Papers Inc.
    Inventor: Richard E. Fox
  • Dielectric record material
    Patent number: 4375492
    Abstract: A reactive dielectric record material is disclosed which comprises certain chromogenic material and certain phenolic material. This record material produces images by means of a dielectric process wherein two color-forming agents contained within a reactive image-bearing surface are brought into reactive, color-producing contact by means of colorless toner material.
    Type: Grant
    Filed: May 22, 1981
    Date of Patent: March 1, 1983
    Assignee: Appleton Papers Inc.
    Inventor: Richard E. Fox