Patents by Inventor Christopher P. Doube

Christopher P. Doube 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).

  • Patent number: 5266609
    Abstract: The invention relates to an improved, castable, synthetic resin material, suitable for use in dental and medical restorations, as a replacement for dental enamel and hydroxyapatite bone material. This material is also useful for electrical insulation. More specifically, the invention provides a filled reinforced resin matrix comprising a castable resin; from 5 to 50% vol of fibers of 50 .mu.m or less diameter; from 10 to 35% vol of a first particulate filler having a particle size range of 0.1 to 50 .mu.m; and from 5 to 25% vol of a second particulate filler having an ultimate particle size range of 10 to 100 nm.
    Type: Grant
    Filed: July 17, 1992
    Date of Patent: November 30, 1993
    Inventors: Neil R. Hall, Christopher P. Doube