Patents by Inventor Roy H. McCullagh

Roy H. McCullagh 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).

  • Apparatus for daylight color duplication
    Patent number: 5060118
    Abstract: An apparatus for "color mode switching," which enables duplication of daylight chromaticity for each color family. The present invention emits a selected spectral distribution of light which duplicates the effect of daylight, on a color-by-color basis. This effect is accomplished by a specific arrangement of specialized fluorescent and incandescent lamps which are switched (on/off) in a different pattern for each color family. The device has application anywhere color matching is required, including the after market for automobiles.
    Type: Grant
    Filed: April 6, 1989
    Date of Patent: October 22, 1991
    Assignee: Frank A. Arone
    Inventors: Richard J. Penrod, Roy H. McCullagh