Patents by Inventor John C. Bowman

John C. Bowman 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: 6552783
    Abstract: An optical system for use in an inspection system is described. The optical system includes an imaging system which may be provided as a multi-spectral band pass image recording system and a lighting system which includes at least one coaxial light and at least one side light to provide spectral discrimination and to provide contrast between a first surface made from a first material and a second surface made from a second different material.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: April 22, 2003
    Assignee: Teradyne, Inc.
    Inventors: Peter E. Schmidt, Pamela R. Lipson, John C. Bowman
  • Patent number: 5923380
    Abstract: The present invention is useful in taking a visible light image for identification and other purposes without the requirement of a photobooth, regardless of the background of the visible light image. The original background of the visible light image is replaced with a preselected background. Two IR images with different intensities of IR illumination in the foreground and background regions of the scene, respectively, are compared to produce a difference image of light intensity differences between corresponding pixels of the two images. A binarized image is generated by binarizing the difference image with respect to a predetermined threshold value .theta.. A connectivity constraint is used to generate a binary mask from the binarized image, then a gray-scale mask is produced by multiplying the binary mask times a preselected modulation function of the difference image. Warping the gray-scale mask produces a transformed mask.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: July 13, 1999
    Assignee: Polaroid Corporation
    Inventors: Yibing Yang, John C. Bowman, Ibrahim Hajjahmad
  • Patent number: 4221428
    Abstract: The disclosure relates to a convertible piece of furniture which may be made into a chair or a bed. The convertible chair and bed has an arm section hingedly secured to a seat section and carrying a latch bracket. A back rest is hinged to the rear of the seat section having a pedestal pivotally secured to the rear of the back rest which support the back rest in a generally horizontal position in the extended bed position. Studs project laterally from the pedestal in the chair position and are engageable in the latch bracket in the chair position. The convertible chair and bed may be incorporated in various styles of furniture and may be provided with a fixed, swivel or rocking base.
    Type: Grant
    Filed: March 20, 1979
    Date of Patent: September 9, 1980
    Inventors: John C. Bowman, Terry K. Bowman