Patents by Inventor Roland W. Porth

Roland W. Porth 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).

  • Slot coater device for applying developer to film for electronic film development
    Patent number: 6443639
    Abstract: A slot coater device is provided for applying a processing solution, such as developer, to film during film development. The slot coater includes a housing having an opening for dispensing the processing solution, a reservoir within the housing adapted to receive a predetermined amount of the processing solution, and a channel for delivering the processing solution from the reservoir to the opening.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: September 3, 2002
    Assignee: Applied Science Fiction, Inc.
    Inventors: Michael R. Thering, George G. Mooty, Richard A. Coleman, Roland W. Porth, Robert S. Young, Jr., Leland A. Lester
  • Method and system for point source illumination and detection in digital film processing
    Publication number: 20020051255
    Abstract: One aspect of the invention is a system for digital film processing. A point light source, such as a laser, directs light onto film coated with a processing solution. Light from the film is measured to produce sensor data that corresponds to the colors in the film. The sensor data is used to construct a digital image corresponding to an image recorded on the film. Another aspect of the invention is a shaped collector that focuses light from the film to a focal point within the shaped collector.
    Type: Application
    Filed: December 21, 2000
    Publication date: May 2, 2002
    Inventors: G. Gregory Mooty, Roland W. Porth, Dung T. Duong
  • Document reproduction device utilizing a selective color illuminator
    Patent number: 4519703
    Abstract: A selective color copyability illuminator includes a pair of lamps having complementary spectral emission. The ratio of the lamp outputs are adjustable to enhance a first color of an original to be copied while suppressing the second color. The power input to the lamps is also continually adjustable to maintain a desired exposure level at an imaging plane. In a preferred embodiment, a dichroic reflector is utilized with each lamp to enhance system efficiency.
    Type: Grant
    Filed: July 15, 1983
    Date of Patent: May 28, 1985
    Assignee: Xerox Corporation
    Inventors: Richard F. Lehman, Roland W. Porth, Lawrence J. Mason