Patents by Inventor Malcolm G. Ross

Malcolm G. Ross 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).

  • Integrating photometer
    Patent number: 4644165
    Abstract: An integrating photometer for measuring total exposures to ultraviolet radiation. The circuit for the photometer includes a threshold limiter to suppress operation of the integrator until the illumination level exceeds a predetermined threshold. A power saving circuit turns the photometer off when no illumination is received during a predetermined time interval.
    Type: Grant
    Filed: February 22, 1983
    Date of Patent: February 17, 1987
    Assignee: Colight, Inc.
    Inventors: Malcolm G. Ross, Joe T. May, Steven D. Hale