Patents Assigned to Colight, Inc.
  • 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
  • Microfiche duplicator
    Patent number: D275201
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: August 21, 1984
    Assignee: Colight, Inc.
    Inventors: Claudia L. Taylor, Allen A. Lawson
  • Integrating photometer
    Patent number: D285931
    Type: Grant
    Filed: February 3, 1984
    Date of Patent: September 30, 1986
    Assignees: Colight, Inc., Electronic Instrumentation & Technology
    Inventors: Joe T. May, Steven D. Hale
  • Integrating photometer
    Patent number: D286298
    Type: Grant
    Filed: February 3, 1984
    Date of Patent: October 21, 1986
    Assignees: Colight, Inc., Electronic Instrumentation & Technology
    Inventors: Joe T. May, Steven D. Hale