Patents Assigned to Foresight Enterprises, Incorporated
  • Method of controlling the temperature of an electrically heated element
    Patent number: 4377738
    Abstract: The temperature of an electrically heated element is controlled by applying a current until the element reaches a threshold temperature, preferably determined by the expanded length of the elements, and then applying a predetermined voltage-current condition for a selected period of time. This is followed by repeated applications of such voltage-current conditions in response to the cooling of the heating element back to the threshold temperature.
    Type: Grant
    Filed: February 8, 1979
    Date of Patent: March 22, 1983
    Assignee: Foresight Enterprises, Incorporated
    Inventor: Bernard J. Berg
  • Control system for the electrolytic recovery of silver from photographic fixing solution
    Patent number: 4263108
    Abstract: Plating current in a silver-recovery process is controlled as a function of the cell voltage of the system taken in the absence of plating current, and held as a control determinant. The control is modified to produce certain characteristics at low silver concentration to further reduce sulfiding.
    Type: Grant
    Filed: March 27, 1980
    Date of Patent: April 21, 1981
    Assignee: Foresight Enterprises, Incorporated
    Inventors: Bernard J. Berg, Darrell T. Thompson