Patents by Inventor Robert Ernest LaRoche

Robert Ernest LaRoche 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).

  • Saturation-controlled loop current regulator
    Patent number: 10082784
    Abstract: A process transmitter includes device circuitry that generates values that are to be conveyed on a current loop. A series control transistor is in series between the current loop and the device circuitry and a saturation prevention circuit prevents the series control transistor from entering saturation.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: September 25, 2018
    Assignee: ROSEMOUNT INC.
    Inventors: Clarence Edward Holmstadt, Robert Ernest LaRoche, Steven J. McCoy
  • SATURATION-CONTROLLED LOOP CURRENT REGULATOR
    Publication number: 20160291579
    Abstract: A process transmitter includes device circuitry that generates values that are to be conveyed on a current loop. A series control transistor is in series between the current loop and the device circuitry and a saturation prevention circuit prevents the series control transistor from entering saturation.
    Type: Application
    Filed: March 30, 2015
    Publication date: October 6, 2016
    Inventors: Clarence Edward Holmstadt, Robert Ernest LaRoche, Steven J. McCoy