Patents by Inventor Darrell D. Sell

Darrell D. Sell 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).

  • Laser control circuit
    Patent number: RE31969
    Abstract: A control circuit for an injection laser includes a driver circuit which applies a driving current to the laser in response to an electrical modulating signal. A prebias circuit applies a prebias current to the laser in response to the difference between a signal derived from the electrical modulating signal and a signal derived from the laser light output.
    Type: Grant
    Filed: June 4, 1982
    Date of Patent: August 13, 1985
    Assignee: AT&T Bell Laboratories
    Inventor: Darrell D. Sell