Patents by Inventor David E. Valadez

David E. Valadez 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).

  • Radiation hardened timer
    Patent number: 6545551
    Abstract: A radiation hardened timer that keeps accurate time before, during and after passage through a radiation-containing environment, the radiation hardened timer having a first oscillator that is stable in a radiation-free environment, a second oscillator that is stable in a radiation-containing environment, and digital circuitry that interfaces the two oscillators.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: April 8, 2003
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Daniel L. Price, David E. Valadez, Clyde Mark Miller, Jeff R. Johann