Patents by Inventor Richard A. Holt

Richard A. Holt 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).

  • Low in reactor creep ZR-base alloy tubes
    Patent number: 4452648
    Abstract: A process for fabricating tubes from a quaternary 3.5% Sn, 1% Mo, 1% Nb balance Zr alloy by hot extrusion, cold working and heat treatment so that the tubes have small grains that have low dislocation densities. The tubes are superior to the standard cold worked Zr-2.5 wt % Nb tubes because during service in CANDU-PHW reactors they (a) have lower axial elongation and diametral expansion and (b) the hydrides are less susceptible to reorientation from the circumferential-axial plane into the radial-axial plane.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: June 5, 1984
    Assignee: Atomic Energy of Canada Limited
    Inventors: Brian A. Cheadle, Richard A. Holt
  • Earring clearance telephone handset earpiece or similar article
    Patent number: D320798
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: October 15, 1991
    Inventor: Richard A. Holt
  • Earring clearance telephone handset earpiece or similar article
    Patent number: D320799
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: October 15, 1991
    Inventor: Richard A. Holt