Patents by Inventor Robin A. L. Drew

Robin A. L. Drew 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).

  • Tantalum carbide composite materials
    Patent number: 5196273
    Abstract: A tantalum carbide composite material comprises a tantalum carbide preform infiltrated with a low melting temperature metal selected from aluminum, copper, various alloys of either aluminum or copper, gold and silver.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: March 23, 1993
    Assignee: Noranda Inc.
    Inventors: Peter Tsantrizos, Lakis T. Mavropoulos, Kartik Shanker, Robin A. L. Drew, Bruce Henshaw, Raynald Lachance
  • Annealing process control method and apparatus
    Patent number: 4595427
    Abstract: A method and an arrangement for following and controlling the progress of heat treatment of cold worked metals in an annealing furnace uses the changing electrical resistivity of the cold worked metal during the annealing process as a process control parameter. A sample of the cold worked metal is placed in a slave furnace along with a sample of the cold worked metal which has been previously annealed. The temperature of the slave furnace is controlled to follow and duplicate the temperature at any point of interest in the annealing furnace, and the differential resistivity between the two samples is measured to follow and control the progress of annealing.
    Type: Grant
    Filed: October 22, 1984
    Date of Patent: June 17, 1986
    Assignee: The Royal Institution for the Advancement of Learning (McGill University)
    Inventors: Robin A. L. Drew, Wilson B. Muir, William M. Williams