Patents by Inventor Patrick W. Holmes

Patrick W. Holmes 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).

  • Method of forming inert anodes
    Patent number: 7323134
    Abstract: A method of making an inert anode (12?) for use in an electrochemical cell first provides a hollow shaped mold (12) where a metal mandrel (17?) having raised male threads (50) at its top diameter (52) is inserted into the mold (12) and a compressible powder (19, 21) added, then the powder is compressed to form recessed female grooves (70) matching the mandrel threads (50) where the mandrel (17?) is engaged and withdrawn along with the compressed powder inert anode after which the mandrel is rotated to unscrew it from the compressed powder and the compressed powder shape is then placed on a tray (27) and heated to sintering temperature.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: January 29, 2008
    Assignee: Alcoa, Inc.
    Inventors: J. Dean Latvaitis, Raymond Miller, Steven A. Czekaj, Patrick W. Holmes
  • Mandrel for forming inert anodes
    Publication number: 20040195735
    Abstract: A method of making an inert anode (12′) for use in an electrochemical cell first provides a hollow shaped mold (12) where a metal mandrel (17) having raised male threads (50) at its top diameter (52) is inserted into the mold (12) and a compressible powder (19, 21) added, then the powder is compressed to form recessed female grooves (70) matching the mandrel threads (50) where the mandrel (17′) is engaged and withdrawn along with the compressed powder inert anode after which the mandrel is rotated to unscrew it from the compressed powder and the compressed powder shape is then placed on a tray (27) and heated to sintering temperature.
    Type: Application
    Filed: April 2, 2003
    Publication date: October 7, 2004
    Inventors: J. Dean Latvaitis, Raymond Miller, Steven A. Czekaj, Patrick W. Holmes
  • Apparatus for producing composite cylinders
    Patent number: 5747073
    Abstract: Apparatus is disclosed for producing composite cylinders having cylinder walls comprised of two adjacent diverse layers of metal material which are bonded together by application of radial forces thereto and then sintered to complete the bonding process. Mechanical locking of the layers is achieved by grain interlocking between the two layers of metal material.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: May 5, 1998
    Assignee: TecSyn, Inc.
    Inventors: Bjorn Ola Alfons Pettersson, Patrick W. Holmes