Patents by Inventor William J. Bishop

William J. Bishop 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).

  • Manufacture of fine-grained electroplating anodes
    Patent number: 6627055
    Abstract: A continuously cast copper ingot is made by a procedure in which turbulence is imparted to the metal/solid interface during the casting operation. The ingot is then hot worked to form a billet having a smaller average grain size and a larger diameter than possible in the past. The billet is especially useful for making electroplating anodes used in the damascene process for making copper interconnects in silicon wafers.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: September 30, 2003
    Assignee: Brush Wellman, Inc.
    Inventors: William J. Bishop, David Krus, Jr.
  • Manufacture of fine-grained electroplating anodes
    Publication number: 20030000604
    Abstract: A continuously cast copper ingot is made by a procedure in which turbulence is imparted to the metal/solid interface during the casting operation. The ingot is then hot worked to form a billet having a smaller average grain size and a larger diameter than possible in the past. The billet is especially useful for making electroplating anodes used in the damascene process for making copper interconnects in silicon wafers.
    Type: Application
    Filed: July 2, 2001
    Publication date: January 2, 2003
    Inventors: William J. Bishop, David Krus
  • Rapid quench of large selection precipitation hardenable alloys
    Patent number: 6387195
    Abstract: Large sections of solution annealed, precipitation hardenable alloys which are resistant to internal cracking yet fully hardenable can be produced if, during rapid quenching, the temperature of the section is allowed to stabilize immediately above the alloy's solvus temperature before the section is rapidly quenched. Preferably, the temperature of the section is allowed to stabilize a second time, this time at an elevated temperature not so high that significant phase changes occur, before the section is cooled to ambient.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: May 14, 2002
    Assignee: Brush Wellman, Inc.
    Inventors: William J. Bishop, Noel M. Brady, Walter R. Cribb, Anatoly A. Offengenden