Patents by Inventor James Kent Knapp

James Kent Knapp 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).

  • Polishing composition and method
    Patent number: 6454821
    Abstract: The polishing slurry includes by weight percent, 0.1 to 50 metal oxy-acid accelerator, 0.5 to 50 cerium oxide abrasive particles and balance water. The metal oxy-acid accelerator is formed with a metal selected from the group consisting of chromium, lanthanum and rare earth metals 59 to 71, manganese, molybdenum, niobium, osmium, rhenium, ruthenium, titanium, tungsten, vanadium, yttrium and zirconium.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: September 24, 2002
    Assignee: Praxair S. T. Technology, Inc.
    Inventors: Faraz Abbasi, Phil O, James Kent Knapp, Lei Liu
  • Hybrid polishing slurry
    Patent number: 6261476
    Abstract: A hybrid slurry mixture that polishes substrates' surfaces. The hybrid slurry includes, by weight percent, 1 to 30 primary polishing particles, 1 to 50 dispersed colloidal particles, 1 to 40 oxidizer and balance water. The primary polishing particles are metal compounds selected from the group consisting of oxides, nitrides, carbides and borides. The primary polishing particles have a particle size from about 0.1 to 2 &mgr;m mean diameter. The dispersed colloidal particles are at least one oxide selected from the group consisting of alumina and silica. The dispersed colloidal particles have a particle size from about 2 to 500 nm mean diameter.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: July 17, 2001
    Assignee: Praxair S. T. Technology, Inc.
    Inventors: Doris Kwok, James Kent Knapp
  • Polishing slurry
    Patent number: 6162268
    Abstract: The invention provides a mixture for polishing surfaces. The mixture includes polishing particles having an average size of less than 10 .mu.m and water. It also includes an accelerator for chemically attacking a surface and a starch for reducing vibration of polishing machines.
    Type: Grant
    Filed: May 3, 1999
    Date of Patent: December 19, 2000
    Assignee: Praxair S. T. Technology, Inc.
    Inventors: James Kent Knapp, Doris Kwok
  • Process for producing an oxide dispersed MCrAlY-based coating
    Patent number: 5741556
    Abstract: A thermal spray process for producing a MCrAlY-based coating wherein M is selected from the group consisting of iron, cobalt, nickel and mixtures thereof and wherein the oxygen in the fuel-oxidant mixture of the thermal spray process converts a substantial portion of the yttrium component to Y.sub.2 O.sub.3, a minor portion of the aluminum component to Al.sub.2 O.sub.3, and the Y.sub.2 O.sub.3 and Al.sub.2 O.sub.3 are present in an amount of less than 15 volume percent of the coating.
    Type: Grant
    Filed: April 5, 1996
    Date of Patent: April 21, 1998
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Thomas Alan Taylor, James Kent Knapp
  • Process for producing carbide particles dispersed in a MCrAlY-based coating
    Patent number: 5652028
    Abstract: A thermal spray process for producing a MCrAlY-based coating wherein M is selected from the group consisting of iron, cobalt, nickel and mixtures thereof and wherein the carbon in the fuel of the thermal spray process converts between 30 to 80 percent by weight of the chromium component in the coating to chromium carbide.
    Type: Grant
    Filed: April 9, 1996
    Date of Patent: July 29, 1997
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Thomas Alan Taylor, James Kent Knapp