Patents by Inventor Sung H. Yu

Sung H. Yu 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).

  • Chromia spray powders
    Patent number: 7012037
    Abstract: Particles particularly useful for thermal spraying a wear resistant coating on to a substrate comprise an essentially single phase crystalline structure comprising from 45 to 99% by weight of chromia and 55 to 1% by weight of alpha alumina.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: March 14, 2006
    Assignee: Saint-Gobain Ceramics and Plastics, Inc.
    Inventors: Sung H. Yu, Howard Wallar
  • Chromia spray powders and a process for making the same
    Patent number: 6774076
    Abstract: Particles particularly useful for thermal spraying a wear resistant coating on to a substrate comprise an essentially single phase crystalline structure comprising from 45 to 100% by weight of chromia and from 0 to 55% by weight of alpha alumina.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: August 10, 2004
    Assignee: Saint-Gobain Ceramics & Plastics, Inc.
    Inventors: Sung H. Yu, Howard Wallar
  • Chromia spray powders
    Publication number: 20030191009
    Abstract: Particles particularly useful for thermal spraying a wear resistant coating on to a substrate comprise an essentially single phase crystalline structure comprising from 45 to 99% by weight of chromia and 55 to 1% by weight of alpha alumina.
    Type: Application
    Filed: April 8, 2002
    Publication date: October 9, 2003
    Inventors: Sung H. Yu, Howard Wallar
  • Chromia spray powders and a process for making the same
    Publication number: 20030191010
    Abstract: Particles particularly useful for thermal spraying a wear resistant coating on to a substrate comprise an essentially single phase crystalline structure comprising from 45 to 100% by weight of chromia and from 0 to 55% by weight of alpha alumina.
    Type: Application
    Filed: September 3, 2002
    Publication date: October 9, 2003
    Inventors: Sung H. Yu, Howard Wallar
  • Ceramic shell thermal spray powders and methods of use thereof
    Patent number: 6602556
    Abstract: Plasma spraying a substrate using particles having a ceramic coating on a combustible core, which may optionally be burned out before spraying, gives a potential for a thicker more conformable protective coat.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: August 5, 2003
    Assignee: Saint-Gobain Abrasives Technology Company
    Inventor: Sung H. Yu
  • CERAMIC SHELL THERMAL SPRAY POWDERS AND METHODS OF USE THEREOF
    Publication number: 20030129320
    Abstract: Plasma spraying a substrate using particles having a ceramic coating on a combustible core, which may optionally be burned out before spraying, gives a potential for a thicker more conformable protective coat.
    Type: Application
    Filed: August 1, 2002
    Publication date: July 10, 2003
    Inventor: Sung H. Yu
  • Thermal spray powder process
    Patent number: 6410470
    Abstract: It is found that calcining chromium oxide powders having a particle size component smaller than 10 microns reduces the volume proportion of smaller particles and increases the general uniformity of particle sizes in the distribution and the roundness of the particles.
    Type: Grant
    Filed: April 24, 2000
    Date of Patent: June 25, 2002
    Assignee: Saint-Gobain Industrial Ceramics, Inc.
    Inventors: Howard Wallar, Robert F. Quinlivan, Sung H. Yu