Patents by Inventor William Tredway

William Tredway 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).

  • Silicon based substrate with hafnium containing barrier layer
    Publication number: 20070111013
    Abstract: An article comprising a substrate containing silicon and a barrier layer which functions as an environmental barrier coating and, more particularly, a barrier layer which comprises hafnium silicate and, optionally, zirconium silicate and a method for forming the hafnium silicate as a barrier coating.
    Type: Application
    Filed: January 8, 2007
    Publication date: May 17, 2007
    Inventors: Tania Bhatia, John Smeggil, William Tredway, Wayde Schmidt, Vincent Nardone
  • Silicon based substrate with hafnium containing barrier layer
    Publication number: 20070065672
    Abstract: An article comprising a substrate containing silicon and a barrier layer which functions as an environmental barrier coating and, more particularly, a barrier layer which comprises hafnium silicate and, optionally, zirconium silicate and a method for forming the hafnium silicate as a barrier coating.
    Type: Application
    Filed: September 19, 2005
    Publication date: March 22, 2007
    Inventors: Tania Bhatia, John Smeggil, William Tredway, Wayde Schmidt, Vincent Nardone
  • Coating system for silicon based substrates
    Publication number: 20070014996
    Abstract: A bond coat system for silicon based substrates wherein a compliant layer having an elastic modulus of between 30 and 130 GPa is provided between the silicon based substrate and a silicon metal containing oxygen gettering layer.
    Type: Application
    Filed: May 23, 2005
    Publication date: January 18, 2007
    Inventors: Tania Bhatia, Wayde Schmidt, William Tredway, Venkata Vedula
  • Cryogenic bearings
    Publication number: 20060040097
    Abstract: The bearing system includes a first component having a first substrate and a first coating. The first coating includes a DLC layer and a DLN layer between the DLC layer and the substrate. A second component is in sliding engagement with the first component.
    Type: Application
    Filed: August 23, 2004
    Publication date: February 23, 2006
    Inventors: Clark Cooper, William Tredway, Roy Guile, Chris Rhemer, Alan Minick, Leonard Chapman