Patents by Inventor Cong Yue Qiao

Cong Yue Qiao 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).

  • Iron-based alloy for internal combustion engine valve seat inserts and the like
    Publication number: 20030103860
    Abstract: An iron-based corrosion resistant and wear resistant alloy is addressed. The alloy contains (in weight percent) 1.1-1.4% carbon, 11-14.25% chromium, 4.75-6.25% molybdenum, 3.5-4.5% tungsten, 0-3% cobalt, 1.5-2.5% niobium, 1-1.75% vanadium, 0-2.5% copper, up to 1.0% silicon, up to 0.8% nickel, up to 0.6% manganese, and the balance iron. The alloy is suitable for use in valve seat insert applications.
    Type: Application
    Filed: August 15, 2002
    Publication date: June 5, 2003
    Inventor: Cong Yue Qiao
  • Surface treatment of prefinished valve seat inserts
    Patent number: 6519847
    Abstract: A method of manufacturing surface treated, prefinished valve seat inserts. The method entails forming the valve seat insert, precision machining the valve seat insert to precise tolerances so that the valve seat insert can be installed in one of the cylinder head and engine block without the need for additional seat machining and treating the valve seat insert with a wear resistant treatment prior to inserting the valve seat insert into on of the cylinder head and engine block.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: February 18, 2003
    Assignee: L. E. Jones Company
    Inventors: Todd A. Trudeau, Daniel W. Bancroft, Cong Yue Qiao, Douglas W. Dooley
  • Nickel based alloys for internal combustion engine valve seat inserts, and the like
    Patent number: 6482275
    Abstract: A nickel based alloy is provided which includes, in weight percentage, carbon from about 2 to about 3; chromium from about 30 to about 40; tungsten from about 12 to about 18; iron from about 3.5 to about 8.5; molybdenum from about 1 to about 8; manganese up to about 0.5; silicon up to about 1.0; and the balance nickel and incidental impurities. The alloy is useful for internal combustion engine valve seat inserts and the like.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: November 19, 2002
    Assignee: L. E. Jones Company
    Inventor: Cong Yue Qiao
  • Iron-based alloy for internal combustion engine valve seat inserts
    Patent number: 6436338
    Abstract: An iron-based corrosion resistant and wear resistant alloy is addressed. The alloy contains (in weight percent) 1.1-1.4% carbon, 11-14.25% chromium, 4.75-6.25% molybdenum, 3.5-4.5% tungsten, 0-3% cobalt, 1.5-2.5% niobium, 1-1.75% vanadium, 0-2.5% copper, up to 1.0% silicon, up to 0.8% nickel, up to 0.6% manganese, and the balance iron. The alloy is suitable for use in valve seat insert applications.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: August 20, 2002
    Assignee: L. E. Jones Company
    Inventor: Cong Yue Qiao