Patents by Inventor Yucong Wang

Yucong Wang 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).

  • Method for increasing wear resistance in an engine cylinder bore and improved automotive engine
    Patent number: 6328026
    Abstract: This invention is directed to a method for enhancing the wear resistance of an iron engine cylinder bore comprising laser alloying of the cylinder bore with selected precursors and honing the cylinder bore to a preselected dimension. The present invention is particularly well suited for enhancing the resistance to wear caused by the corrosion caused by automotive ethanol fuel. The present invention is also directed toward an improved automotive engine comprising alloyed cylinder bores with enhanced wear resistance characteristics.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: December 11, 2001
    Assignee: The University of Tennessee Research Corporation
    Inventors: Yucong Wang, Barry J. Brandt, John Brice Bible, Narendra B. Dahotre, John A. Hopkins, Mary Helen McCay, Thurman Dwayne McCay, Fredrick A. Schwartz
  • Ceramic coated exhaust manifold and method
    Patent number: 5937643
    Abstract: A cast iron exhaust manifold having an inside surface covered with a ceramic coating comprising, by weight, about 30% to about 70% unfused silica, about 5% to about 30% magnesia, about 5% to about 20% alumina and about 3% to about 10% sodium oxide. The coating will preferably be built up in multiple layers at least one of which is relatively porous and another is relatively dense resulting from vacuum degassing of the slurry used to deposit the coating.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: August 17, 1999
    Assignee: General Motors Corporation
    Inventor: Yucong Wang
  • Aluminum bore engine having wear and scuff-resistant aluminum piston
    Patent number: 5884600
    Abstract: A reciprocating engine having an aluminum engine block, and an aluminum piston wherein the piston's skirt has a hard anodized first layer directly on the aluminum and a composite polymer coating atop the hard anodized layer.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: March 23, 1999
    Assignee: General Motors Corporation
    Inventors: Yucong Wang, Peter Vernia, Simon Chin-Yu Tung
  • Method of making a ceramic coated exhaust manifold and method
    Patent number: 5718046
    Abstract: A cast iron exhaust manifold having an inside surface covered with a ceramic coating comprising, by weight, about 30% to about 70% unfused silica, about 5% to about 30% magnesia, about 5% to about 20% alumina and about 3% to about 10% sodium oxide. The coating will preferably be built up in multiple layers at least one of which is relatively porous and another is relatively dense resulting from vacuum degassing of the slurry used to deposit the coating.
    Type: Grant
    Filed: December 11, 1995
    Date of Patent: February 17, 1998
    Assignee: General Motors Corporation
    Inventor: Yucong Wang
  • Coated permanent mold having textured undersurface
    Patent number: 5690759
    Abstract: Mold for permanent mold casting having a RPVD ceramic coating atop a mold surface which is textured to provide a specific microtopography suitable for eliminating misruns in the casting.
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: November 25, 1997
    Assignee: General Motors Corporation
    Inventor: Yucong Wang
  • Shot sleeve and method of making
    Patent number: 5611477
    Abstract: A pressure casting machine having a shot sleeve including a highly thermally conductive metal tube having an erosion-resistant and wear-resistant cermet interatomically bonded to the inside surface of the tube may be made by using an explosive compaction and bonding process.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: March 18, 1997
    Assignee: General Motors Corporation
    Inventor: Yucong Wang
  • Non destructive adhesion testing
    Patent number: 5454260
    Abstract: Non destructive adhesion testing of coatings to substrates. A supersonic jet of water is impinged against the coating. The impingement intensity of the jet is set at a predetermined "failure intensity" determined by testing of a sample having a minimum acceptable level of adhesion. Parts passing through the supersonic jet unscratched pass the test. Parts whose coatings debond when impacted by the jet fail the test.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: October 3, 1995
    Assignee: General Motors Corporation
    Inventor: Yucong Wang
  • Metallurgical bonding of metals and/or ceramics
    Patent number: 5429173
    Abstract: A solid material is bonded to a metal cast thereagainst by means of a metallurgical diffusion bond. The solid material is coated with a latent exoergic coating which coating reacts exothermically to produce intermetallic phases at the surface of the solid when the metal is cast thereagainst. The heat generated by the intermetallic-phase-formation reaction promotes the diffusion bond.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: July 4, 1995
    Assignee: General Motors Corporation
    Inventors: Yucong Wang, Dennis M. Meyers, Paul H. Mikkola