Patents by Inventor Jean M. Quets

Jean M. Quets 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).

  • High performance overlay for rock drilling bits
    Patent number: 5535838
    Abstract: A method to apply a high performance overlay to a metal substrate of a rock bit to render the substrate surfaces of the rock bit more resistant to erosion, corrosion and substrate cracking while performing in an earthen formation is described. The method comprises the steps of bombarding the surfaces with a thermal spray of entrained fine particles of a cermet based composition at a velocity in excess of 3,000 ft/per sec. The resultant coating of the cermet based composition has a tensile bond strength in excess of 20,000 psi that results in an increase of the strain to fracture of the rock bit surface. The hard overlay has a resistance to severe service environments of high strain and shock tolerance as well as a higher load carrying capacity.
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: July 16, 1996
    Assignee: Smith International, Inc.
    Inventors: Madapusi K. Keshavan, Kuttaripalayam T. Kembaiyan, Wayne C. Quantz, Robert C. Tucker, Jr., Melvin D. Mendenhall, Jean M. Quets
  • Duplex coatings for various substrates
    Patent number: 5223332
    Abstract: A duplex coating for substrates that comprises an undercoat of tungsten carbide-cobalt having a strain-to-fracture of greater than 4.3.times.10.sup.-3 inch per inch and a top coat of a ceramic material such as alumina in which the ratio of the thickness of the top coat to the undercoat is from 6:1 to 1:3.
    Type: Grant
    Filed: May 31, 1990
    Date of Patent: June 29, 1993
    Assignee: Praxair S.T. Technology, Inc.
    Inventor: Jean M. Quets
  • Process for producing chromium carbide-nickel base age hardenable alloy coatings and coated articles so produced
    Patent number: 5137422
    Abstract: An improved erosion resistant coating for a gas path component of a turbo machine which comprises the thermal spraying of a chromium carbide, such as Cr.sub.3 C.sub.2, and an age hardenable nickel base alloy, such as Inconel 718, onto the gas path component and then, preferably, heat treating the deposited coating to harden the coating.
    Type: Grant
    Filed: October 18, 1990
    Date of Patent: August 11, 1992
    Assignee: Union Carbide Coatings Service Technology Corporation
    Inventors: Marianne O. Price, John E. Jackson, Jean M. Quets
  • Tungsten carbide-cobalt coatings for various articles
    Patent number: 4826734
    Abstract: The invention relates to a coated article comprising a substrate coated with a tungsten carbide-cobalt layer having a strain-to-fracture greater than 4.3.times.10.sup.-3 inch per inch and a Vickers hardness of greater than about 875 HV.sub.0.3.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: May 2, 1989
    Assignee: Union Carbide Corporation
    Inventors: John E. Jackson, Robert W. Meyerhoff, Marianne O. Price, Jean M. Quets
  • Wear and corrosion resistant coatings and method for producing the same
    Patent number: 4626477
    Abstract: A coating composition applied to a substrate by a thermal spray process which consists essentially of from about 6.5 to about 9.0 weight percent cobalt, from about 2.0 to about 4.0 weight percent chromium, from about 3.0 to about 4.0 weight percent carbon and the balance tungsten.
    Type: Grant
    Filed: February 20, 1986
    Date of Patent: December 2, 1986
    Assignee: Union Carbide Corporation
    Inventors: John E. Jackson, Thomas A. Adler, Jean M. Quets
  • High strength, wear and corrosion resistant coatings and method for producing the same
    Patent number: 4588608
    Abstract: A coating composition applied to a substrate by a thermal spray process which consists essentially of from about 11.0 to about 18.0 weight percent cobalt, from about 2.0 to about 6.0 weight percent chromium, from about 3.0 to about 4.5 weight percent carbon and the balance tungsten.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: May 13, 1986
    Assignee: Union Carbide Corporation
    Inventors: John E. Jackson, Thomas A. Adler, Jean M. Quets, Robert C. Tucker, Jr.
  • High strength, wear and corrosion resistant coatings
    Patent number: 4519840
    Abstract: A coating composition applied to a substrate by a thermal spray process which consists essentially of from about 11.0 to about 18.0 weight percent cobalt, from about 2.0 to about 6.0 weight percent chromium, from about 3.0 to about 4.5 weight percent carbon and the balance tungsten.
    Type: Grant
    Filed: October 28, 1983
    Date of Patent: May 28, 1985
    Assignee: Union Carbide Corporation
    Inventors: John E. Jackson, Thomas A. Adler, Jean M. Quets, Robert C. Tucker, Jr.