Patents by Inventor Michael Gilbert Johnson

Michael Gilbert Johnson 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).

  • Publication number: 20210320298
    Abstract: The disclosure provides a plurality of particles. Each particle may include a material comprising 0.95 to 1.30 mole fraction Li, at least 0.60 and less than 1.00 mole fraction Co, up to 10,000 ppm Al, 1.90 to 2.10 mole fraction O, and up to 0.30 mole fraction M, where M is at least one element selected from B, Na, Mg, P, Ti, Ca, V, Cr, Fe, Mn, Ni, Cu, Zn, Al, Sc, Y, Ga, Zr, Ru, Mo, La, Si, Nb, Ge, In, Sn, Sb, Te, and Ce. Each particle may also include a surface composition comprising a mixture of LiF and a metal fluoride. An amount of fluorine (F) is greater than 0 and less than or equal to 5000 ppm. The metal fluoride comprises a material selected from the group consisting of AlF3, CaF2, MgF2, and LaF2. The surface composition may also include a metal oxide comprising a material selected from the group consisting of TiO2, MgO, La2O3, CaO, and Al2O3. An amount of the metal oxide is greater than 0 and less than or equal to 20000 ppm.
    Type: Application
    Filed: April 9, 2021
    Publication date: October 14, 2021
    Inventors: Hongli Dai, Huiming Wu, Chi-Kai Lin, Michael J. Erickson, Martin Bettge, Xiaoping Wang, Yan Li, Yanjie Cui, James A. Gilbert, Zhenzhen Yang, Anh D. Vu, Arthur Jeremy Kropf, Hakim H. Iddir, Christopher S. Johnson, John David Carter
  • Publication number: 20130336608
    Abstract: Bearing assemblies, such as for use with a turbine engine, are disclosed. An example the bearing assembly may include an outer ring comprising an oil drainage aperture defined therein; an inner ring disposed coaxially within the outer ring, the inner ring including an oil supply aperture defined therein; and a plurality of rolling elements engaged between the outer ring and the inner ring, wherein the plurality of rolling elements are constructed of a ceramic material.
    Type: Application
    Filed: March 6, 2013
    Publication date: December 19, 2013
    Applicant: General Electric Company
    Inventors: Jacob Patrick Miller, Bruce Alan Carter, Michael Gilbert Johnson, Gary Paul Moscarino, David William Pugh, Jonothan Allen Scheetz, Thomas DeWitt Woodrow
  • Patent number: 6966954
    Abstract: A roller bearing that provides ball and roller bearing elements comprised of M50 steel and M50NiL steel having surface hardnesses above 60 HRC, and in the range of 65-72 HRC. The hardness in the surface region is achieved by nitriding the surface to achieve a high hardness and extended life. This improvement is brought about by controlling the microstructure of the alloy by minimizing the formation of retained austenite. The material is tempered as required. The surface is then nitrided, but the nitriding operation is carefully controlled to avoid the formation of intergranular nitrides. Because of the method used to prevent the formation of intergranular nitrides, some carbon may be present to prevent the surface of the steel from becoming depleted of carbon. The hardening element in this nitro-carburizing operation is nitrogen, which forms iron nitride as Fe3N or Fe4N intragranularly.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: November 22, 2005
    Assignee: General Electric Comany
    Inventors: Mark Alan Rhoads, Michael Gilbert Johnson, Jonothan Allen Scheetz
  • Publication number: 20040079448
    Abstract: A roller bearing that provides ball and roller bearing elements comprised of M50 steel and M50NiL steel having surface hardnesses above 60 HRC, and in the range of 65-72 HRC. The hardness in the surface region is achieved by nitriding the surface to achieve a high hardness and extended life. This improvement is brought about by controlling the microstructure of the alloy by minimizing the formation of retained austenite. The material is tempered as required. The surface is then nitrided, but the nitriding operation is carefully controlled to avoid the formation of intergranular nitrides. Because of the method used to prevent the formation of intergranular nitrides, some carbon may be present to prevent the surface of the steel from becoming depleted of carbon. The hardening element in this nitro-carburizing operation is nitrogen, which forms iron nitride as Fe3N or Fe4N intragranularly.
    Type: Application
    Filed: October 24, 2002
    Publication date: April 29, 2004
    Applicant: General Electric
    Inventors: Mark Alan Rhoads, Michael Gilbert Johnson, Jonothan Allen Scheetz