Patents by Inventor Frederick J. Otto

Frederick J. Otto 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).

  • Carbo-nitriding process for martensitic stainless steel and stainless steel article having improved corrosion resistance
    Patent number: 11667999
    Abstract: A method for producing a case-hardened martensitic stainless steel article includes: providing an article comprised, at least in part, of a martensitic stainless steel, carburizing the article within a temperature range of 1625° F.-1680° F. (885° C.-916° C.), and then carbo-nitriding the article within a temperature range of 1575° F.-1625° F. (857° C.-885° C.). An article, such as a bearing ring, comprising such a case-hardened martensitic stainless steel is also disclosed.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: June 6, 2023
    Assignees: UES INC., MIDWEST THERMAL-VAC INC., AKTIEBOLAGET SKF
    Inventors: Hitesh K. Trivedi, Frederick J. Otto, Timothy W. Piazza, Bryan A. McCoy, Rabi S. Bhattacharya
  • CARBO-NITRIDING PROCESS FOR MARTENSITIC STAINLESS STEEL AND STAINLESS STEEL ARTICLE HAVING IMPROVED CORROSION RESISTANCE
    Publication number: 20180320262
    Abstract: A method for producing a case-hardened martensitic stainless steel article includes: providing an article comprised, at least in part, of a martensitic stainless steel, carburizing the article within a temperature range of 1625° F.-1680° F. (885° C.-916° C.), and then carbo-nitriding the article within a temperature range of 1575° F.-1625° F. (857° C.-885° C.). An article, such as a bearing ring, comprising such a case-hardened martensitic stainless steel is also disclosed.
    Type: Application
    Filed: July 19, 2018
    Publication date: November 8, 2018
    Inventors: Hitesh K. Trivedi, Frederick J. Otto, Timothy W. Piazza, Bryan A. McCoy, Rabi S. Bhattacharya
  • Carbo-nitriding process for martensitic stainless steel and stainless steel article having improved corrosion resistance
    Patent number: 10053763
    Abstract: A method for producing a case-hardened martensitic stainless steel article includes: providing an article comprised, at least in part, of a martensitic stainless steel, carburizing the article within a temperature range of 1625° F.-1680° F. (885° C.-916° C.), and then carbo-nitriding the article within a temperature range of 1575° F.-1625° F. (857° C.-885° C.). An article, such as a bearing ring, comprising such a case-hardened martensitic stainless steel is also disclosed.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: August 21, 2018
    Assignees: AKTIEBOLAGET SKF, MIDWEST THERMAL-VAC.INC., UES INC.
    Inventors: Hitesh K. Trivedi, Frederick J. Otto, Timothy W. Piazza, Bryan A. McCoy, Rabi S. Bhattacharya
  • CARBO-NITRIDING PROCESS FOR MARTENSITIC STAINLESS STEEL AND STAINLESS STEEL ARTICLE HAVING IMPROVED CORROSION RESISTANCE
    Publication number: 20140305548
    Abstract: A method for producing a case-hardened martensitic stainless steel article includes: providing an article comprised, at least in part, of a martensitic stainless steel, carburizing the article within a temperature range of 1625° F.-1680° F. (885° C.-916° C.), and then carbo-nitriding the article within a temperature range of 1575° F.-1625° F. (857° C.-885° C.). An article, such as a bearing ring, comprising such a case-hardened martensitic stainless steel is also disclosed.
    Type: Application
    Filed: May 31, 2012
    Publication date: October 16, 2014
    Applicants: AKTIEBOLAGET SKF, MIDWEST THERMAL-VAC INC., UES INC.
    Inventors: Hitesh K. Trivedi, Frederick J. Otto, Timothy W. Piazza, Bryan A. McCoy, Rabi S. Bhattacharya