Patents by Inventor Shougo Shimizu

Shougo Shimizu 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).

  • Patent number: 9206490
    Abstract: An outer ring, an inner ring, and a ball, each of which is a bearing part, are made of a quench-hardened steel containing not less than 0.90 mass % and not more than 1.05 mass % of carbon, not less than 0.15 mass % and not more than 0.35 mass % of silicon, not less than 0.01 mass % and not more than 0.50 mass % of manganese, and not less than 1.30 mass % and not more than 1.65 mass % of chromium with the rest consisting of an impurity. A contact surface thereof with another part has a nitrogen concentration of not less than 0.25 mass %. A remaining austenite amount in the contact surface is not less than 6 volume % and not more than 12 volume %.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: December 8, 2015
    Assignee: NTN CORPORATION
    Inventors: Takashi Ueno, Chikara Ohki, Daisuke Sato, Kyouhei Kageyama, Shougo Shimizu
  • Publication number: 20140348454
    Abstract: An outer ring, an inner ring, and a ball, each of which is a bearing part, are made of a quench-hardened steel containing not less than 0.90 mass % and not more than 1.05 mass % of carbon, not less than 0.15 mass % and not more than 0.35 mass % of silicon, not less than 0.01 mass % and not more than 0.50 mass % of manganese, and not less than 1.30 mass % and not more than 1.65 mass % of chromium with the rest consisting of an impurity. A contact surface thereof with another part has a nitrogen concentration of not less than 0.25 mass %. A remaining austenite amount in the contact surface is not less than 6 volume % and not more than 12 volume %.
    Type: Application
    Filed: December 7, 2012
    Publication date: November 27, 2014
    Applicant: NTN CORPORATION
    Inventors: Takashi Ueno, Chikara Ohki, Daisuke Sato, Kyouhei Kageyama, Shougo Shimizu
  • Publication number: 20040168064
    Abstract: As an XML signature and encryption procedure analyzing section 107 is executed on the basis of input of an XML signature and encryption procedure list 106 and an XML schema 108 of a target element, an XML signature and encryption procedure 109 that meets all the required procedures is outputted. An XML signature and encryption module output section 110 generates a module 111 for performing digital signature and encryption to XML with reference to the XML signature and encryption procedure 109.
    Type: Application
    Filed: September 15, 2003
    Publication date: August 26, 2004
    Inventors: Shougo Shimizu, Hideaki Sunada, Hidenori Shimizu, Shunsuke Akifuji, Yutaka Kudo