Patents by Inventor Hiroharu Nagata

Hiroharu Nagata 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).

  • Sintered bearing for an EGR valve and manufacturing method thereof
    Patent number: 11306778
    Abstract: Provided is a sintered bearing for an EGR valve, including raw material powder including 9% by weight to 12% by weight of aluminum, 0.1% by weight to 0.6% by weight of phosphorus, 3% by weight to 10% by weight of graphite, and the balance including copper as a main component, and inevitable impurities. The sintered bearing has a structure of a sintered aluminum-copper alloy. The sintered bearing further includes free graphite distributed in pores formed so as to be dispersed.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: April 19, 2022
    Assignee: NTN CORPORATION
    Inventors: Yoshinori Ito, Hiroharu Nagata, Tomoyuki Seto, Takahiro Gotou
  • MACHINE COMPONENT MADE OF FERROUS SINTERED METAL
    Publication number: 20210254199
    Abstract: Raw material powder containing iron powder, copper powder, and tin powder is compressed to form a green compact. The green compact is sintered in a temperature range of from 750 to 900° C., to bond iron structures to each other with copper and tin.
    Type: Application
    Filed: May 6, 2021
    Publication date: August 19, 2021
    Applicant: NTN CORPORATION
    Inventors: Toshihiko MOURI, Hiroharu NAGATA
  • Machine component made of ferrous sintered metal
    Patent number: 11035027
    Abstract: Raw material powder containing iron powder, copper powder, and tin powder is compressed to form a green compact. The green compact is sintered in a temperature range of from 750 to 900° C., to bond iron structures to each other with copper and tin.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: June 15, 2021
    Assignee: NTN CORPORATION
    Inventors: Toshihiko Mouri, Hiroharu Nagata
  • MACHINE COMPONENT MADE OF FERROUS SINTERED METAL
    Publication number: 20180223398
    Abstract: Raw material powder containing iron powder, copper powder, and tin powder is compressed to form a green compact. The green compact is sintered in a temperature range of from 750 to 900° C., to bond iron structures to each other with copper and tin.
    Type: Application
    Filed: April 10, 2018
    Publication date: August 9, 2018
    Applicant: NTN CORPORATION
    Inventors: Toshihiko MOURI, Hiroharu NAGATA
  • Machine component made of ferrous sintered metal
    Patent number: 9970086
    Abstract: Raw material powder containing iron powder, copper powder, and tin powder is compressed to form a green compact. The green compact is sintered in a temperature range of from 750 to 900° C., to bond iron structures to each other with copper and tin.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: May 15, 2018
    Assignee: NTN CORPORATION
    Inventors: Toshihiko Mouri, Hiroharu Nagata
  • SINTERED BEARING FOR AN EGR VALVE AND MANUFACTURING METHOD THEREOF
    Publication number: 20160223017
    Abstract: Provided is a sintered bearing for an EGR valve, including raw material powder including 9% by weight to 12% by weight of aluminum, 0.1% by weight to 0.6% by weight of phosphorus, 3% by weight to 10% by weight of graphite, and the balance including copper as a main component, and inevitable impurities. The sintered bearing has a structure of a sintered aluminum-copper alloy. The sintered bearing further includes free graphite distributed in pores formed so as to be dispersed.
    Type: Application
    Filed: September 11, 2014
    Publication date: August 4, 2016
    Applicant: NTN CORPORATION
    Inventors: Yoshinori ITO, Hiroharu NAGATA, Tomoyuki SETO, Takahiro GOTOU
  • SINTERED BEARING FOR FUEL PUMP AND METHOD OF MANUFACTURING SAME
    Publication number: 20160223018
    Abstract: Provided is a sintered bearing (1, 2) for a fuel pump, including raw material powder including 8.5% by weight to 10% by weight of aluminum, 0.1% by weight to 0.6% by weight of phosphorus, and the balance including copper as a main component, and inevitable impurities. The sintered bearing (1, 2) has a structure of a sintered aluminum-copper alloy, and has a pore formed in a surface layer portion of the sintered bearing, which is smaller in size than an internal pore of the sintered bearing.
    Type: Application
    Filed: August 25, 2014
    Publication date: August 4, 2016
    Inventors: Yoshinori ITO, Hiroharu NAGATA, Yuta OHASHI, Tomoyuki SETO
  • MACHINE COMPONENT MADE OF FERROUS SINTERED METAL
    Publication number: 20150232966
    Abstract: Raw material powder containing iron powder, copper powder, and tin powder is compressed to form a green compact. The green compact is sintered in a temperature range of from 750 to 900° C., to bond iron structures to each other with copper and tin.
    Type: Application
    Filed: August 21, 2013
    Publication date: August 20, 2015
    Inventors: Toshihiko Mouri, Hiroharu Nagata