Patents by Inventor Hidenobu NISHIO

Hidenobu NISHIO 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).

  • Hollow engine valve and manufacturing method therefor
    Patent number: 11215091
    Abstract: A manufacturing method for a hollow engine valve comprises: a step of forming, by forging, a solid round bar as a material of a valve main body into a valve main body intermediate member provided with a semifinished product valve head portion corresponding to a valve head portion and a solid stem portion corresponding to a valve stem portion; a step of performing cutting process with respect to the valve main body intermediate member across the solid stem portion and the semifinished product valve head portion for forming a semifinished product hollow hole with a bottom corresponding to a hollow hole; and a step of performing necking process with respect to the valve main body semifinished product for squeezing the semifinished product valve stem portion step by step, to form the valve main body semifinished product into the valve main body.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: January 4, 2022
    Assignee: FUJI HOLLOW VALVE INC.
    Inventors: Hirokazu Morii, Hidenobu Nishio, Kenichiro Hirao
  • HOLLOW ENGINE VALVE AND MANUFACTURING METHOD THEREFOR
    Publication number: 20200095907
    Abstract: The present invention provides a hollow engine valve achieving high durability while suppressing an increase in manufacturing cost, and a manufacturing method therefor.
    Type: Application
    Filed: November 26, 2019
    Publication date: March 26, 2020
    Applicant: FUJI HOLLOW VALVE INC.
    Inventors: Hirokazu MORII, Hidenobu NISHIO, Kenichiro HIRAO
  • Hollow engine valve and manufacturing method therefor
    Patent number: 10526933
    Abstract: The present invention provides a hollow engine valve achieving high durability while suppressing an increase in manufacturing cost, and a manufacturing method therefor.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: January 7, 2020
    Assignee: FUJI HOLLOW VALVE INC.
    Inventors: Hirokazu Morii, Hidenobu Nishio, Kenichiro Hirao
  • HOLLOW ENGINE VALVE AND MANUFACTURING METHOD THEREFOR
    Publication number: 20170234175
    Abstract: The present invention provides a hollow engine valve achieving high durability while suppressing an increase in manufacturing cost, and a manufacturing method therefor.
    Type: Application
    Filed: July 24, 2015
    Publication date: August 17, 2017
    Applicant: FUJI HOLLOW VALVE INC.
    Inventors: Hirokazu MORII, Hidenobu NISHIO, Kenichiro HIRAO