Patents by Inventor Makoto Yukinawa

Makoto Yukinawa 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).

  • Fuel injection valve
    Patent number: 6719223
    Abstract: A nozzle plate is provided with annular step portions each located on the periphery of a nozzle opening rim on a valve seat side, which rises up towards the nozzle opening rim from the radial outside of the nozzle, to form a fuel flow which flows in reverse from the radial outside to collide at an incline with a fuel flow which flows directly into the nozzle.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: April 13, 2004
    Assignee: Unisia Jecs Corporation
    Inventors: Makoto Yukinawa, Masatoshi Yanase, Hiroaki Hirata
  • Fuel injection valve
    Publication number: 20020100821
    Abstract: A nozzle plate is provided with annular step portions each located on the periphery of a nozzle opening rim on a valve seat side, which rises up towards the nozzle opening rim from the radial outside of the nozzle, to form a fuel flow which flows in reverse from the radial outside to collide at an incline with a fuel flow which flows directly into the nozzle.
    Type: Application
    Filed: January 18, 2002
    Publication date: August 1, 2002
    Applicant: Unisia JECS Corporation
    Inventors: Makoto Yukinawa, Masatoshi Yanase, Hiroaki Hirata