Patents by Inventor Kazufumi Miyoshi

Kazufumi Miyoshi 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).

  • Carburization sensing method
    Patent number: 8610426
    Abstract: A carburization sensing method according to the present invention includes: a first procedure of attaching a magnetic material to a reference material which has equivalent electromagnetic properties to those of a test material and is not carburized, a second procedure of measuring magnetic strength of each magnetic material and to acquire an electromagnetic test output value for each magnetic material, a third procedure of calculating a correlation between the measured magnetic strength value and the electromagnetic test output value, a fourth procedure of measuring magnetic strengths on a plurality of carburized materials, a fifth procedure of calculating a correlation between a carburized depth and the measured magnetic strength value, a sixth procedure of determining a threshold value Th2 of the measured magnetic strength value corresponding to a threshold value Th1 of the carburized depth to be sensed, a seventh procedure of determining a threshold value Th3 of an electromagnetic test output value corresp
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: December 17, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Shigetoshi Hyodo, Yoshikazu Takimoto, Kazufumi Miyoshi
  • CARBURIZATION SENSING METHOD
    Publication number: 20120032672
    Abstract: A carburization sensing method according to the present invention includes: a first procedure of attaching a magnetic material to a reference material which has equivalent electromagnetic properties to those of a test material and is not carburized, a second procedure of measuring magnetic strength of each magnetic material and to acquire an electromagnetic test output value for each magnetic material, a third procedure of calculating a correlation between the measured magnetic strength value and the electromagnetic test output value, a fourth procedure of measuring magnetic strengths on a plurality of carburized materials, a fifth procedure of calculating a correlation between a carburized depth and the measured magnetic strength value, a sixth procedure of determining a threshold value Th2 of the measured magnetic strength value corresponding to a threshold value Th1 of the carburized depth to be sensed, a seventh procedure of determining a threshold value Th3 of an electromagnetic test output value corresp
    Type: Application
    Filed: August 23, 2011
    Publication date: February 9, 2012
    Applicant: Sumitomo Metal Industries, Ltd.
    Inventors: Shigetoshi HYODO, Yoshikazu Takimoto, Kazufumi Miyoshi