Patents by Inventor Hirohide Fukudome

Hirohide Fukudome 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).

  • Grinding stone
    Patent number: 6533650
    Abstract: An offset type grindstone having a circular metal substrate provided in a central section thereof with a recess having a hole used to mount the grindstone on a power tool, and a grindstone portion including one layer of either diamond grains or CBN grains and formed in one body so as to extend continuously in the direction of an outer circumference of a front surface of the recess, in which grindstone the concentration of the grains on the grindstone portion is set high in a region of an outer circumferential end section thereof, and low in the other region thereof. This grindstone is superior in lifetime with a very high grinding speed and a high flat grindability attained at once.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: March 18, 2003
    Assignee: Sankyo Diamond Industrial Co., Ltd.
    Inventors: Takuma Yoshida, Nobuo Fukada, Shigeyoshi Kobayashi, Hirohide Fukudome
  • Grinding Stone
    Publication number: 20020137444
    Abstract: An offset type grindstone having a circular metal substrate provided in a central section thereof with a recess having a hole used to mount the grindstone on a power tool, and a grindstone portion including one layer of either diamond grains or cBN grains and formed in one body so as to extend continuously in the direction of an outer circumference of a front surface of the recess, in which grindstone the concentration of the grains on the grindstone portion is set high in a region of an outer circumferential end section thereof, and low in the other region thereof. This grindstone is superior in lifetime with a very high grinding speed and a high flat grindability attained at once.
    Type: Application
    Filed: December 5, 2001
    Publication date: September 26, 2002
    Inventors: Takuma Yoshida, Nobuo Fukada, Shigeyoshi Kobayashi, Hirohide Fukudome