Patents by Inventor Soichi KATAYAMA

Soichi KATAYAMA 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).

  • Annular grindstone and manufacturing method of annular grindstone
    Patent number: 11110567
    Abstract: An annular grindstone includes a grindstone portion in which abrasive grains are fixed with a bonding material containing nickel and has a through hole at the center thereof. The grindstone portion has a laminated structure of a total of three or more layers in which a first layer and a second layer having a porous structure are alternately laminated on top of another along a penetrating direction of the through hole and both of outermost layers in the laminated structure which are exposed outside are the first layers.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: September 7, 2021
    Assignee: DISCO CORPORATION
    Inventor: Soichi Katayama
  • ANNULAR GRINDSTONE AND MANUFACTURING METHOD OF ANNULAR GRINDSTONE
    Publication number: 20190240812
    Abstract: An annular grindstone includes a grindstone portion in which abrasive grains are fixed with a bonding material containing nickel and has a through hole at the center thereof. The grindstone portion has a laminated structure of a total of three or more layers in which a first layer and a second layer having a porous structure are alternately laminated on top of another along a penetrating direction of the through hole and both of outermost layers in the laminated structure which are exposed outside are the first layers.
    Type: Application
    Filed: January 25, 2019
    Publication date: August 8, 2019
    Inventor: Soichi KATAYAMA