Patents by Inventor Tsuguo Kusakabe

Tsuguo Kusakabe 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).

  • Grindstone having resinoid abrasive structure including abrasive agglomerates each provided by vitrified abrasive structure
    Patent number: 6805620
    Abstract: A resinoid grindstone including a main body having an abrasive structure in which abrasive agglomerates are held together by a resin bond. Each of the abrasive agglomerates includes abrasive grains which are held together by an inorganic bond. The resin bond includes a filler such that a ratio of a strength of the abrasive agglomerates to a strength of the resin bond is not higher than 1.5. A ratio of a total weight of the abrasive agglomerates included in the abrasive structure, to a weight of the abrasive structure is not lower than 10% and is not higher than 40%.
    Type: Grant
    Filed: June 19, 2003
    Date of Patent: October 19, 2004
    Assignee: Noritake Co., Limited
    Inventors: Kouji Iwai, Tsuguo Kusakabe, Yasushi Sato
  • Grindstone having resinoid abrasive structure including abrasive agglomerates each provided by vitrified abrasive structure
    Publication number: 20040176019
    Abstract: A resinoid grindstone including a main body having an abrasive structure in which abrasive agglomerates are held together by a resin bond. Each of the abrasive agglomerates includes abrasive grains which are held together by an inorganic bond. The resin bond includes a filler such that a ratio of a strength of the abrasive agglomerates to a strength of the resin bond is not higher than 1.5. A ratio of a total weight of the abrasive agglomerates included in the abrasive structure, to a weight of the abrasive structure is not lower than 10% and is not higher than 40%.
    Type: Application
    Filed: June 19, 2003
    Publication date: September 9, 2004
    Applicant: NORITAKE CO., LIMITED
    Inventors: Kouji Iwai, Tsuguo Kusakabe, Yasushi Sato
  • Hybrid type resinoid grindstone with abrasive agglomerates in which sol-gel abrasive grains are held by vitrified bond
    Patent number: 6562089
    Abstract: A hybrid type resinoid grindstone including abrasive agglomerates which are held together by a thermosetting synthetic resin used as a bonding agent, wherein each of the abrasive agglomerates includes sol-gel abrasive grains which are held together by a vitrified bonding agent. In the present hybrid type resinoid grindstone of the present invention, each of the sol-gel abrasive grains, which are held together by the vitrified bonding agent, restores its sharpness as a result of each of the successive removals of fine crystals with application of an impact or shock to the sol-gel abrasive grain, as in a vitrified grindstone, during a grinding operation.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: May 13, 2003
    Assignee: Noritake Co., Limited
    Inventors: Kouji Iwai, Tsuguo Kusakabe
  • Grinding wheel having urethane resin bushing in its center mounting hole
    Patent number: 6402606
    Abstract: A grinding wheel having a main body and a tubular bushing member which is fitted in an inner circumferential surface of a mounting hole formed through the main body, so that the grinding wheel is mounted on a wheel spindle of a grinding machine, with the bushing member being fitted on the wheel spindle. The bushing member includes an urethane resin as a main component thereof.
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: June 11, 2002
    Assignee: Noritake Co., Limited
    Inventors: Tsuguo Kusakabe, Ryuichi Nakane