Patents by Inventor Kouji Iwai

Kouji Iwai 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
  • Method of dust removing in the form of air aspiration and apparatus therefor
    Patent number: 5732723
    Abstract: A method and apparatus of removing dust deposited on a surface of a vehicle body using a dust-removing brush to release the dust from The surface of the body to remove through aspiration be suction air is disclosed. The method comprises the steps of:horizontally floating the brush with the brush being held in contact with the surface of the vehicle body to allow the dust to be released from the surface of the vehicle body; and flowing the suction air along the bristles from the end region to the root region thereof to effect to aspirate out the released dust as a result of the horizontal floating movement of the brush.
    Type: Grant
    Filed: February 16, 1996
    Date of Patent: March 31, 1998
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Satoshi Uesaka, Kouji Iwai, Toshikazu Kakehashi