Patents by Inventor Shoichi Nagatoshi

Shoichi Nagatoshi 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).

  • Method of inspecting a body having fine-gap grooves and method of repairing the body
    Patent number: 7679738
    Abstract: A molding die has through holes composed of feed holes and slit grooves for producing honeycomb structure bodies. The slit groove is formed in at least a part of each through hole. In a method of inspecting the molding die, a light is irradiated into the feed holes side to pass through the through holes. A camera is disposed at the slit groove formation side of the molding die to photograph the amount of light output from the slit groove side. A difference in intensity of the amount of light output from the slit grooves is calculated in order to detect at least the presence of a defective slit groove having an abnormal part. In another method of repairing the defective slit groove, a modifier made of abrasive grains and clay mother material is forcedly provided into the defective slit groove in order to repair or remove the abnormal part.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: March 16, 2010
    Assignee: Denso Corporation
    Inventors: Shoichi Nagatoshi, Susumu Takahashi, Akihiko Takasu
  • METHOD OF INSPECTING A BODY HAVING FINE-GAP GROOVES AND METHOD OF REPAIRING THE BODY
    Publication number: 20080225302
    Abstract: A molding die has through holes composed of feed holes and slit grooves for producing honeycomb structure bodies. The slit groove is formed in at least a part of each through hole. In a method of inspecting the molding die, a light is irradiated into the feed holes side to pass through the through holes. A camera is disposed at the slit groove formation side of the molding die to photograph the amount of light output from the slit groove side. A difference in intensity of the amount of light output from the slit grooves is calculated in order to detect at least the presence of a defective slit groove having an abnormal part. In another method of repairing the defective slit groove, a modifier made of abrasive grains and clay mother material is forcedly provided into the defective slit groove in order to repair or remove the abnormal part.
    Type: Application
    Filed: December 4, 2007
    Publication date: September 18, 2008
    Applicant: DENSO CORPORATION
    Inventors: Shoichi Nagatoshi, Susumu Takahashi, Akihiko Takasu