Patents by Inventor Etsuo Kakizaki

Etsuo Kakizaki 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).

  • Urethane foam member, seal structure, toner storage container, process cartridge, image forming apparatus
    Patent number: 8999501
    Abstract: A urethane foam member that after cutting into the desired shape from sheet urethane foam is applied with adhesive on one face of the urethane foam, an edge portion of the non-adhesive applied face at least at one side of the urethane foam member being of a low edge profile, to which permanent thermal distortion has been induced such that the thickness of the edge portion of the side is thinnest at the end portion thereof and the thickness gradually increases with distance from the end portion.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: April 7, 2015
    Assignees: Ricoh Company, Ltd, Bridgestone Corporation
    Inventors: Takaya Muraishi, Satoshi Hatori, Kaoru Yoshino, Norio Yamagami, Etsuo Kakizaki
  • URETHANE FOAM MEMBER, SEAL STRUCTURE, TONER STORAGE CONTAINER, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS
    Publication number: 20090142574
    Abstract: A urethane foam member that after cutting into the desired shape from sheet urethane foam is applied with adhesive on one face of the urethane foam, an edge portion of the non-adhesive applied face at least at one side of the urethane foam member being of a low edge profile, to which permanent thermal distortion has been induced such that the thickness of the edge portion of the side is thinnest at the end portion thereof and the thickness gradually increases with distance from the end portion.
    Type: Application
    Filed: November 25, 2008
    Publication date: June 4, 2009
    Applicants: Ricoh Company, Ltd., BRIDGESTONE CORPORATION
    Inventors: Takaya Muraishi, Satoshi Hatori, Kaoru Yoshino, Norio Yamagami, Etsuo Kakizaki