Patents by Inventor Yasutomo Ishi

Yasutomo Ishi 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).

  • Roll, replacement unit, and image forming apparatus
    Publication number: 20080025753
    Abstract: A roll includes a shaft, and a foamed material coating the shaft that includes a first section that extends from the shaft to a surface of the foamed material and has electrical resistance, a value of which is within a first range, and a second section that extends from the shaft to the surface of the foamed material and has electrical resistance, a value of which is within a second range different from the first range.
    Type: Application
    Filed: April 10, 2007
    Publication date: January 31, 2008
    Inventors: Mitsuo Yamamoto, Yasutomo Ishi, Masanori Kobayashi, Masayuki Kono