Patents by Inventor Yoshinari Obana

Yoshinari Obana 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).

  • Internal combustion engine
    Patent number: 4977870
    Abstract: An internal combustion engine is disclosed, which comprises a cylinder block having lubrication oil passages formed therein, the oil passages having a cylinder block opening at one longitudinal end of the cylinder block; a crankshaft operatively installed in the cylinder block, the crankshaft having one end portion exposed to the outside of the cylinder block from the one longitudinal end of the same; and a front cover structure attached to the one longitudinal end of the cylinder block.
    Type: Grant
    Filed: February 8, 1990
    Date of Patent: December 18, 1990
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Hiroshi Hashimoto, Tatsuo Aruga, Eiichi Fujisawa, Yoshinari Obana