Patents by Inventor Hidehiro Nishizawa

Hidehiro Nishizawa 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).

  • Cleaning system for fuel injectors
    Patent number: 4909207
    Abstract: Cleaning of gums, sludge and other adhering on a fuel injection valve in a fuel injection internal combustion engine can be done by driving of engine with a cleaning agent as a mixture of gasoline and an aromatic solvent. The mixture is adjusted the mixture rate thereof to satisfactorily combustion in an engine cylinder and dissolve gums, sludge and other adherings on the fuel injection valve. The cleaning agent is supplied to the engine cylinder through the fuel injection valve and during passing through the fuel injection valve it dissolves the adherings.
    Type: Grant
    Filed: August 5, 1988
    Date of Patent: March 20, 1990
    Assignee: Nissan Motor Company, Limited
    Inventors: Toshio Takano, Keiichi Shindo, Yasuhiro Iwata, Masamitsu Higuchi, Hidehiro Nishizawa, Atsushi Fujimoto, Hidehiro Nishizawa