Patents by Inventor Toshitsugu Matsumoto

Toshitsugu Matsumoto 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).

  • Electrostatic air filter having honeycomb filter elements
    Patent number: 4205969
    Abstract: An electrostatic air filter for the removal of particulate matter such as dust, smoke and the like from air. The filter has an ionizing section in which the particles are electrically charged and a filter section defined by one or more dielectric honeycomb filter elements arranged so that the air flows through the honeycomb cells. The filter elements are placed in an electric field so that the previously charged particles are deflected sideways as they flow through the honeycomb cells and impinge on and adhere to the cell walls. The honeycomb cells are periodically cleaned or replaced with new ones.
    Type: Grant
    Filed: March 21, 1978
    Date of Patent: June 3, 1980
    Assignee: Masahiko Fukino
    Inventor: Toshitsugu Matsumoto