Patents by Inventor Harukazu Matsuyama

Harukazu Matsuyama 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).

  • Apparatus for making a filter from a material for a filter element
    Patent number: 4747816
    Abstract: An apparatus performing a filter from a material for a filter element automatically and quickly. The filter made by the present apparatus has a plurality of wavy portions which are provided in such a manner that a plurality of wavy portions forms a circle.The apparatus employs a contracting apparatus for contracting a continuously corrugated strip of material for a filter element in such a manner that a distance between adjacent ridges of the corrugated strip is reduced so that the corrugated strip becomes the wavy portion of the filter. The apparatus also employs a rounding apparatus for rounding the continuously corrugated strip in such a manner that both ends of the strip are connected to each other so that the wavy portions made from the corrugated strip form a circle. The apparatus further employs a shaping apparatus for shaping the rounded continuously corrugated strip so that the rounded strip becomes the filter.
    Type: Grant
    Filed: April 21, 1987
    Date of Patent: May 31, 1988
    Assignee: Nippondenso Co., Ltd.
    Inventors: Harukazu Matsuyama, Tetsuo Kato, Yasuo Hibi, Satoshi Inukai, Masanori Suzuki, Yoshimitsu Yamaguchi