Patents by Inventor Kanekiyo Narita

Kanekiyo Narita 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).

  • Method and apparatus for forming filter element
    Patent number: 5120296
    Abstract: A tape like material including synthetic resin for a filter element is bent into a corrugated pattern while the material is passed between pairs of forming and cutting rollers. Since pairs of cutters are provided within the rollers and since guide plates are provided around the rollers, the material is held abutting the rollers even when the material is cut by the cutters. The material is then conveyed within a reducing drum. The pitch of the corrugated portions formed on the material is reduced and the material is formed into a semicircular shape within the reducing drum. After passed the reducing drum, the material is transferred to a forming path.
    Type: Grant
    Filed: October 18, 1990
    Date of Patent: June 9, 1992
    Assignee: Nippondenso Co., Ltd.
    Inventors: Yoshimitsu Yamaguchi, Masanori Suzuki, Kanekiyo Narita, Akira Masuda, Yasuo Hibi, Takayuki Suzuki