Patents by Inventor Mitsuhiko Akiyama

Mitsuhiko Akiyama 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).

  • Integrally molded type filter unit and manufacture of the same
    Patent number: 6416570
    Abstract: A filter unit comprising a filter part made of an adsorbent-bearing filtration material and characterized in that said filter part is integrally molded with a filter holding frame made of a thermoplastic resin and that the adsorbent of the filter part is packed to the position contacting the filter holding frame.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: July 9, 2002
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Sadahito Goto, Mitsuhiko Akiyama, Shinichi Minemura
  • Integrally molded type filter unit and manufacture of the same
    Publication number: 20010032545
    Abstract: A filter unit comprising a filter part made of an adsorbent-bearing filtration material and characterized in that said filter part is integrally molded with a filter holding frame made of a thermoplastic resin and that said adsorbent of said filter part is packed to the position contacting the filter holding frame.
    Type: Application
    Filed: March 1, 2001
    Publication date: October 25, 2001
    Inventors: Sadahito Goto, Mitsuhiko Akiyama, Shinichi Minemura