Patents by Inventor Masakazu Izumi

Masakazu Izumi 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).

  • Anchorage for steel wire strand for prestressed concrete
    Patent number: 4590724
    Abstract: An anchorage for PC wire strands, anchorage having an enlarged head portion formed by heading a terminal end of a PC wire strand, and an anchoring member held in pressure contact with a portion of the PC wire strand in a position near the terminal end and having a side end held in close contact with the enlarged head portion, the anchoring member being so formed as to have a length corresponding to one third or one half of the length required for anchoring the PC wire strand by the anchoring member alone.
    Type: Grant
    Filed: April 28, 1983
    Date of Patent: May 27, 1986
    Assignee: Shinko Kosen Kogyo Kabushiki Kaisha
    Inventors: Makoto Kurauchi, Takeshi Kobayashi, Masakazu Izumi, Jiro Aota
  • Hair trimmer
    Patent number: D521684
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: May 23, 2006
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Masakazu Izumi, Yasuhiro Akahori
  • Hair trimmer
    Patent number: D524485
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: July 4, 2006
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Masakazu Izumi, Yasunari Maeda
  • Oral irrigator
    Patent number: D548334
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: August 7, 2007
    Assignee: Matsushita Electric Works, Ltd.
    Inventor: Masakazu Izumi