Patents by Inventor Keiji Ahiko

Keiji Ahiko 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).

  • Excavator
    Patent number: D752112
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: March 22, 2016
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shigehisa Hagura, Tomoyuki Miyata, Kazuhiko Hiraoka, Hiroshi Tabeta, Keiji Ahiko, Junya Kawamoto, Tomoyuki Tanaka
  • Excavator
    Patent number: D752113
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: March 22, 2016
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shigehisa Hagura, Tomoyuki Miyata, Kazuhiko Hiraoka, Hiroshi Tabeta, Keiji Ahiko, Junya Kawamoto, Ryozo Fujikawa
  • Excavator
    Patent number: D752651
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: March 29, 2016
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shigehisa Hagura, Tomoyuki Miyata, Kazuhiko Hiraoka, Osamu Kokuryou, Keiji Ahiko, Junya Kawamoto, Tomoyuki Tanaka