Patents by Inventor Mikiya Ido

Mikiya Ido 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).

  • Coloring fluid-containing marking device made of biodegradable plastic resin
    Patent number: 5700534
    Abstract: A coloring fluid-containing marking device which sufficiently withstand practical use and, after use, its molded members can be biologically degraded in soil. The marking device comprises a coloring fluid container molded from an aliphatic polyester resin, and a coloring fluid containing a solvent mainly comprising an aliphatic hydrocarbon and/or an alicyclic hydrocarbon.
    Type: Grant
    Filed: August 4, 1995
    Date of Patent: December 23, 1997
    Assignee: The Pilot Ink Co., Ltd.
    Inventors: Masaki Shibazaki, Mikiya Ido, Tohru Watanabe
  • Ball-point pen
    Patent number: D462716
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: September 10, 2002
    Assignee: The Pilot Ink Co., Ltd.
    Inventors: Tomoko Tsuchida, Mikiya Ido
  • Pen point of a ball-point pen
    Patent number: D408451
    Type: Grant
    Filed: February 26, 1998
    Date of Patent: April 20, 1999
    Assignee: The Pilot Ink Co., Ltd.
    Inventor: Mikiya Ido
  • Ball-point pen
    Patent number: D426263
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: June 6, 2000
    Assignee: The Pilot Ink Co., Ltd.
    Inventors: Nobuo Sekine, Kazuo Iwase, Mikiya Ido
  • Ball-point pen
    Patent number: D426573
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: June 13, 2000
    Assignee: The Pilot Ink Co., Ltd.
    Inventors: Nobuo Sekine, Kazuo Iwase, Mikiya Ido