Patents by Inventor Kazuo Iwanaga

Kazuo Iwanaga 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).

  • Watch dial
    Patent number: D443219
    Type: Grant
    Filed: October 5, 1999
    Date of Patent: June 5, 2001
    Assignee: Seiko Kabushiki Kaisha
    Inventor: Kazuo Iwanaga
  • Watch case with band
    Patent number: D455082
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: April 2, 2002
    Assignee: Seiko Kabushiki Kaisha
    Inventors: Shinichiro Kubo, Hitoshi Ando, Kazuo Iwanaga
  • Watch case with band
    Patent number: D455357
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: April 9, 2002
    Assignee: Seiko Kabushiki Kaisha
    Inventors: Yoko Ikegami, Kazuo Iwanaga, Yoichi Hirata
  • Watchbox
    Patent number: D386080
    Type: Grant
    Filed: October 13, 1995
    Date of Patent: November 11, 1997
    Assignee: Kabushiki Kaisha Hattori Seiko
    Inventor: Kazuo Iwanaga
  • Watch holding box
    Patent number: D392563
    Type: Grant
    Filed: August 1, 1996
    Date of Patent: March 24, 1998
    Assignee: Kabushiki Kaisha Hattori Seiko
    Inventor: Kazuo Iwanaga
  • Watch
    Patent number: D421725
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: March 21, 2000
    Assignee: Seiko Instruments Inc.
    Inventor: Kazuo Iwanaga
  • Watchcase
    Patent number: D421916
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: March 28, 2000
    Assignee: Seiko Instruments Inc.
    Inventor: Kazuo Iwanaga
  • Watch case with band
    Patent number: D433640
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: November 14, 2000
    Assignee: Seiko Kabushiki Kaisha
    Inventors: Kazuo Iwanaga, Hitoshi Ando