Patents by Inventor Hiromichi Izushima

Hiromichi Izushima 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).

  • Writing stem for writing instruments
    Patent number: 6375373
    Abstract: A writing stem for writing instruments which can give an appropriate cushion effect to the griping thumb and fingers includes a grip section formed of an elastic material. A plurality of protruding pieces that can be bent by the gripping force are formed in parallel to one another on the surface of the grip section, including a portion about 30 mm to about 40 mm behind the tip of the writing instrument, and this plurality of protruding pieces are formed over a length equivalent to about ⅔ of the overall length of the grip section in the longitudinal direction.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: April 23, 2002
    Assignee: Kotobuki & Co, Ltd.
    Inventor: Hiromichi Izushima
  • WRITING STEM FOR WRITING INSTRUMENTS
    Publication number: 20010002961
    Abstract: A writing stem for writing instruments which can give an appropriate cushion effect to the gripping thumb and fingers includes a grip section formed of an elastic material. A plurality of protruding pieces that can be bent by the gripping force are formed in parallel to one another on the surface of the grip section, including a portion about 30 mm to about 40 mm behind the tip of the writing instrument, and this plurality of protruding pieces are formed over a length equivalent to about ⅔ of the overall length of the grip section in the longitudinal direction.
    Type: Application
    Filed: November 12, 1999
    Publication date: June 7, 2001
    Inventor: HIROMICHI IZUSHIMA
  • Writing instrument
    Patent number: D436996
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: January 30, 2001
    Assignee: Kotobuki & Co., Ltd.
    Inventor: Hiromichi Izushima
  • Finger gripping device for a writing instrument
    Patent number: D440605
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: April 17, 2001
    Assignee: Kotobuki & Co., Ltd.
    Inventor: Hiromichi Izushima
  • Writing instrument
    Patent number: D441015
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: April 24, 2001
    Assignee: Kotobuki & Co., Ltd.
    Inventor: Hiromichi Izushima
  • Writing instrument with cap member therefor
    Patent number: D442635
    Type: Grant
    Filed: May 17, 2000
    Date of Patent: May 22, 2001
    Assignee: Kotobuki and Co., Ltd.
    Inventor: Hiromichi Izushima
  • Writing instrument
    Patent number: D444172
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: June 26, 2001
    Assignee: Kotobuki & Co., Ltd.
    Inventor: Hiromichi Izushima
  • Writing instrument
    Patent number: D444173
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: June 26, 2001
    Assignee: Kotobuki & Co., Ltd.
    Inventor: Hiromichi Izushima
  • Writing instrument
    Patent number: D444174
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: June 26, 2001
    Assignee: Kotobuki & Co., Ltd.
    Inventor: Hiromichi Izushima
  • Writing instrument
    Patent number: D444498
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: July 3, 2001
    Assignee: Kotobuki & Co., Ltd.
    Inventor: Hiromichi Izushima
  • Writing instrument
    Patent number: D444500
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: July 3, 2001
    Assignee: Kotobuki & Co., Ltd.
    Inventor: Hiromichi Izushima
  • Writing instrument
    Patent number: D444815
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: July 10, 2001
    Assignee: Kotobuki & Co., Ltd.
    Inventor: Hiromichi Izushima
  • Writing instrument
    Patent number: D445829
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: July 31, 2001
    Assignee: Kotobuki & Co., Ltd.
    Inventor: Hiromichi Izushima
  • Writing instrument
    Patent number: D448803
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: October 2, 2001
    Assignee: Kotobuki & Co., Ltd.
    Inventor: Hiromichi Izushima
  • Writing instrument
    Patent number: D448804
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: October 2, 2001
    Assignee: Kotobuki & Co., Ltd.
    Inventor: Hiromichi Izushima
  • Writing instrument
    Patent number: D452528
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: December 25, 2001
    Assignee: Kotobuki & Co., Ltd.
    Inventor: Hiromichi Izushima
  • Writing instrument
    Patent number: D455458
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: April 9, 2002
    Assignee: Kotobuki & Co., Ltd.
    Inventor: Hiromichi Izushima
  • Clip of writing instrument
    Patent number: D489092
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: April 27, 2004
    Assignee: Kotobuki & Co. LTD
    Inventor: Hiromichi Izushima
  • Writing instrument
    Patent number: D491983
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: June 22, 2004
    Assignee: Kotobuki & Co., Ltd.
    Inventor: Hiromichi Izushima
  • Writing instrument
    Patent number: D431599
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: October 3, 2000
    Assignee: Kotobuki & Co., Ltd.
    Inventor: Hiromichi Izushima