Patents by Inventor Norifumi Niwa

Norifumi Niwa 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).

  • Adapters for use with an electric power tool
    Patent number: 6502949
    Abstract: An adapter (1) for an electric power tool (45) includes a main body (2) that has a light assembly and a first coupling portion (4) provided on the top surface of the main body (2), the first coupling portion (4) having a configuration identical to a coupling portion of a battery pack (31) that is attached to the electric power tool (45). The adapter further includes a second coupling portion (5) provided on the bottom surface of the main body (2), the second coupling portion (5) having a configuration identical to a coupling portion of the electric power tool (45) that is attached to the battery pack (31). The light assembly includes a light (26) attached to the main body (2) via a flexible stem (27). The light (26) can be turned on and off independently from the operation of the electric power tool (45).
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: January 7, 2003
    Assignee: Makita Corporation
    Inventors: Toru Horiyama, Norifumi Niwa, Kazuyuki Sakakibara
  • Portable electric wrench
    Patent number: D530176
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: October 17, 2006
    Assignee: Makita Corporation
    Inventor: Norifumi Niwa
  • Battery pack
    Patent number: D477811
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: July 29, 2003
    Assignee: Makita Corporation
    Inventors: Norifumi Niwa, Kazuma Oshima, Shinsuke Okuda
  • Battery pack
    Patent number: D481672
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: November 4, 2003
    Assignee: Makita Corporation
    Inventors: Norifumi Niwa, Kazuma Oshima, Shinsuke Okuda
  • Cordless circular saw
    Patent number: D375439
    Type: Grant
    Filed: June 23, 1995
    Date of Patent: November 12, 1996
    Assignee: Makita Corporation
    Inventors: Norifumi Niwa, Takefumi Furuta
  • Portable electric chain saw
    Patent number: D385766
    Type: Grant
    Filed: September 19, 1996
    Date of Patent: November 4, 1997
    Assignee: Makita Corporation
    Inventors: Masaki Kondo, Norifumi Niwa
  • Portable electric screwdriver
    Patent number: D386662
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: November 25, 1997
    Assignee: Makita Corporation
    Inventors: Katsumi Tozawa, Naohiro Hayakawa, Norifumi Niwa, Hiroshi Fujimoto
  • Concrete vibrator body
    Patent number: D388676
    Type: Grant
    Filed: November 5, 1996
    Date of Patent: January 6, 1998
    Assignee: Nakita Corporation
    Inventors: Norifumi Niwa, Masahiko Inai
  • Automatic venetian blind opener and closer
    Patent number: D392490
    Type: Grant
    Filed: August 13, 1996
    Date of Patent: March 24, 1998
    Assignee: Makita Corporation
    Inventors: Akinori Kimata, Norifumi Niwa
  • Cordless impact driver
    Patent number: D392863
    Type: Grant
    Filed: April 24, 1997
    Date of Patent: March 31, 1998
    Assignee: Makita Corporation
    Inventors: Manabu Sugimoto, Norifumi Niwa, Tohru Horiyama
  • Portable electric hammer
    Patent number: D395586
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: June 30, 1998
    Assignee: Makita Corporation
    Inventors: Takuo Arakawa, Norifumi Niwa
  • Portable electric jig saw
    Patent number: D409469
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: May 11, 1999
    Assignee: Makita Corporation
    Inventors: Norifumi Niwa, Masamichi Miyazawa
  • Cordless circular saw
    Patent number: D411425
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: June 22, 1999
    Assignee: Makita Corporation
    Inventors: Manabu Sugimoto, Norifumi Niwa, Shingo Umemura
  • Portable electric screwdriver
    Patent number: D411947
    Type: Grant
    Filed: August 19, 1998
    Date of Patent: July 13, 1999
    Assignee: Makita Corporation
    Inventors: Manabu Sugimoto, Norifumi Niwa, Isao Miyashita, Shingo Umemura
  • Power shears
    Patent number: D415400
    Type: Grant
    Filed: December 24, 1998
    Date of Patent: October 19, 1999
    Assignee: Makita Corporation
    Inventors: Makoto Mizutani, Norifumi Niwa, Tadayoshi Tsuchiya
  • Sander
    Patent number: D431437
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: October 3, 2000
    Assignee: Makita Corporation
    Inventors: Norifumi Niwa, Taro Nagahama