Patents by Inventor Takaoki Ito

Takaoki Ito 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).

  • Iron golf club heads, iron golf clubs and golf club evaluating method
    Publication number: 20020082119
    Abstract: A variety of novel clubheads and iron golf clubs with the novel heads are provided by reexamining the conventional views that iron golf clubs with a low center of gravity have good performance, and introducing a new criterion for evaluation to obtain iron golf clubs capable of sending the ball better distance. A clubhead includes a face forming portion having a face formed on the forward surface thereof, and a sole forming portion extending rearwardly from the lower end of the face forming portion. The sole forming portion has a sole formed on the bottom thereof. The sole forming portion is provided with one of a hole, a hollow portion and a filling portion near the face forming portion.
    Type: Application
    Filed: September 25, 2001
    Publication date: June 27, 2002
    Applicant: Jiro Hamada
    Inventors: Jiro Hamada, Takaoki Ito
  • Iron golf club heads, iron golf clubs and golf club evaluating method
    Patent number: 6368232
    Abstract: A variety of novel club heads and iron golf clubs with the novel heads are provided by reexamining the conventional views that iron golf clubs with a low center of gravity have good performance, and introducing a new criterion for evaluation to obtain iron golf clubs capable of sending the ball better distance. A club head includes a face forming portion having a face formed on the forward surface thereof, and a sole forming portion extending rearwardly from the lower end of the face forming portion. The sole forming portion has a sole formed on the bottom thereof. The sole forming portion is provided with one of a hole, a hollow portion and a filling portion near the face forming portion.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: April 9, 2002
    Assignee: Jiro Hamada
    Inventors: Jiro Hamada, Takaoki Ito
  • Iron golf club heads, iron golf clubs and golf club evaluating method
    Patent number: 6344000
    Abstract: A variety of novel clubheads and iron golf clubs with the novel heads are provided by reexamining the conventional views that iron golf clubs with a low center of gravity have good performance, and introducing a new criterion for evaluation to obtain iron golf clubs capable of sending the ball better distance. A clubhead includes a face forming portion having a face formed on the forward surface thereof, and a sole forming portion extending rearwardly from the lower end of the face forming portion. The sole forming portion has a sole formed on the bottom thereof. The sole forming portion is provided with one of a hole, a hollow portion and a filling portion near the face forming portion.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: February 5, 2002
    Inventors: Jiro Hamada, Takaoki Ito
  • Iron golf club heads, iron golf clubs and golf club evaluating method
    Patent number: 6344001
    Abstract: A variety of novel clubheads and iron golf clubs with the novel heads are provided by reexamining the conventional views that iron golf clubs with a low center of gravity have good performance, and introducing a new criterion for evaluation to obtain iron golf clubs capable of sending the ball better distance. A clubhead includes a face forming portion having a face formed on the forward surface thereof, and a sole forming portion extending rearwardly from the lower end of the face forming portion. The sole forming portion has a sole formed on the bottom thereof. The sole forming portion is provided with one of a hole, a hollow portion and a filling portion near the face forming portion.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: February 5, 2002
    Inventors: Jiro Hamada, Takaoki Ito
  • Iron golf club heads, iron golf clubs and golf club evaluating method
    Patent number: 6086485
    Abstract: A variety of novel clubheads and iron golf clubs with the novel heads are provided by reexamining the conventional views that iron golf clubs with a low center of gravity have good performance, and introducing a new criterion for evaluation to obtain iron golf clubs capable of sending the ball better distance. A clubhead includes a face forming portion having a face formed on the forward surface thereof, and a sole forming portion extending rearwardly from the lower end of the face forming portion. The sole forming portion has a sole formed on the bottom thereof. The sole forming portion is provided with one of a hole, a hollow portion and a filling portion near the face forming portion.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: July 11, 2000
    Assignee: Jiro Hamada
    Inventors: Jiro Hamada, Takaoki Ito