Patents by Inventor Yu Hasebe

Yu Hasebe 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).

  • Patent number: 6984180
    Abstract: A golf club head is formed by integrally welding a face portion and a back portion with each other. The face portion has a circumferential edge portion in its back surface. The circumferential edge portion is made of a flat surface all over its circumference. In the rear surface of the face portion, the part other than the circumferential edge portion is formed as a recess portion. In the bottom surface of the recess portion, a first bottom surface which is the deepest, a second bottom surface which is the second deepest, a third bottom surface which is the third deepest, and a fourth bottom surface which is the shallowest are formed in descending order. Three ribs are provided vertically to extend through the recess portion.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: January 10, 2006
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Yu Hasebe
  • Publication number: 20040224785
    Abstract: As the club number increases so that the loft angle is larger, the center-of-gravity height HG of each head becomes larger, and the center-of-gravity depth ZG thereof becomes smaller. Each head is hollow, and a face portion becomes thicker in its lower portion. The back bottom thickness T is smaller in an iron shorter in club length.
    Type: Application
    Filed: June 9, 2004
    Publication date: November 11, 2004
    Applicant: BRIDGESTONE SPORTS CO., LTD.
    Inventor: Yu Hasebe
  • Patent number: 6780123
    Abstract: As the club number increases so that the loft angle is larger, the center-of-gravity height HG of each head becomes larger, and the center-of-gravity depth ZG thereof becomes smaller. Each head is hollow, and a face portion becomes thicker in its lower portion. The back bottom thickness T is smaller in an iron shorter in club length.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: August 24, 2004
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Yu Hasebe
  • Publication number: 20030176232
    Abstract: As the club number increases so that the loft angle is larger, the center-of-gravity height HG of each head becomes larger, and the center-of-gravity depth ZG thereof becomes smaller. Each head is hollow, and a face portion becomes thicker in its lower portion. The back bottom thickness T is smaller in an iron shorter in club length.
    Type: Application
    Filed: March 13, 2003
    Publication date: September 18, 2003
    Applicant: BRIDGESTONE SPORTS CO., LTD.
    Inventor: Yu Hasebe
  • Publication number: 20030176231
    Abstract: A golf club head is formed by integrally welding a face portion and a back portion with each other. The face portion has a circumferential edge portion in its back surface. The circumferential edge portion is made of a flat surface all over its circumference. In the rear surface of the face portion, the part other than the circumferential edge portion is formed as a recess portion. In the bottom surface of the recess portion, a first bottom surface which is the deepest, a second bottom surface which is the second deepest, a third bottom surface which is the third deepest, and a fourth bottom surface which is the shallowest are formed in descending order. Three ribs are provided vertically to extend through the recess portion.
    Type: Application
    Filed: March 13, 2003
    Publication date: September 18, 2003
    Applicant: BRIDGESTONE SPORTS CO., LTD.
    Inventor: Yu Hasebe
  • Patent number: D438277
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: February 27, 2001
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Yu Hasebe
  • Patent number: D508969
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: August 30, 2005
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Yu Hasebe
  • Patent number: D447200
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: August 28, 2001
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Yu Hasebe
  • Patent number: D520585
    Type: Grant
    Filed: January 13, 2005
    Date of Patent: May 9, 2006
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Yu Hasebe
  • Patent number: D521585
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: May 23, 2006
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Yu Hasebe
  • Patent number: D523104
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: June 13, 2006
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Yu Hasebe
  • Patent number: D524391
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: July 4, 2006
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Yu Hasebe
  • Patent number: D534595
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: January 2, 2007
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Yu Hasebe
  • Patent number: D428633
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: July 25, 2000
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Yu Hasebe'