Patents Assigned to Bridgestone Corporation Co., Ltd.
  • Multi-piece solid golf ball
    Patent number: 6537158
    Abstract: A multi-piece solid golf ball comprising a solid core, an intermediate layer, and a cover is improved in flight distance, feel and durability when the solid core has a maximum hardness at a position spaced 3-10 mm inward from its surface, the difference between the maximum hardness and the hardness at its center is at least 3 JIS-C hardness units, and the intermediate layer is softer than the cover.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: March 25, 2003
    Assignee: Bridgestone Corporation Co., Ltd.
    Inventor: Hideo Watanabe