Sumitomo Rubber Industries Limited

Sri Sports Limited

Atsuko Mitsuba

Tsuneyuki Nagase

Takefumi Nakashita

Daijiro Touji

Yukiyasu Nakashio

Akihiro Nakahara

Yosuke Yamamoto

Teruo Sasaki

Ichiro Tominaga

Tennis racket

Golf ballof the present invention has a groupof multiple marks which are visible at one view. This groupof marks includes a target mark t consisting of single or multiple marks provided along one great circle, and an inclined mark k which appears to be inclined with respect to this target mark t. The inclined mark k may be provided as a linear mark which appears to be inclined with respect to the target mark t. The group of marks may include a target mark t consisting of single or multiple marks provided along one great circle, and a side mark s provided on the side of this target mark t. This side mark s preferably has a dot shape. The group of marks may include a target mark t consisting of single or multiple marks provided along one great circle, and an accompanied mark h provided on the same great circle on which the target mark t is provided.

Golf ball

A golf club head comprises a face portion having a front face defining a club face for hitting a ball and a back surface, a sole portion extending backwards from a lower edge of the face portion, and a backside wall extending upwards from the sole portion and having a free upper end, wherein the backside wall comprises a portion inclined frontward in order to lower and deepen the center of gravity while mitigating the shock that the user's hands get at the time of miss shot.

Golf club head

Low-temperature insulating material

A heat reserve material having excellent physical properties. The heat reserve material comprises;

Heat reserve material

Growing community of inventors

Kobe, Japan

Atsuko Mitsuba