| US 7,452,288 B2 | ||
| Method of manufacturing a golf ball | ||
| Shunichi Nagasaki, Kobe (Japan); and Jun Yamakawa, Kobe (Japan) | ||
| Assigned to SRI Sports Ltd., Kobe-shi (Japan) | ||
| Filed on Feb. 11, 2005, as Appl. No. 11/55,075. | ||
| Claims priority of application No. 2004-087775 (JP), filed on Mar. 24, 2004. | ||
| Prior Publication US 2005/0215355 A1, Sep. 29, 2005 | ||
| Int. Cl. A63B 37/00 (2006.01) | ||
| U.S. Cl. 473—351 | 11 Claims |
| 1. A method of manufacturing a golf ball including the steps of:
providing a golf ball having a positively charged surface;
irradiating the surface of the golf ball, with negative ions; and
applying at least one layer of paint to the surface of the ball immediately after the step of irradiating; and wherein
the surface of the golf ball after the irradiation with negative ions and prior to applying at least one layer of paint is
charged at −0.1 to −40 kV.
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