Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2007-06-12
2007-06-12
Buttner, David J. (Department: 1712)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S261000, C525S263000, C525S265000, C525S269000, C525S274000, C473S371000, C473S372000
Reexamination Certificate
active
10959221
ABSTRACT:
A golf ball, typically its core, is manufactured by molding and vulcanizing a rubber composition comprising a base rubber, an unsaturated carboxylic acid or a metal salt thereof, an inorganic filler, an organic peroxide, and an organosulfur compound. The base rubber contains a polybutadiene having a Mw of 60–150×104and a Mw/Mn of up to 2.0 and containing at least 98% of cis-1,4 bonds and up to 1.5% of trans-1,4 bonds. The composition is easy to mold and work, and the golf ball has good rebound and improved flight performance.
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Higuchi Hiroshi
Kaita Shojiro
Kataoka Nobuyuki
Nanba Atsushi
Wakatsuki Yasuo
Bridgestone Sports Co. Ltd.
Buttner David J.
Sughrue & Mion, PLLC
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