EP 2656882 A1 20131030 - Golf ball
Title (en)
Golf ball
Title (de)
Golfball
Title (fr)
Balle de golf
Publication
Application
Priority
- JP 2012099641 A 20120425
- JP 2012116542 A 20120522
- JP 2012118422 A 20120524
- JP 2012118544 A 20120524
- JP 2012124249 A 20120531
- JP 2012124924 A 20120531
Abstract (en)
A golf ball 2 includes a spherical core 4, an inner mid layer 6, an outer mid layer 8, a reinforcing layer 10, and a cover 12. When distances (%) from a central point of the core 4 to nine points and JIS-C hardnesses at the nine points, which nine points are obtained by dividing a region from the central point of the core 4 to a surface of the core 4 at intervals of 12.5% of a radius of the core 4, are plotted in a graph, R 2 of a linear approximation curve obtained by a least-square method is equal to or greater than 0.95. Hm1 is greater than Hm2. Hc is less than Hm1. T2 is equal to or greater than 0.5 mm but equal to or less than 1.6 mm.
IPC 8 full level
A63B 37/00 (2006.01)
CPC (source: EP US)
A63B 37/0054 (2013.01 - US); A63B 37/0059 (2013.01 - EP US); A63B 37/0063 (2013.01 - EP US); A63B 37/0092 (2013.01 - EP US); A63B 37/0043 (2013.01 - EP US); A63B 37/0044 (2013.01 - EP US); A63B 37/0076 (2013.01 - EP US)
Citation (applicant)
- JP S6137178 A 19860222 - SUMITOMO RUBBER IND
- JP 2008212681 A 20080918 - BRIDGESTONE SPORTS CO LTD
- US 2008214324 A1 20080904 - NANBA ATSUSHI [JP], et al
- JP 2008523952 A 20080710
- US 2006135287 A1 20060622 - KENNEDY THOMAS J III [US], et al
- US 2007173607 A1 20070726 - KENNEDY THOMAS J III [US], et al
- JP 2009119256 A 20090604 - BRIDGESTONE SPORTS CO LTD
- US 2009124757 A1 20090514 - SHINDO JUN [JP], et al
- JP H06154357 A 19940603 - SUMITOMO RUBBER IND
- US 5403010 A 19950404 - YABUKI YOSHIKAZU [JP], et al
- JP 2008194471 A 20080828 - BRIDGESTONE SPORTS CO LTD
- US 7344455 B1 20080318 - HIGUCHI HIROSHI [JP]
- US 2008194358 A1 20080814 - HIGUCHI HIROSHI [JP]
- US 2008194359 A1 20080814 - HIGUCHI HIROSHI [JP], et al
- US 2008214325 A1 20080904 - HIGUCHI HIROSHI [JP], et al
- JP 2008194473 A 20080828 - BRIDGESTONE SPORTS CO LTD
- US 2008194357 A1 20080814 - HIGUCHI HIROSHI [JP]
- US 2008312008 A1 20081218 - HIGUCHI HIROSHI [JP], et al
- JP 2010253268 A 20101111 - BRIDGESTONE SPORTS CO LTD
- US 2010273575 A1 20101028 - WATANABE HIDEO [JP]
Citation (search report)
- [X] US 2011159998 A1 20110630 - OHAMA KEIJI [JP], et al
- [X] US 2009227394 A1 20090910 - BULPETT DAVID A [US], et al
- [A] US 2012088604 A1 20120412 - MATSUYAMA YOSHIKO [JP], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2656882 A1 20131030; EP 2656882 B1 20210609; CN 103372285 A 20131030; CN 103372285 B 20160420; EP 3329971 A1 20180606; EP 3329971 B1 20201118; US 2013288824 A1 20131031; US 2017304684 A1 20171026
DOCDB simple family (application)
EP 13164343 A 20130418; CN 201310146454 A 20130424; EP 17192516 A 20130418; US 201313827803 A 20130314; US 201715649273 A 20170713