Patent application number | Description | Published |
20080305891 | Golf ball | 12-11-2008 |
20090054175 | Golf ball | 02-26-2009 |
20090054176 | Golf ball | 02-26-2009 |
20090091058 | GOLF BALL - The present invention provides a golf ball having excellent rebound characteristics and excellent flight performance, while maintaining good durability and good appearance. The present invention relates to a golf ball comprising a core composed of a center and at least one intermediate layer formed on the center, and a cover covering the. core, and having many dimples on the surface thereof, wherein the outermost layer of the intermediate layer is formed from thermoplastic resin, has a thickness of 0.5 to 3.0 mm, and has depressions on the surface thereof at the position and shape corresponding to the dimples through the cover, and the cover is formed from thermoplastic resin and has a thickness of 0.1 to 0.8 mm in land portion having no dimple. | 04-09-2009 |
20090091060 | GOLF BALL - The present invention provides a golf ball having excellent rebound characteristics and flight performance, while maintaining good durability and appearance. The present invention relates to a golf ball comprising a center, an intermediate layer and a cover, the intermediate layer comprises an outermost layer and a second layer adjacent to the underside of the outermost layer, and the cover has many dimples on the surface thereof, wherein the second layer is formed from thermoplastic resin and has a thickness of 0.5 to 2.0 mm, the outermost layer is formed from thermosetting or thermoplastic resin and has a thickness of 1 to 100 μm, the intermediate layer has depressions on the surface thereof at the position and shape corresponding to the dimples through the cover, and the cover is formed from thermoplastic resin and has a thickness of 0.1 to 0.8 mm in land portion having no dimple. | 04-09-2009 |
20090312121 | GOLF BALL | 12-17-2009 |
20100069173 | GOLF BALL - An object of the present invention is to provide a golf ball excellent in fluidity, adhesion of the paint film, and repulsion. Another object of the present invention is to provide a golf ball which is excellent in durability and low-temperature durability. The present invention provides a golf ball comprising: a core and a cover covering the core, wherein the cover is formed from a cover composition that contains as a resin component, (a) a specific high melt viscosity ionomer resin being neutralized with at least two metal ions, and (b) a low melt viscosity ionomer resin being neutralized with at least two metal ions, in a ratio of (a) the high melt viscosity ionomer resin/(b) the low melt viscosity ionomer resin being 55 mass % to 99 mass %/45 mass % to 1 mass %, wherein at least one of metal ions neutralizing carboxyl groups of (a) the high melt viscosity ionomer resin and/or (b) the low melt viscosity ionomer resin is a divalent metal ion and a content of the divalent metal ion per 100 g of the resin component is at least 0.020 mole. | 03-18-2010 |
20100087275 | GOLF BALL - An object of the invention is to provide a golf ball excellent in the durability at the normal and low temperatures, flight distance, and shot feeling on the shots. Another object of the present invention is to provide a golf ball excellent in a direction stability on the shots. The present invention provides a golf ball comprising: a core consisting of at least one layer; and a cover covering the core and having a thickness ranging from 0.3 mm to 1.0 mm, wherein the cover is formed from a cover composition that contains as a resin component, (A) a highly elastic polyamide resin (B) a metal-neutralized product of binary copolymer and/or ternary copolymer, and (C) a resin having a polar functional group in a specific amount, and wherein the cover composition has a slab hardness ranging from 65 to 75 in Shore D hardness. | 04-08-2010 |
20100160080 | GOLF BALL - A first golf ball | 06-24-2010 |
20100167840 | GOLF BALL - An object of the invention is to provide a golf ball excellent in the durability at the normal and low temperatures, flight distance, direction stability and shot feeling on the shots. The present invention provides a golf ball comprising: a core consisting of a center having a diameter of 35 mm or less and a surrounding layer covering the center; at least one intermediate layer covering the core, said intermediate layer having a thickness ranging from 0.5 mm to 1.2 mm and a density of 1.10 g/cm | 07-01-2010 |
20100167846 | GOLF BALL - A golf ball | 07-01-2010 |
20110111888 | GOLF BALL | 05-12-2011 |
20110160000 | GOLF BALL | 06-30-2011 |
20110201454 | GOLF BALL - A golf ball having a spherical core, a mid layer covering this core, a reinforcing layer covering this mid layer, and a cover covering this reinforcing layer, wherein the base polymer of the mid layer includes a styrene block-containing thermoplastic elastomer and an ionomer resin; the mid layer has a hardness as measured with a Shore D type hardness scale of equal to or less than 54; the mid layer has a thickness of 0.5 mm or greater and 1.6 mm or less; and the base polymer of the reinforcing layer is a reaction product between carboxyl group-containing polyurethane and polycarbodiimide. The principal component of the base polymer of the cover is an ionomer resin. The cover has a hardness as measured with a Shore D type hardness scale hardness of equal to or greater than 55 and the cover has a thickness of equal to or less than 1.2 mm. | 08-18-2011 |
20110244986 | GOLF BALL - An object of the present invention is to provide a golf ball excellent in resilience and durability, with a good moldability of the intermediate layer. The present invention provides a golf ball having a center, a cover, and an intermediate layer disposed between the center and the cover, wherein the intermediate layer is formed from an intermediate layer composition having a flexural modulus ranging from 150 MPa to 450 MPa, a maximum loss factor (tan δ) between −20° C. and 0° C. of 0.08 or less, a rebound resilience of 55% or more, and a slab hardness ranging from 40 to 60 in Shore D hardness, and the intermediate layer composition comprises, as a resin component, 30 mass % to 70 mass % of (A) a modified polyester elastomer having a Shore A hardness of 95 or less; 70 mass % to 30 mass % of (B) a binary ionomer resin having a Shore D hardness of 65 or more, a flexural modulus of 300 MPa or more, and a melt flow rate (190° C., 2.16 kg) of 1.0 g/10 min or more; and 0 mass % to 50 mass % of (C) a thermoplastic resin other than (A) component and (B) component (provided that a total content of (A) component, (B) component, and (C) component is 100 mass %). | 10-06-2011 |
20110244989 | GOLF BALL - An object of the present is to provide a golf ball having a high spin rate on approach shots under the wet condition and rough condition. The present invention provides a golf ball comprising a golf ball body, and a paint film formed on a surface of the golf ball body, wherein the paint film has a martens hardness of 2.0 mgf/μm | 10-06-2011 |
20110250991 | GOLF BALL - A golf ball | 10-13-2011 |
20110319193 | GOLF BALL - A golf ball | 12-29-2011 |
20120010021 | GOLF BALL - An object of the present invention is to provide a golf ball traveling a greater distance by improving the properties of the spherical core. The present invention provides a golf ball comprising a spherical core, and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing a base rubber, a co-crosslinking agent, a crosslinking initiator, a filler and a polynuclear aromatic organic sulfur compound or a derivative thereof, and the spherical core has a specific hardness distribution without decreasing hardness from a central point toward a surface of the spherical core in JIS-C hardness. | 01-12-2012 |
20120010024 | GOLF BALL - A golf ball | 01-12-2012 |
20120015763 | GOLF BALL | 01-19-2012 |
20120021852 | GOLF BALL - A golf ball | 01-26-2012 |
20120165123 | GOLF BALL - A golf ball | 06-28-2012 |
20120172152 | GOLF BALL - A golf ball | 07-05-2012 |
20130005506 | GOLF BALL - A golf ball | 01-03-2013 |
20130005508 | GOLF BALL - A golf ball | 01-03-2013 |
20130053180 | GOLF BALL - A golf ball | 02-28-2013 |
20130172113 | GOLF BALL - A golf ball | 07-04-2013 |
20130196791 | GOLF BALL - A golf ball | 08-01-2013 |
20130288824 | GOLF BALL - A golf ball | 10-31-2013 |
20130303308 | GOLF BALL - A first golf ball | 11-14-2013 |
20130324313 | GOLF BALL - A golf ball | 12-05-2013 |
20130324315 | GOLF BALL - A golf ball | 12-05-2013 |
20130324316 | GOLF BALL - A golf ball | 12-05-2013 |
20130324318 | GOLF BALL - The present invention provides a golf ball comprising a golf ball body with a spherical core having one or more layers, an intermediate layer disposed outside the spherical core and a cover disposed outside the intermediate layer and a paint film formed on a surface of the golf ball body, and having a friction coefficient calculated using a contact force tester of 0.35 or more and 0.60 or less, wherein the golf ball body has specific plurality of dimples on the surface thereof, at least one layer of the spherical core is a rubber layer having a specific hardness distribution, and the rubber layer has a hardness at the outermost point which is greater than a hardness at the innermost point, and the intermediate layer has a slab hardness (Hm) which is greater than a slab hardness (Hc) of the cover. | 12-05-2013 |
20130324320 | GOLF BALL - The present invention provides a golf ball comprising a spherical core composed of a spherical inner core layer and an outer core layer, an intermediate layer and a cover, wherein the inner core layer has a hardness difference (Hs1-Ho) between a surface hardness (Hs1) and a center hardness (Ho) of 5 or less in JIS-C hardness, the outer core is such that R | 12-05-2013 |