| Patent Number |
Title Of Patent |
Date Issued |
| 7614965 |
Golf ball |
November 10, 2009 |
| The present invention relates to a golf ball having a ball component made of a material molded under heat from a rubber composition which includes: (A) from 1 to 50 parts by weight of a modified polybutadiene obtained by a modification reaction wherein a polybutadiene having a vinyl co |
| 7566280 |
Golf ball |
July 28, 2009 |
| The invention provides a golf ball having a ball component made of a material molded under heat from a rubber composition of (a) a base rubber which includes a polybutadiene of at least 40% cis-1,4 structure, (b) an unsaturated carboxylic acid and/or a metal salt thereof, (c) an organic |
| 7563182 |
Polymer composition and golf ball made using the same |
July 21, 2009 |
| The present invention provides a polymer composition which includes (A) an olefin-unsaturated carboxylic acid random copolymer and/or an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester random copolymer, (D) a metal ion neutralization product of an olefin-unsatura |
| 7563181 |
Golf ball |
July 21, 2009 |
| The present invention provides a golf ball having a core, an inner cover layer and an outer cover layer. The core is made of a material obtained by molding under heat a rubber composition containing (a) a base rubber containing polybutadiene having a stress relaxation time (T.sub.80), (b |
| 7563179 |
Golf ball |
July 21, 2009 |
| The present invention provides a golf ball having a core and a cover of one or more layer, wherein the core is made of a material obtained by molding under heat a rubber composition which includes (a) a base rubber containing polybutadiene having a stress relaxation time (T.sub.80) of |
| 7559856 |
Golf ball |
July 14, 2009 |
| The present invention provides a golf ball having a core and a cover of one or more layer. The core is made of a material obtained by molding under heat a rubber composition containing (a) polybutadiene having a stress relaxation time (T.sub.80) of 3.5 or less, (b) an unsaturated car |
| 7559855 |
Golf ball |
July 14, 2009 |
| The present invention provides a golf ball having a core, an inner cover layer and an outer cover layer. The core is made of a material obtained by molding under heat a rubber composition containing (a) a base rubber containing polybutadiene having a stress relaxation time (T.sub.80), (b |
| 7557165 |
Rubber molding product for golf ball, its making method and golf ball |
July 7, 2009 |
| A molded rubber material for golf balls which is obtained by molding and curing a rubber compound composed of base rubber and such ingredients as crosslinking agent, co-crosslinking agent, and vulcanization accelerator, wherein the base rubber is polybutadiene which results from poly |
| 7534835 |
Golf ball |
May 19, 2009 |
| A golf ball is composed at least in part of a material molded under heat from a rubber composition which includes: (a) a base rubber composed primarily of a mixture of at least 60 wt % of a polybutadiene having a stress relaxation time (T.sub.80), defined as the length of time it takes |
| 7530905 |
Molded rubber material for golf ball, method of producing the material, and golf ball |
May 12, 2009 |
| The invention provides a molded rubber material for a golf ball which is obtained by molding and vulcanizing a rubber composition that includes a portion of a master batch prepared by mixing together a synthetic rubber, an unsaturated carboxylic acid metal salt and a higher fatty acid or |
| 7407449 |
Golf ball |
August 5, 2008 |
| The present invention provides a golf ball having a core, an outermost cover layer and an intermediate layer therebetween. The core is made of a material obtained by molding under heat a rubber composition containing polybutadiene having a stress relaxation time (T.sub.80) of 3.5 or less |
| 7381776 |
Crosslinked rubber moldings for golf balls and method of manufacture |
June 3, 2008 |
| The invention provides crosslinked rubber moldings for golf balls obtained by spherically molding and crosslinking a rubber composition containing a base rubber, a co-crosslinking agent and a crosslinking agent, then impregnating the crosslinked rubber molding with a rubber compounding |
| 7294067 |
Golf ball |
November 13, 2007 |
| A golf ball having, as a constituent element, an article molded under heat from a rubber composition which includes: (a) a base rubber containing polybutadiene having a stress relaxation time (T.sub.80), defined as the time in seconds from the moment when rotor rotation is stopped im |
| 7291675 |
Golf ball rubber compositions and golf balls |
November 6, 2007 |
| A rubber composition for a one-piece golf ball or for a solid core of a solid golf ball having a multilayer construction in which the core is enclosed directly, or with an intermediate layer, by a cover includes (a) 100 parts by weight of a base rubber, (b) 10 to 60 parts by weight of a |
| 7276560 |
Solid golf ball |
October 2, 2007 |
| The present invention provides a solid golf ball comprising a hot-molded product of a rubber composition comprising (a) 100 parts by weight of a polybutadiene synthesized using a rare-earth catalyst and having a cis-1,4 content of at least 60% and a 1,2 vinyl content of at most 2%, h |
| 7250010 |
Golf ball |
July 31, 2007 |
| The present invention provides a golf ball composed at least in part of a material molded under heat from a rubber composition containing (a) a diene base rubber, (b) an .alpha.,.beta.-unsaturated carboxylic acid and/or a metal salt thereof, and (c) an organic peroxide which includes |
| 6670422 |
Golf ball and rubber composition therefor |
December 30, 2003 |
| A rubber composition comprising 100 parts by weight of a base rubber containing 5-30% by weight of syndiotactic-1,2-polybutadiene and at least 40% by weight of cis-1,4-polybutadiene, 5-10 parts by weight of an unsaturated carboxylic acid metal salt, up to 2 parts by weight of an inor |
| 6620061 |
Golf ball |
September 16, 2003 |
| In a golf ball comprising a core and an enclosure of one or more layers enclosing the core, at least one enclosure layer is formed of a rubber composition comprising a base rubber based on 1,4-polybutadiene having a cis-1,4-structure, an .alpha.,.beta.-unsaturated carboxylic acid, a meta |
| 6527651 |
Wound golf ball |
March 4, 2003 |
| In a wound golf ball comprising a solid center, a thread rubber layer, and a cover, the solid center has a diameter of 29-37 mm, has such a hardness distribution that the hardness at the outer surface is lower than the hardness at a middle and the difference between the maximum and the |
| 6379268 |
Golf ball |
April 30, 2002 |
| A golf ball comprising a core, a cover inner layer and a cover outer layer has a plurality of dimples on the surface. The JIS-C hardness of the ball decreases successively within specific ranges from the cover outer layer to the cover inner layer to the core surface, but is substantially |
| 6184301 |
Solid golf ball |
February 6, 2001 |
| The solid golf ball of the invention is a one-piece golf ball or a multi-piece golf ball having a solid core enclosed directly in a cover or with an intermediate layer disposed therebetween. The one-piece golf ball or the solid core and/or intermediate layer of the multi-piece golf ball |
| 6045461 |
Two-piece solid golf ball |
April 4, 2000 |
| A two-piece solid golf ball comprising a solid core and a cover has a specific gravity of 1.0-1.1. The cover has a Shore D hardness of at least 60. The ball satisfies 1.10.ltoreq.A/B.ltoreq.1.60 wherein A and B are distortions (mm) of the solid core and the ball under a load of 100 kg, |
| 5820492 |
Golf ball |
October 13, 1998 |
| A golf ball comprising a solid core, and a cover enclosing the core and having a multiplicity of dimples formed therein has a diameter of 42.70.+-.0.05 mm and a specific gravity of 1.05.+-.0.05. The cover is composed mainly of an ionomer resin and has a Shore D hardness of at least 6 |
| 5803834 |
Two-piece solid golf ball |
September 8, 1998 |
| In a two-piece solid golf ball comprising a solid core and a cover having a number of dimples, the solid core has such a distribution of hardness on a JIS-C hardness scale that a surface hardness is 70-85 degrees and a center hardness is lower than the surface hardness by 8-20 degrees, a |
| 5782703 |
Practice golf ball |
July 21, 1998 |
| A practice golf ball having a multiplicity of dimples formed in its surface has a weight of 46.5-49.0 grams and undergoes a distortion of 2.5-4.0 mm under a constant load of 100 kg. Those dimples having a diameter/depth (Dm/Dp) ratio between 10/1 and 15/1 occupy at least 80% of the total |
| 5782702 |
Practice golf ball |
July 21, 1998 |
| A practice golf ball having a multiplicity of dimples formed in its surface has a weight of 46.5-49.0 grams and undergoes a distortion of 2.5-4.0 mm under a constant load of 100 kg. A percent dimple volume Vr is in the range of 0.7%.ltoreq.Vr.ltoreq.1.1% wherein the percent dimple volume |
| 5601503 |
Golf ball |
February 11, 1997 |
| A golf ball having a multiplicity of dimples in its surface is adjusted to a weight of 40 to 45 grams and a diameter of 43 to 47 mm. The dimples occupy at least 60% of the ball surface and satisfy 0.35.ltoreq.V.sub.0 .ltoreq.0.60 wherein V.sub.0 is the volume of the dimple space below a |
