Patents Assigned to Volvik Inc.
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Patent number: 11779814Abstract: A golf ball according to an embodiment of the present disclosure is covered with an injection-molded crosslinked polyurethane. The golf ball may have excellent scuff resistance and light resistance of a cover as well as excellent driving distance and spin by using a cover composition containing crosslinked polyurethane obtained by adding a crosslinking agent to thermoplastic polyurethane (TPU). A polyurethane cover composition according to an embodiment can make it possible to prepare a crosslinked polyurethane cover by injection molding without the burden of facility investment cost.Type: GrantFiled: July 8, 2021Date of Patent: October 10, 2023Assignee: VOLVIK INC.Inventors: Chui Ho Song, Seung Geun Park, Geon Sim, Kyung Ahn Moon
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Patent number: 11602674Abstract: The present disclosure relates to a golf ball, wherein dimples having an extraordinary flight performance by combining the advantages of both circular dimples and polygonal dimples in the related art, in other words, by arranging the combined dimples that give depth to the face of the combined polygon and circle of the same center on the surface of the sphere, the trajectory is bent due to the influence of wind, which is a disadvantage of the conventional polygonal dimples. It is excellent in flight straightness by eliminating the effect, and when flying after hitting, the vertex region, which acts as a small bluff body, rotates and breaks the pressure in advance, causing a quick turbulent transition, and it becomes like an arc of a circular dimple instead of the sides of the general polygonal dimples.Type: GrantFiled: June 29, 2021Date of Patent: March 14, 2023Assignee: VOLVIK INC.Inventors: Kyung Ahn Moon, In Hong Hwang
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Patent number: 11058920Abstract: A surface of a sphere is divided by using not only great circles but also small circles, forming a spherical polyhedron. The spherical polyhedron includes two spherical regular pentagons, each having a center at the pole, ten spherical isosceles triangles near the pole, ten spherical pentagons near the equator, and ten other spherical isosceles triangles near the equator. Compared to a related art, dimples are accurately arranged in spherical polygons. Thus, a dimple area ratio is improved and the number of dimples is appropriately maintained.Type: GrantFiled: August 14, 2018Date of Patent: July 13, 2021Assignee: VOLVIK INC.Inventors: In Hong Hwang, Kyung Ahn Moon
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Patent number: 11045691Abstract: Provided is a spherical polyhedron division structure of a golf ball where dimples are arranged to have a well-defined symmetry and a dimple pattern. In the spherical polyhedron division structure, wherein an arbitrary point on a surface of a spherical body constituting a golf ball is defined as a pole, a great circle dividing the spherical body into a northern hemisphere and a southern hemisphere with respect to the pole as a reference point is defined as an equator, the surface of the spherical body is divided into six areas formed by segments connecting the pole and points obtained by dividing the equator in units of 60°, each area is divided into spherical polygons formed by four spherical rectangles and two spherical triangles having sides with different lengths, and the spherical polygons arranged in different adjacent areas are symmetric with each other.Type: GrantFiled: July 24, 2013Date of Patent: June 29, 2021Assignee: VOLVIK INC.Inventors: In Hong Hwang, Kyung Ahn Moon
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Patent number: 11033779Abstract: The present invention is a golf ball dividing method for symmetrically arranging dimples on a surface of a golf ball and a dimple arrangement method of arranging dimples along dividing lines based on sizes of dimples. The dimples having large diameters are effectively arranged on the deformed spherical triangle symmetrically over the entire surface of a sphere, so that it is possible to an effect of improving the flying stability and flight distance of the golf ball. Accordingly, it is possible to solve the problem of flying stability due to the lack of symmetry in the dimple arrangement method of the prior art for increasing an dimple area ratio by dividing the surface of the golf ball as a spherical octahedron and arranging dimples having large diameters, so that it is possible to improve a lift force to increase a flight distance and the flying stability of the golf ball.Type: GrantFiled: March 29, 2018Date of Patent: June 15, 2021Assignee: Volvik, Inc.Inventors: In-Hong Hwang, Kyung-Ahn Moon
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Patent number: 10850164Abstract: Disclosed is a carbon nanotube golf ball having improved hitting feel and durability, and antistatic property comprising: a core having CNT/ionomer-dispersion; a cover formed on the core; and an antistatic finish on the top cover. Herein, CNT/ionomer-dispersions having a diameter of 10 to 3,000 ?m are produced in advance using an independent process, and then applied to the present art. The top cover is provided with antistatic finish using a CNT coating solution for keeping the clean surface during the golf play.Type: GrantFiled: January 16, 2019Date of Patent: December 1, 2020Assignee: VOLVIK INC.Inventors: Chul Ho Song, Seung Geun Park, Kyung Ahn Moon
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Patent number: 10821326Abstract: Provided is a golf ball with air channels between adjacent dimples. The golf ball according to the present disclosure has air channels connecting adjacent dimples, and an outer tip of the air channel is chamfered or filleted. The problem of durability deterioration at the outer tip of the air channel over the entire surface of the golf ball is solved by the air channel structure in which the outer tip is chamfered or filleted. Meanwhile, it is possible to minimize the influence of wind at the outer tip of the air channel and greatly improve flight stability related with slice prevention, straightness and excellent impact point while ensuring a sufficient flight distance by uniformalizing pressure drag. In addition, the depth of the dimple itself is selectively made larger than the depth of the dimple of the conventional golf ball with the air channel in accordance with the chamfering or filleting of the outer tip of the air channel, thereby minimizing lift force and a loss of a flight distance.Type: GrantFiled: September 14, 2018Date of Patent: November 3, 2020Assignee: VOLVIK INC.Inventors: In Hong Hwang, Kyung Ahn Moon
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Publication number: 20200047034Abstract: Provided is a golf ball with air channels between adjacent dimples. The golf ball according to the present disclosure has air channels connecting adjacent dimples, and an outer tip of the air channel is chamfered or filleted. The problem of durability deterioration at the outer tip of the air channel over the entire surface of the golf ball is solved by the air channel structure in which the outer tip is chamfered or filleted. Meanwhile, it is possible to minimize the influence of wind at the outer tip of the air channel and greatly improve flight stability related with slice prevention, straightness and excellent impact point while ensuring a sufficient flight distance by uniformalizing pressure drag. In addition, the depth of the dimple itself is selectively made larger than the depth of the dimple of the conventional golf ball with the air channel in accordance with the chamfering or filleting of the outer tip of the air channel, thereby minimizing lift force and a loss of a flight distance.Type: ApplicationFiled: September 14, 2018Publication date: February 13, 2020Applicant: VOLVIK INC.Inventors: In Hong HWANG, Kyung Ahn MOON
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Patent number: 10532253Abstract: A polyurethane-ionomer hybrid resin composition for a golf ball cover having excellent elastic reaction force and backspin performance comprises 100 parts by weight of a modified ionomer having a number average molecular weight in a range of 1,000 to 2,400, provided as a reaction product generated by a reaction among a polyol including hydroxyl groups on opposing ends of the polyol, a monomer of acrylic acid or methacrylic acid having 2 to 3 functional groups, and zirconia, and modified in such a manner that a polyester oligomer in a zirconia complex state and a zirconia filled state is added to an ionomer resin to be reacted, and a portion of unsaturated carboxylic acid of an ionomer is neutralized to be zirconium and additionally polymerized to be the polyester oligomer; 20 to 40 parts by weight of a block polyurethane prepolymer with respect to 100 parts by weight of the modified ionomer; 70 to 100 parts by weight of the ionomer with respect to 100 parts by weight of the modified ionomer; and 1 to 10 partsType: GrantFiled: July 24, 2017Date of Patent: January 14, 2020Assignee: VOLVIK INC.Inventors: Chul Ho Song, In Hong Hwang, Kyung Ahn Moon
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Patent number: 10406403Abstract: Provided is a bismuth golf ball with improved carry distance and fracture strength by adding a nano bismuth reformed by using plasma or a nano bismuth alloy manufactured by using the nano bismuth to a resin composition as a base material as compared with a bismuth golf ball in the related art. Since the nano bismuth golf ball has a more densified internal structure due to a higher content of bismuth as compared with the bismuth golf ball, the resilient elasticity is improved, and thus, the carry distance is increased.Type: GrantFiled: May 16, 2018Date of Patent: September 10, 2019Assignee: VOLVIK INC.Inventors: Yoo Seok Hong, In Hong Hwang, Kyung Ahn Moon
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Patent number: 10245468Abstract: In a golf ball, dimples are arranged on a spherical polyhedron formed by dividing a surface of a sphere using small circles and great circles only on the equator, without arranging the dimples on a spherical polyhedron formed by dividing a surface of a sphere using great circles. The formed spherical polyhedron includes two spherical regular hexagons centered on a pole, twelve near-pole spherical isosceles triangles, twelve near-equator spherical pentagons, and twelve near-equator spherical isosceles triangles, in which the dimples are arranged. Thus, a dimple area ratio may be improved by 2 to 4%, compared to the prior art in which dimples are arranged in spherical polygons of a cubeoctahedron (or an octahedron) divided by great circles.Type: GrantFiled: March 27, 2018Date of Patent: April 2, 2019Assignee: VOLVIK INC.Inventors: In Hong Hwang, Kyung Ahn Moon
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Patent number: 10195487Abstract: Provided is a golf ball manufactured using a golf ball cover coating composition that reduces the influence of external light on a golfer during outdoor use due to low surface gloss and reduces damage to the surface of the golf ball caused by external impact due to excellent impact resistance and cutting resistance. The golf ball cover coating composition may include a base and a hardener. The base may include a modified polyester polyol resin and inorganic particles. The hardener may include a polyisocyanate resin having at least two isocyanate groups.Type: GrantFiled: December 9, 2016Date of Patent: February 5, 2019Assignee: VOLVIK INC.Inventors: Sang Woork Park, Byun Hoon Kang, Kyung Ahn Moon, Seung Jun Park
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Patent number: 10058739Abstract: Provided is a golf ball having a surface divided by small circles. A surface of a sphere is divided by small circles to generate spherical polyhedrons in order to arrange dimples in the spherical polygons, instead of arranging dimples in spherical polyhedrons that are generated by dividing the surface of the sphere by great circles. According to one or more exemplary embodiments, a land surface of the golf ball, which is generated by arranging the dimples in the spherical polyhedrons, has a dimple area ratio higher than that of a spherical truncated icosahedron of which a surface is divided by great circles on which dimples are arranged. Therefore, a flight distance of the golf ball increases.Type: GrantFiled: March 22, 2016Date of Patent: August 28, 2018Assignee: VOLVIK INC.Inventors: In Hong Hwang, Kyung Ahn Moon
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Patent number: 9873019Abstract: In a golf ball having a surface divided by triangular concave sectors, an area of a surface of a sphere is divided into a plurality of areas forming spherical polyhedron and a plurality of dimples are formed for each of the plurality of areas. A triangular concave sector is formed by continuously forming a plurality of triangular concave on each arc along great circles dividing the surface of the sphere into the plurality of areas. A planar shape of each of the plurality of triangular concave is a triangle and the bases of the triangular concaves are arranged on the arc along the great circles. Peaks of adjacent triangular concaves are located at opposite sides with respect to the arc along the great circles.Type: GrantFiled: April 26, 2016Date of Patent: January 23, 2018Assignee: VOLVIK INC.Inventors: In Hong Hwang, Kyung Ahn Moon
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Publication number: 20170296879Abstract: A surface of a sphere is divided by using not only great circles but also small circles, forming a spherical polyhedron. The spherical polyhedron includes two spherical regular pentagons, each having a center at the pole, ten spherical isosceles triangles near the pole, ten spherical pentagons near the equator, and ten other spherical isosceles triangles near the equator. Compared to a related art, dimples are accurately arranged in spherical polygons. Thus, a dimple area ratio is improved and the number of dimples is appropriately maintained.Type: ApplicationFiled: November 3, 2016Publication date: October 19, 2017Applicant: VOLVIK INC.Inventors: In Hong Hwang, Kyung Ahn Moon
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Patent number: 9776044Abstract: In a golf ball including dimples having coma shapes, the dimples are arranged such that one comma shaped dimple replaces a circular dimple, two or more comma shaped dimples of different sizes replace one circular dimple, comma shaped dimples having different shapes are arranged in a mixed type arrangement, circular dimples and comma shaped dimples are arranged in a mixed type arrangement, or a discontinuous annular dimple is added to the comma shaped dimples. Thus, a disadvantage of a large circular dimple may be removed and simultaneously a golf ball with stable flight capability and a long flight distance may be provided.Type: GrantFiled: April 26, 2016Date of Patent: October 3, 2017Assignee: VOLVIK, INC.Inventors: In Hong Hwang, Kyung Ahn Moon
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Patent number: D858665Type: GrantFiled: December 16, 2016Date of Patent: September 3, 2019Assignee: VOLVIK INC.Inventors: Sang-Woork Park, Kyung-Ahn Moon
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Patent number: D868912Type: GrantFiled: May 9, 2017Date of Patent: December 3, 2019Assignee: VOLVIK, INC.Inventor: Jeong Mook Kim
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Patent number: D891941Type: GrantFiled: July 11, 2018Date of Patent: August 4, 2020Assignee: VOLVIK, INC.Inventor: Jeong Mook Kim
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Patent number: D952779Type: GrantFiled: July 8, 2020Date of Patent: May 24, 2022Assignee: VOLVIK INC.Inventor: Jeong Mook Kim