Patents by Inventor Sotaro Iwabuchi

Sotaro Iwabuchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210197623
    Abstract: A tire includes a circumferential direction groove and plural protrusions. The circumferential direction groove is formed in a tread face so as to open toward an outer side in a tire radial direction. The plural protrusions are formed so as to project to a projection height of from 0.1 mm to 1.0 mm from a groove bottom face or a groove side face of the circumferential direction groove, and are spaced apart by a spacing of from 0.1 mm to 1.0 mm.
    Type: Application
    Filed: June 7, 2019
    Publication date: July 1, 2021
    Inventors: Sotaro IWABUCHI, Yusaku ISHIGURO, Hikaru INAGAKI, Keiichi KATO
  • Publication number: 20210188018
    Abstract: Provided is a tire including: a decorative portion that is formed on an outer surface of the tire and that has a base surface; and a pattern region that is provided at the decorative portion and that formed with plural projections projecting at a height of from 0.1 mm to 1.0 mm from the base surface and formed at an interval of from more than 0.1 mm to 1.0 mm, in which the pattern region is provided with a gradual decrease region in which a height of the plural projections disposed adjacent to each other gradually decreases.
    Type: Application
    Filed: December 5, 2018
    Publication date: June 24, 2021
    Inventors: Sotaro IWABUCHI, Takayuki FUKUNAGA
  • Publication number: 20210129597
    Abstract: A tire includes protrusions having a hexagonal shape in plan view and formed on an outer surface of the tire, in which a height of the protrusions is set to be from 0.2 mm to 0.5 mm and the protrusions adjacent to each other are arranged at a pitch of from 0.15 mm to 0.4 mm.
    Type: Application
    Filed: January 26, 2017
    Publication date: May 6, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Sotaro IWABUCHI
  • Publication number: 20200391557
    Abstract: A tire including a decorative portion that is formed at a tire side portion (tire outer face) and that includes a base face, and a first patterned region and a second patterned region, in each of which a plurality of protrusions, that project from the base face of the decorative portion to a projection height of from 0.1 mm to 1.0 mm, are formed at a pitch of from 0.1 mm to 1.0 mm. Shapes of the protrusions in the first patterned region and the second patterned region are different from each other as viewed along a direction orthogonal to the base face.
    Type: Application
    Filed: November 30, 2018
    Publication date: December 17, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Sotaro IWABUCHI
  • Patent number: 10850572
    Abstract: A tire including a pattern region and plural unit patterns. The pattern region is formed at an outer surface of a tire and includes a base. The plural unit patterns are formed within the pattern region, and each unit pattern is formed including extension portions having a projection height from the base of from 0.1 mm to 1.0 mm. The extension portions extend in plural directions from a bend point in plan view. A spacing between the bend points of adjacent unit patterns out of the unit patterns is from 0.2 mm to 1.0 mm.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: December 1, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Atsushi Miyasaka, Sotaro Iwabuchi
  • Publication number: 20200369092
    Abstract: A tread portion includes a tread surface, and a groove that partitions the tread surface and has a ratio of a groove width to a groove depth from 0.5 to 8.0. Plural protrusions protrude from a bottom surface of the groove, the plural protrusions have a height from 0.1 mm to 1.0 mm and are arranged having an interval of greater than 0.1 mm and less than or equal to 1.0 mm.
    Type: Application
    Filed: December 3, 2018
    Publication date: November 26, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Sotaro IWABUCHI
  • Publication number: 20200369094
    Abstract: Provided is a tire including: a decorative portion that is formed on an outer surface of the tire and has a base surface; and a pattern region that is provided at the decorative portion and includes plural projections projecting from the base surface and formed at an interval of from more than 0.1 mm to 1.0 mm, the plural projections having a height of from 0.1 mm to 1.0 mm, in which at least in the pattern region, the plurality of projections is inclined in one direction with respect to a normal line perpendicular to the base surface.
    Type: Application
    Filed: December 5, 2018
    Publication date: November 26, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Sotaro IWABUCHI, Takayuki FUKUNAGA
  • Publication number: 20200369095
    Abstract: A tire includes a first pattern region in which are formed plural first projections, the first projections protruding at a protrusion height of from 0.1 mm to 1.0 mm from a base surface of a decorative trim portion, and a pitch between each of the first projections being of from 0.1 mm to 1.0 mm, and a second pattern region in which are formed plural second projections, the second projections protruding at a protrusion height of from 0.1 mm to 1.0 mm from the base surface of the decorative trim portion, and a pitch between each of the second projections being of from 0.1 mm to 1.0 mm. The pitches between each of the first projections and the pitches between each of the second projections are the same, while the protrusion height of the first projections and the protrusion height of the second projections are different from each other.
    Type: Application
    Filed: December 3, 2018
    Publication date: November 26, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Sotaro IWABUCHI
  • Publication number: 20200307323
    Abstract: A tire that can suppress an unused tire from giving an impression like a worn tire as compared with a case where the brightness of a tread surface and the brightness of a bottom surface of a groove are the same is obtained. The tread portion includes a tread portion including a tread surface and a groove that partitions the tread surface; and a plurality of protrusions that protrude from a bottom surface of the groove at a height of from 0.1 mm to 1.0 mm and are arranged at an interval of from more than 0.1 mm to 1.0 mm. A ratio of a height of the protrusions to a depth of the groove (protrusion height/groove depth) is from 0.02 to 0.2.
    Type: Application
    Filed: December 3, 2018
    Publication date: October 1, 2020
    Inventor: Sotaro IWABUCHI
  • Publication number: 20200290406
    Abstract: Provided is a tire including: a decorative part having a base surface; and a first patterned region in which plural first protrusions protruding from the base surface of the decorative part at a protrusion height of from 0.1 mm to 1.0 mm and intervals of larger than 1.0 mm and 3.0 mm or smaller are formed.
    Type: Application
    Filed: December 3, 2018
    Publication date: September 17, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Sotaro IWABUCHI
  • Publication number: 20200276869
    Abstract: A tire has: a decorative portion that is formed at a tire side portion a tire outer surface) and has a base surface; and a first low brightness region and second low brightness regions (a plurality of first pattern regions) at which plurality of projections, which project-out from the base surface of the decorative portion at a projecting height of from 0.1 [mm] to 1.0 [mm], are formed at intervals of from 0.1 [mm] to 1.0 [mm]. Intervals between the projections differ from one another in the plurality of first pattern regions.
    Type: Application
    Filed: November 30, 2018
    Publication date: September 3, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Sotaro IWABUCHI
  • Patent number: 10759232
    Abstract: A tire includes: a pattern portion, in which plural ridges having ridgelines are arranged adjacent to each other, on a tire surface, the ridgelines including a main body portion and a first extending portion and a second extending portion that extend in different directions from the main body portion in plan view, in which the first extending portion of a ridge and the second extending portion of an adjacent ridge at least partially overlap each other when viewed from a direction orthogonal to an adjacent direction of the ridges, a height of the ridge is from 0.2 mm to 0.5 mm, and ridges adjacent to each other are arranged at a constant pitch of from 0.15 mm to 0.35 mm.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: September 1, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Sotaro Iwabuchi, Shiho Kamada
  • Patent number: 10752058
    Abstract: A tire including a decorative patterned portion that is formed on a tire surface, and that is configured including plural first projections extending in a first direction in plan view and arranged spaced apart from each other in a second direction orthogonal to the first direction, and plural second projections arranged between neighboring first projections and arranged spaced apart from each other in the first direction. In plan view, each of the second projections includes a bend portion and plural extension portions extending from the bend portion.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: August 25, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Sotaro Iwabuchi
  • Patent number: 10730353
    Abstract: A tire includes: a first pattern portion and a second pattern portion on a tire surface, the first pattern portion being formed of plural first ridges adjacent to each other and the second pattern portion being formed of plural second ridges extending in a different direction from the first ridges in plan view arranged adjacent to each other, in which a height of the first ridges and the second ridges is from 0.2 mm to 0.5 mm and the first ridges adjacent to each other and the second ridges adjacent to each other are arranged at a constant pitch of from 0.15 mm to 0.35 mm.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: August 4, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Sotaro Iwabuchi
  • Patent number: 10596857
    Abstract: First direction ridge patterns and second direction ridge patterns are lined-up alternately at a decorative concave portion 18. Plural main ridges 22A through 22D and sub-ridges 26A through 26D, which project-out from a bottom surface 18A, are formed at a first direction ridge pattern 20. The respective ridges are disposed in parallel such that ridge extending directions are a same direction. Light reflection patterns are different at a main ridge region 24, 34 and a sub-ridge region 28, 38.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: March 24, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Sotaro Iwabuchi
  • Patent number: 10596858
    Abstract: First direction ridge patterns and second direction ridge patterns are lined-up alternately at a tire side portion. Plural main ridges 22A through 22D and sub-ridges 26A through 26D, which project-out from a bottom surface 18A, are formed at a first direction ridge pattern 20. The respective ridges are disposed in parallel such that ridge extending directions are a same direction. Light reflection patterns are different at a main ridge region 24 and a sub-ridge region 28.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: March 24, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Sotaro Iwabuchi
  • Patent number: 10596859
    Abstract: Main ridges of a first direction ridge pattern 50 and a second direction ridge pattern 60 that are adjacent to one another are connected together. Due thereto, the main ridges are connected as one ridge from one end to another end of a decorative concave portion 48, and a continuous main ridge 51 is formed.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: March 24, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Sotaro Iwabuchi
  • Patent number: 10532614
    Abstract: Provided is a tire in which, by improving a decorative portion provided on a side portion, while a high visibility and a crack resistance are secured, molding man-hours are reduced, thereby improving a moldability and a cost performance.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: January 14, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Sotaro Iwabuchi
  • Patent number: D867982
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: November 26, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Sotaro Iwabuchi
  • Patent number: D906951
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: January 5, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Sotaro Iwabuchi