Patents by Inventor Kohei Sahashi

Kohei Sahashi 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: 20220250414
    Abstract: In regions, divided by a tire equator, on both sides of a tread surface of a tire, the tire includes a grip area along an entire circumference of a tread, the grip area including a plurality of recessed lines, with a shape recessed toward an inner side of the tire from an outline of the tread surface, that extend from a tread edge side in a direction inclined relative to the tire equator and are arrayed in parallel, and in each region, a recessed portion defined by two lines, extending radially towards the grip area from a point positioned in a direction of the grip area from the tire equator, and a line connecting tips of the two lines.
    Type: Application
    Filed: December 10, 2019
    Publication date: August 11, 2022
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Kohei SAHASHI
  • Publication number: 20220234390
    Abstract: A tire includes a plurality of buffer recessed portions (40) compression-deformable in a tire radial direction that are arranged in a tire circumferential direction over an entire area in the tire circumferential direction on an outer surface of a buttress portion (12) connected to an end portion of a tread surface portion (11) of the tire in a tire width direction, in which in a plan view of the buttress portion, an opening peripheral edge of the buffer recessed portion has a hexagonal shape including six side portions (41, 42), and the buffer recessed portions adjacent to each other in the tire circumferential direction are arranged such that one of the six side portions of one of the buffer recessed portions faces one of the six side portions of the other of the buffer recessed portions in the tire circumferential direction.
    Type: Application
    Filed: March 18, 2020
    Publication date: July 28, 2022
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Kohei SAHASHI
  • Publication number: 20220203772
    Abstract: A tire includes a sipe, on a surface of a tread of a tire, extending across a tire equator from one side to another side of the tire equator. An end of the sipe on at least the one side is located at a tread edge or near the tread edge, and an inclination angle of the sipe relative to a width direction of the tread decreases from the tire equator towards the tread edge.
    Type: Application
    Filed: December 10, 2019
    Publication date: June 30, 2022
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Kohei SAHASHI
  • Publication number: 20220176749
    Abstract: In regions, divided by the tire equator, on both sides of the tread surface of a tire, the tire includes a grip area along the entire circumference of the tread, the grip area including a plurality of recessed lines, with a shape recessed toward an inner side of the tire from the outline of the tread surface, that extend from the tread edge side in a direction inclined relative to the tire equator and are arrayed in parallel, and a plurality of sipes that extend toward the tire equator in a direction inclined relative to the tire equator, starting in the grip area and terminating before the tire equator. The negative ratio in the grip area is higher than the negative ratio closer to the tire equator than the grip area.
    Type: Application
    Filed: December 10, 2019
    Publication date: June 9, 2022
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Kohei SAHASHI
  • Publication number: 20220016935
    Abstract: In a tire, a plurality of outer resonators (25) are formed in an outer land portion (28) partitioned by two outer main grooves (21, 22) and arranged in a tire circumferential direction, a plurality of inner resonators (26) are formed in an inner land portion (29) partitioned by two inner main grooves (23, 24) and arranged in the tire circumferential direction, the outer resonator includes a first vertical groove (31) which extend in the tire circumferential direction, and a first branch groove (32) and a second branch groove (33) which have an inner volume smaller than that of the first vertical groove, extend in the tire width direction from both end portions of the first vertical groove in the tire circumferential direction such that the first branch groove and the second branch groove extend in directions opposite to each other, and are respectively opened to the two outer main grooves, and the inner resonator includes a second vertical groove (36) which extends in the tire circumferential direction, and a
    Type: Application
    Filed: March 18, 2020
    Publication date: January 20, 2022
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Kohei SAHASHI, Shungo FUJITA
  • Publication number: 20210275328
    Abstract: A sole for a prosthetic leg is a sole which is attached to a ground contact region of the prosthetic leg with a road surface and includes a through hole at least on a partial region.
    Type: Application
    Filed: July 22, 2019
    Publication date: September 9, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Dyta ITOI, Kohei SAHASHI
  • Publication number: 20210161684
    Abstract: A sole of an athletic prosthetic leg, wherein the sole is attached to a ground contact region of the athletic prosthetic leg which has a leaf-spring-like leg portion extending to a side of a toe via at least one curved portion, the ground contact region extending from the toe to a side of the curved portion in an arc, wherein the sole includes a bottom surface having a shape conforming to an extending shape of the ground contact region, and the bottom surface includes at least one sipe linearly extending at a portion which continues at a constant radius of curvature from the toe, and the sipe terminates in the bottom surface.
    Type: Application
    Filed: April 17, 2019
    Publication date: June 3, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Dyta ITOI, Kohei SAHASHI
  • Publication number: 20210161683
    Abstract: In a sole which is attached to a ground contact region of an athletic prosthetic leg which has a leaf-spring-like leg portion extending to a side of a toe via at least one curved portion, the ground contact region extending from the toe to a side of the curved portion in an arc, the sole includes a bottom surface having a shape conforming to an extending shape of the ground contact region, and, in the bottom surface, a region at the side of the curved portion, which is defined by a border as a line extending in a width direction of the leg portion through a contact point with a road surface in a standing state of a wearer who wears the athletic prosthetic leg, has a higher drainage performance compared with a region other than the region at the side of the curved portion.
    Type: Application
    Filed: April 17, 2019
    Publication date: June 3, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Dyta ITOI, Kohei SAHASHI
  • Patent number: D886715
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: June 9, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Kohei Sahashi
  • Patent number: D926668
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: August 3, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Shintaro Hayashi, Kohei Sahashi
  • Patent number: D926669
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: August 3, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Shungo Fujita, Kohei Sahashi
  • Patent number: D927408
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: August 10, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Shintaro Hayashi, Kohei Sahashi
  • Patent number: D930566
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: September 14, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Kohei Sahashi
  • Patent number: D931189
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: September 21, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Kohei Sahashi, Takayuki Kurata, Naoyuki Sone
  • Patent number: D931190
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: September 21, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Kohei Sahashi, Takayuki Kurata, Naoyuki Sone
  • Patent number: D931197
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: September 21, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Shungo Fujita, Kohei Sahashi
  • Patent number: D956662
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: July 5, 2022
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Kohei Sahashi, Takayuki Kurata, Naoyuki Sone
  • Patent number: D956663
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: July 5, 2022
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Kohei Sahashi, Takayuki Kurata, Naoyuki Sone
  • Patent number: D956664
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: July 5, 2022
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Kohei Sahashi, Takayuki Kurata, Naoyuki Sone
  • Patent number: D957311
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: July 12, 2022
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Mayuko Karasawa, Kohei Sahashi