Patents by Inventor Masahiro Naruse

Masahiro Naruse 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: 20230079114
    Abstract: Provided is a pneumatic tire. A transponder is embedded in an outer side in a tire width direction of a carcass layer, the transponder is covered by a covering layer, and a storage modulus E?c at 20° C. of the covering layer and a storage modulus E?out at 20° C. of a rubber member having the largest storage modulus at 20° C. of rubber members located on an outer side in the tire width direction of the transponder satisfy the relationship 0.1?E?c/E?out?1.5. Further, the storage modulus E?c at 20° C. of the covering layer and a storage modulus E?in at 20° C. of a rubber member having the largest storage modulus at 20° C. of rubber members located on an inner side in the tire width direction of the transponder satisfy the relationship 0.03?E?c/E?in?1.50.
    Type: Application
    Filed: February 12, 2021
    Publication date: March 16, 2023
    Inventor: Masahiro NARUSE
  • Publication number: 20230080547
    Abstract: Provided is a pneumatic tire that can provide improved transponder durability while ensuring tire durability. The pneumatic tire includes: a tread portion (1) extending in a tire circumferential direction and having an annular shape; a pair of sidewall portions (2) disposed on both sides of the tread portion (1); and a pair of bead portions (3) disposed on an inner side in a tire radial direction of the sidewall portions (2). The tire is embedded with a transponder (20) covered with a covering layer (23). A glass transition temperature (Tg) of the covering layer (23) is in a range of from ?70° C. to ?45° C.
    Type: Application
    Filed: February 12, 2021
    Publication date: March 16, 2023
    Inventor: Masahiro NARUSE
  • Publication number: 20230083074
    Abstract: Provided is a pneumatic tire. A transponder is embedded on an outer side in a tire width direction of a carcass layer, and the tan ?out (?20° C.) at ?20° C. of a rubber member having the largest storage modulus at 20° C. of rubber members located on the outer side in the tire width direction of the transponder is in the range of from 0.1 to 0.7. Further, the transponder is embedded on the outer side in the tire width direction of the carcass layer, and the tan ?in (?20° C.) at ?20° C. of a rubber member having the largest storage modulus at 20° C. of rubber members located on an inner side in the tire width direction of the transponder is in the range of from 0.1 to 0.7.
    Type: Application
    Filed: February 12, 2021
    Publication date: March 16, 2023
    Inventor: Masahiro NARUSE
  • Publication number: 20230078031
    Abstract: A pneumatic tire is provided. A transponder is embedded in an outer side of a carcass layer in a tire width direction, a rubber member having a largest storage modulus at 20° C. of rubber members located on an outer side of the transponder in the tire width direction has a storage modulus at 0° C. E?out(0° C.) and a storage modulus at ?20° C. E?out(?20° C.) that satisfy a relationship 0.50?E?out(0° C.)/E?out(?20° C.)?0.95, and a rubber member having a largest 20° C. storage modulus of rubber members located on an inner side of the transponder in the tire width direction has a storage modulus at 0° C. E?in(0° C.) and a storage modulus at ?20° C. E?in(?20° C.) that satisfy a relationship 0.50?E?in(0° C.)/E?in(?20° C.)?0.95.
    Type: Application
    Filed: February 12, 2021
    Publication date: March 16, 2023
    Inventor: Masahiro NARUSE
  • Publication number: 20230081018
    Abstract: A wear state detection device includes an element configured to generate voltage based on deformation of a tread portion during tire rotation, a voltage detection unit configured to detect the voltage generated by the element, a speed detection unit configured to detect vehicle speed or tire rotation speed, a storage area configured to store waveform data over time of the voltage detected by the voltage detection unit together with the vehicle speed or the tire rotation speed detected by the speed detection unit, a calculation unit configured to calculate frequency of exceedance of a predetermined threshold value based on the waveform data in a predetermined speed range and a predetermined time period stored in the storage area, and a determination unit configured to determine a progress condition of wear of the tread portion based on the frequency of exceedance of the predetermined threshold value calculated by the calculation unit.
    Type: Application
    Filed: January 15, 2021
    Publication date: March 16, 2023
    Inventors: Masahiro NARUSE, Jun MATSUDA, Heishiro FUDO, Eiji SHINOHARA, Shinya ICHISE, Hiroyuki TOBARI, Yuki ONO
  • Patent number: 11602909
    Abstract: An object of the present invention is to provide a tire sealant and a tire repair kit that exhibit excellent injectability. Provided is a tire sealant including a natural rubber latex, a synthetic resin emulsion, an anti-freezing agent, a surfactant, and a chelating agent, wherein the content of the chelating agent is 0.1 mass % or greater.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: March 14, 2023
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Takahiro Okamatsu, Masahiro Naruse
  • Patent number: 11548249
    Abstract: A pneumatic tire that is vulcanized using a bladder provided with a coating layer comprising a release agent, the noise absorber being fixed to the inner surface of the tread portion along the tire circumferential direction via the adhesive layer, and the amount of silicon in the release agent detected by X-ray fluorescence analysis is 0.1 wt. % to 10.0 wt. % at least in the fixation region for the noise absorber.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: January 10, 2023
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Masahiro Naruse, Takashi Hoshiba
  • Publication number: 20230001750
    Abstract: A pneumatic tire is provided that enables communication performance and scratch resistance of a transponder to be improved, A transponder (20) that extends along a tire circumferential direction is embedded between a carcass layer (4) and an innerliner layer, and the transponder (20) is disposed between a position (P1) located on an outer side of and 15 mm away from an upper end (5e) of a bead core (5) in a tire radial direction and a position (P2) located on an inner side of and 5 mm away from an end (7e) of a belt layer (7)in the tire radial direction.
    Type: Application
    Filed: November 25, 2020
    Publication date: January 5, 2023
    Inventors: Yuki NAGAHASHI, Masahiro NARUSE
  • Patent number: 11541699
    Abstract: A tire noise reduction device includes a sound absorbing member made of a porous material; and a band member disposed between the sound absorbing member and the tire inner surface and provided for attaching the sound absorbing member to a tire inner surface, the band member including chamfered portions on both surface sides at both ends in a width direction of the band member.
    Type: Grant
    Filed: June 14, 2022
    Date of Patent: January 3, 2023
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Masahiro Naruse
  • Publication number: 20220410640
    Abstract: In a pneumatic tire in which a carcass layer is turned up from a tire inner side to a tire outer side around a bead core of each bead portion, a transponder is embedded between the carcass layer and a rubber layer disposed in a sidewall portion on an outer side of the carcass layer, the transponder extending along a tire circumferential direction in contact with the rubber layer, and the transponder is disposed 10 mm or more away from an end of a turned up portion of the carcass layer in a tire radial direction.
    Type: Application
    Filed: November 25, 2020
    Publication date: December 29, 2022
    Inventors: Yuki NAGAHASHI, Masahiro NARUSE
  • Patent number: 11534944
    Abstract: A pneumatic tire is vulcanized using a bladder provided with a coating layer formed of a release agent, and includes a sealant layer disposed on an inner surface of a tread portion in a tire circumferential direction, the release agent having a thickness of from 0.1 ?m to 100 ?m in at least a placement region of the sealant layer, detected using an electron microscope.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: December 27, 2022
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Takashi Hoshiba, Masahiro Naruse
  • Publication number: 20220402311
    Abstract: In a pneumatic tire in which a carcass layer is turned up from a tire inner side to a tire outer side around a bead core, an end of a turned up portion of the carcass layer is disposed between a body portion of the carcass layer and a belt layer, a transponder that extends along time circumferential direction is embedded between the turned up portion of the carcass layer and a rubber layer disposed in a sidewall portion on an outer side of the carcass layer, and the transponder is disposed between a position (P1) located on an outer side of and 15 mm away from an upper end of the bead core in a tire radial direction and a position (P2) located on an inner side of and 5 mm away from an end of the belt layer in the tire radial direetion
    Type: Application
    Filed: November 25, 2020
    Publication date: December 22, 2022
    Inventors: Masahiro NARUSE, Yuki NAGAHASHI
  • Publication number: 20220396094
    Abstract: A pneumatic tire includes a transponder extending along a circumferential direction embedded between a position (P1) located on an outer side of and 15 mm away from an upper end of a bead core in a radial direction and a position (P2) located on an inner side of and 5 mm away from an end of a belt layer in the radial direction, and a tire inner surface in which a release agent layer made of a release agent is formed has a surface electric resistivity of 109 ?·cm to 1015 ?·cm. The transponder extending along the circumferential direction is embedded between the position (P1) and the position (P2), and the amount of silicon of the release agent at least in the tire inner surface corresponding to an embedment section for the transponder is 10.0 wt % or less or a thickness of the release agent is 100 ?m or less.
    Type: Application
    Filed: November 25, 2020
    Publication date: December 15, 2022
    Inventors: Masahiro NARUSE, Yuki NAGAHASHI
  • Publication number: 20220332019
    Abstract: A pneumatic tire is vulcanized by using a bladder provided with a coating layer formed by a release agent, and the release agent has a thickness, detected by an electron microscope, of 0.1 ?m to 100 ?m on an inner surface of a tread portion 1.
    Type: Application
    Filed: July 1, 2022
    Publication date: October 20, 2022
    Inventors: Takashi Hoshiba, Masahiro Naruse
  • Publication number: 20220305851
    Abstract: A tire noise reduction device includes a sound absorbing member made of a porous material; and a band member disposed between the sound absorbing member and the tire inner surface and provided for attaching the sound absorbing member to a tire inner surface, the band member including chamfered portions on both surface sides at both ends in a width direction of the band member.
    Type: Application
    Filed: June 14, 2022
    Publication date: September 29, 2022
    Inventor: Masahiro Naruse
  • Patent number: 11370254
    Abstract: A tire noise reduction device includes a sound absorbing member made of a porous material; and a band member disposed between the sound absorbing member and the tire inner surface and provided for attaching the sound absorbing member to a tire inner surface, the band member including chamfered portions on both surface sides at both ends in a width direction of the band member.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: June 28, 2022
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Masahiro Naruse
  • Patent number: 11331966
    Abstract: A pneumatic tire includes: an annular-shaped tread portion extending in a tire circumferential direction; a pair of sidewall portions disposed on both sides of the tread portion; and a pair of bead portions disposed on an inner side in a tire radial direction of the sidewall portions; wherein a band-like sound absorbing member is adhered on an inner surface of the tread portion in the tire circumferential direction; and a plurality of cuts with an angle ? with regard to the tire circumferential direction within a range of 40°???90° are formed on both end portions in a lateral direction of the band-like sound absorbing member, and the cuts are connected only to one end portion in the lateral direction of the band-like sound absorbing member.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: May 17, 2022
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Takashi Hoshiba, Tatsuro Shinzawa, Masahiro Naruse
  • Patent number: 11331965
    Abstract: A pneumatic tire is provided, including: an annular-shaped tread portion extending in a tire circumferential direction; a pair of sidewall portions disposed on both sides of the tread portion; and a pair of bead portions disposed on an inner side in a tire radial direction of the sidewall portions; wherein a band-like sound absorbing member is adhered on an inner surface of the tread portion in the tire circumferential direction; and the band-like sound absorbing member has a plurality of cuts extending in two mutually intersecting directions, and of the cuts, a cut extending in one direction is a cut extending parallel with regard to a tire lateral direction or tire circumferential direction.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: May 17, 2022
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Masahiro Naruse, Tatsuro Shinzawa, Takashi Hoshiba
  • Publication number: 20210370728
    Abstract: A pneumatic tire includes, on a tire inner surface, at least one housing body made of rubber and configured to accommodate a sensor unit including a sensor for acquiring tire information. The housing body includes an opening portion through which the sensor unit is inserted, and is vulcanization-bonded to the tire inner surface.
    Type: Application
    Filed: November 12, 2019
    Publication date: December 2, 2021
    Inventors: Masahiro NARUSE, Jun MATSUDA, Takashi HOSHIBA
  • Publication number: 20210309054
    Abstract: Provided are a pneumatic tire and a method for manufacturing the same. At least one sensor unit including a sensor that acquires tire information is fixed to a tire inner surface via an adhesive layer, and a thickness of a release agent detected by an electron microscope at least in a fixing region for the sensor unit is from 0.1 ?m to 100 ?m.
    Type: Application
    Filed: July 17, 2019
    Publication date: October 7, 2021
    Inventors: Takashi Hoshiba, Kazuya Ishiguro, Masahiro Naruse