Patents by Inventor Takuya Ogasawara

Takuya Ogasawara 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: 20220290749
    Abstract: A vehicle drive device is provided that can suppress the increase in dimension in the radial direction while ensuring a sufficient speed reduction ratio. Two driving force sources are arranged on a first axis, two output members are arranged on a second axis, two counter gear mechanisms are arranged on a third axis. A planetary gear mechanism is configured to transmit rotation from the two counter gear mechanisms to the output members, and is disposed so as to overlap with both of the two counter gear mechanisms as seen in an axial direction along and axial direction.
    Type: Application
    Filed: August 28, 2020
    Publication date: September 15, 2022
    Applicants: AISIN CORPORATION, MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Toshihisa MIZUTANI, Kenta KATAOKA, Taiki OWARI, Hiroaki OSANAI, Daiki SUYAMA, Hiroshi KATO, Yuki YANAGIHARA, Naoki TAKAHASHI, Kiminobu TERAO, Takuya OGASAWARA, Yosuke MORIMOTO
  • Publication number: 20200307315
    Abstract: Provided is a rubber composition that achieves both wet performance and low loss property while delivering excellent dry handling performance. A rubber composition comprises: a rubber component; and a styrene-alkylene block copolymer, wherein a total styrene content of the styrene-alkylene block copolymer is 30 mass % or more.
    Type: Application
    Filed: June 12, 2020
    Publication date: October 1, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Misa AOKI, Seiichi TAHARA, Takuya OGASAWARA
  • Publication number: 20200032037
    Abstract: Provided is a rubber composition capable of highly achieving all of wet performance, low rolling resistance, and steering stability on a dry road surface of a tire, A rubber composition comprises: a rubber component (A) containing natural rubber (A1) and a modified conjugated diene-based polymer (A2); and a thermoplastic resin (B), wherein a content of the natural rubber (A1) in the rubber component (A) is 30 mass % or more, and the modified conjugated diene-based polymer (A2) has a weight-average molecular weight of 20×104 or more and 300×104 or less, contains 0.25 mass % or more and 30 mass % or less of a modified conjugated diene-based polymer having a molecular weight of 200×104 or more and 500×104 or less with respect to a total amount of the modified conjugated diene-based polymer (A2), and has a contracting factor (g?) of less than 0.64.
    Type: Application
    Filed: April 2, 2018
    Publication date: January 30, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Kosuke TAKANO, Takuya OGASAWARA, Takanori TSUJI
  • Publication number: 20200017662
    Abstract: The present disclosure provides a rubber composition that can improve the steering stability and the wet performance of a tire while reducing the rolling resistance of the tire. The rubber composition includes a rubber component (A) including a natural rubber (A1) and a modified diene rubber (A2) having a glass transition temperature (Tg) of ?50° C. or lower, and a thermoplastic resin (B). The storage modulus of the rubber composition at 30° C. under 1% strain (E?30° C., 1%) is 4.5 MPa or more, and the storage modulus of the rubber composition at 0° C. under 4% strain (E?0° C., 4%) is 16.7 MPa or less.
    Type: Application
    Filed: September 21, 2017
    Publication date: January 16, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Takuya OGASAWARA, Takanori TSUJI
  • Publication number: 20190211191
    Abstract: The present disclosure provides a rubber composition that can improve the steering stability and the wet performance of a tire while reducing the rolling resistance of the tire. The rubber composition includes a rubber component (A) including a natural rubber (A1) and a modified diene rubber (A2) having a glass transition temperature (Tg) of ?50° C. or lower, a thermoplastic resin (B), and a silica (C) such that the specific surface area by cetyltrimethylammonium bromide adsorption (CTAB) (m2/g) and the ink bottle-shaped micropore index (IB) satisfy IB??0.36×CTAB+86.8 (Expression Y). The amount of the thermoplastic resin (B) is 10 to 50 parts by mass per 100 parts by mass of the rubber component (A).
    Type: Application
    Filed: September 21, 2017
    Publication date: July 11, 2019
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Takuya OGASAWARA, Takanori TSUJI
  • Patent number: 9815330
    Abstract: The laminate according to the present invention includes a thermoplastic resin film-containing layer and a rubber layer, in which the rubber layer contains a modified diene polymer, and the rubber layer has a dynamic storage modulus E? at ?20° C. of 1.0×105 to 1.0×108 Pa. This laminate can improve the resistance to the fractures and the cracks of the inner liner.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: November 14, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Takuya Ogasawara, Hideyuki Chiashi, Hideki Kitano
  • Patent number: 9718311
    Abstract: A pneumatic tire includes: an inner liner having a thermoplastic resin film, a carcass, and an adhesive layer disposed between the inner liner and the carcass, in which the dynamic storage modulus E's at ?20° C. of the thermoplastic resin film, the adhesive layer, and the carcass are defined as E1?, E2?, and E3?, respectively, and the relationship among E1?, E2?, and E3? satisfies E1?>E2?>E3?. This pneumatic tire has excellent anti-crack property in a low-temperature environment of the inner liner.
    Type: Grant
    Filed: May 28, 2012
    Date of Patent: August 1, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Takuya Ogasawara, Hideyuki Chiashi, Hideki Kitano
  • Patent number: 9393838
    Abstract: Provided are a pressure-sensitive adhesive composition comprising, as a rubber component, at least two modified rubbers modified with a polar functional group and having different modification rates with each other, a laminate body comprising (A) a resin film layer and (B) a rubber elastic body layer wherein they are adhered via (C) the said pressure-sensitive adhesive composition, and a pneumatic tire having the said laminate body as an inner liner layer; and thus, provided are the pressure-sensitive adhesive composition that can firmly bond between the resin film layer and the rubber elastic body layer while the laminate body obtained therefrom does not generate cracks at low temperature, the laminate body using the said pressure-sensitive adhesive composition, and the pneumatic tire.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: July 19, 2016
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Takuya Ogasawara, Ryuji Nakagawa, Kotaro Hayakawa, Hideyuki Chiashi
  • Patent number: 9029462
    Abstract: The present invention provides an adhesive composition that may improve both adhesiveness to a film layer and adhesiveness to a rubber layer, and an adhesion method using the same, as well as a laminate and a tire. The adhesive composition according to the present invention includes a rubber component, at least 80 mass % of which rubber component is an epoxidized natural rubber.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: May 12, 2015
    Assignee: Bridgestone Corporation
    Inventors: Takuya Ogasawara, Ryuji Nakagawa, Kotaro Hayakawa, Hideyuki Chiashi
  • Publication number: 20140124115
    Abstract: A pneumatic tire includes: an inner liner having a thermoplastic resin film, a carcass, and an adhesive layer disposed between the inner liner and the carcass, in which the dynamic storage modulus E's at ?20° C. of the thermoplastic resin film, the adhesive layer, and the carcass are defined as E1?, E2?, and E3?, respectively, and the relationship among E1?, E2?, and E3? satisfies E1?>E2?>E3?. This pneumatic tire has excellent anti-crack property in a low-temperature environment of the inner liner.
    Type: Application
    Filed: May 28, 2012
    Publication date: May 8, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Takuya Ogasawara, Hideyuki Chiashi, Hideki Kitano
  • Publication number: 20140110032
    Abstract: The laminate according to the present invention includes a thermoplastic resin film-containing layer and a rubber layer, in which the rubber layer contains a modified diene polymer, and the rubber layer has a dynamic storage modulus E? at ?20° C. of 1.0×105 to 1.0×108 Pa. This laminate can improve the resistance to the fractures and the cracks of the inner liner.
    Type: Application
    Filed: May 30, 2012
    Publication date: April 24, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Takuya OGASAWARA, Hideyuki CHIASHI, Hideki KITANO
  • Publication number: 20140087110
    Abstract: Provided are a pressure-sensitive adhesive composition comprising, as a rubber component, at least two modified rubbers modified with a polar functional group and having different modification rates with each other, a laminate body comprising (A) a resin film layer and (B) a rubber elastic body layer wherein they are adhered via (C) the said pressure-sensitive adhesive composition, and a pneumatic tire having the said laminate body as an inner liner layer; and thus, provided are the pressure-sensitive adhesive composition that can firmly bond between the resin film layer and the rubber elastic body layer while the laminate body obtained therefrom does not generate cracks at low temperature, the laminate body using the said pressure-sensitive adhesive composition, and the pneumatic tire.
    Type: Application
    Filed: April 2, 2012
    Publication date: March 27, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Takuya Ogasawara, Ryuji Nakagawa, Kotaro Hayakawa, Hideyuki Chiashi
  • Publication number: 20140048194
    Abstract: The present invention provides an adhesive composition that may improve both adhesiveness to a film layer and adhesiveness to a rubber layer, and an adhesion method using the same, as well as a laminate and a tire. The adhesive composition according to the present invention includes a rubber component, at least 80 mass % of which rubber component is an epoxidized natural rubber.
    Type: Application
    Filed: April 12, 2012
    Publication date: February 20, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Takuya Ogasawara, Ryuji Nakagawa, Kotaro Hayakawa, Hideyuki Chiashi
  • Publication number: 20140030537
    Abstract: The present invention provides an adhesive composition that may improve both adhesiveness to a film layer and adhesiveness to a rubber layer, and an adhesion method using the same, as well as a laminate and a tire. The adhesive composition according to the present invention includes: a rubber component containing a diene-based elastomer; and a compound having a polar functional group in its molecule.
    Type: Application
    Filed: April 12, 2012
    Publication date: January 30, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Takuya Ogasawara, Ryuji Nakagawa, Kotaro Hayakawa, Hideyuki Chiashi