Patents by Inventor Daisuke Kanenari

Daisuke Kanenari 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).

  • Thermoplastic elastomer composition, process for producing the same, and pneumatic tire and hose made with the same
    Patent number: 6359071
    Abstract: A thermoplastic elastomer composition dynamically vulcanized to a gelation rate of 50 to 95% which is superior in heat resistance and durability while maintaining flexibility and superior in air permeation preventive property which can be efficiently used as, for example, a pneumatic tire as an air permeation preventive layer. In particular, a thermoplastic elastomer composition having a reduced particle size of the domain rubber is produced by a material having a high rubber ratio by mixing a composition (C) mixed under conditions of a ratio of melt viscosities of the rubber composition (A)/resin (B) of 0.8 to 1.2 and the formula (&phgr;A/&phgr;B)×(&eegr;B/&eegr;A)<1.0 under conditions of a ratio of melt viscosities of the rubber composition (D)/composition (C) of 0.8 to 1.2 and the formula (&phgr;D/&phgr;C)×(&eegr;C/&eegr;D)<1.
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: March 19, 2002
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Jiro Watanabe, Kazuto Yamakawa, Daisuke Kanenari, Noriaki Kuroda, Gou Kawaguchi, Yuichi Hara, Tetsuji Kawazura, Shigeru Yamauchi, Hideo Nemoto
  • Thermoplastic elastomer composition having improved processability and tire using the same
    Publication number: 20010041762
    Abstract: A thermoplastic elastomer composition of a structure of a thermoplastic resin (A) in which a rubber composition (B) is dispersed, where the stress at the time of 2.5% elongation of the stress-strain curve of the thermoplastic elastomer composition is 0.1 to 50 MPa and the ratio of the stress (M200) at −20° C. and 200% elongation and the stress (M100) at −20° C. and 100% elongation is 1.0<M200/M100<2.0, particularly a thermoplastic elastomer composition structured with the polyamide resin of the thermoplastic resin (A) in which the rubber composition (B) is dispersed, includes a polyamide plasticizer (C1) and/or a thermoplastic elastomer (C2), the ratio of composition being (A) 15 to 59% by weight, (B) 40 to 70% by weight (C1+C2), and 1 to 30% by weight and a tire using the same.
    Type: Application
    Filed: March 27, 2001
    Publication date: November 15, 2001
    Inventors: Masahiro Ikawa, Kazuto Yamakawa, Yuiti Hara, Daisuke Kanenari, Katsuhiro Tanaka, Yoshihiro Soeda
  • Thermoplastic elastomer composition and process for producing the same and pneumatic tire and hose using the same
    Publication number: 20010018492
    Abstract: A thermoplastic elastomer composition dynamically vulcanized to a gelation rate of 50 to 95% which is superior in heat resistance and durability while maintaining flexibility and superior in air permeation preventive property which can be efficiently used as, for example, a pneumatic tire as an air permeation preventive layer. In particular, a thermoplastic elastomer composition having a reduced particle size of the domain rubber is produced by a material having a high rubber ratio by mixing a composition (C) mixed under conditions of a ratio of melt viscosities of the rubber composition (A)/resin (B) of 0.8 to 1.2 and the formula (&phgr;A/&phgr;B)×(&eegr;B/&eegr;A)<1.0 under conditions of a ratio of melt viscosities of the rubber composition (D)/composition (C) of 0.8 to 1.2 and the formula (&phgr;D/&phgr;C)×(&eegr;C/&eegr;D)<1.
    Type: Application
    Filed: March 8, 2001
    Publication date: August 30, 2001
    Applicant: YOKOHAMA RUBBER CO., LTD.
    Inventors: Jiro Watanabe, Kazuto Yamakawa, Daisuke Kanenari, Noriaki Kuroda, Gou Kawaguchi, Yuichi Hara, Tetsuji Kawazura, Shigeru Yamauchi, Hideo Nemoto
  • Pneumatic radial tire
    Publication number: 20010010245
    Abstract: A pneumatic tire comprising a rubber member containing a short fiber (A′) formed by the fibrillation of a short fiber (A) whose cross section takes a sea-island structure essentially composed of at least two polymers.
    Type: Application
    Filed: February 1, 2001
    Publication date: August 2, 2001
    Applicant: The Yokohama Rubber Co., LTD.
    Inventors: Daisuke Kanenari, Riichiro Mama, Kazuto Yamakawa, Takeo Masaki, Zenichiro Shida, Junichi Ohtani, Tsuyoshi Kunugi
  • Pneumatic radial tire reinforced with fibrillated sea-island short polymer fibers
    Patent number: 6209603
    Abstract: A pneumatic tire comprising a rubber member containing a short fiber (A′) formed by the fibrillation of a short fiber (A) whose cross section takes a sea-island structure essentially composed of at least two polymers.
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: April 3, 2001
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Daisuke Kanenari, Riichiro Mama, Kazuto Yamakawa, Takeo Masaki