Patents by Inventor Natsuyo KAMIMOTO

Natsuyo KAMIMOTO 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).

  • VULCANIZED RUBBER COMPOSITION AND TIRE
    Publication number: 20230365790
    Abstract: A vulcanized rubber composition according to one aspect of the present invention comprises a rubber component containing a diene-based rubber and a filler containing silica, and a total of an amount of monosulfide crosslinks and an amount of carbon-carbon crosslinks is 30% to 55% based on an amount of total crosslinks of the vulcanized rubber composition.
    Type: Application
    Filed: September 24, 2021
    Publication date: November 16, 2023
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Natsuyo KAMIMOTO, Wakaba URANO
  • Trisulfide compound
    Patent number: 11760864
    Abstract: The present invention provides a compound represented by the formula (I), which compound is useful for improving the abrasion resistance of a vulcanized rubber composition (the symbols in the following formula are as defined in the description).
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: September 19, 2023
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Natsuyo Kamimoto, Takeshi Hara
  • Rubber composition
    Patent number: 11692088
    Abstract: The present invention provides a rubber composition obtained by kneading a rubber component, a vulcanization accelerator, silica, and a compound represented by the following formula (I): wherein the groups are as defined in the DESCRIPTION.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: July 4, 2023
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kazumasa Matsuo, Natsuyo Kamimoto, Tatsuhiko Adachi, Toshihiro Nobuoka, Takeshi Hara
  • SULFANYL SULFONIC ACID COMPOUND, VISCOELASTIC MODIFIER, RUBBER COMPOSITION, AND VULCANIZED RUBBER PRODUCTION METHOD
    Publication number: 20230144404
    Abstract: Disclosed is a sulfanyl sulfonic acid compound represented by the following formula (1) or a metal salt thereof. In the formula, m represents an integer of 2 to 7, n represents an integer of 3 to 10, and R1 and R2 each independently represent a hydrogen atom or an alkyl group.
    Type: Application
    Filed: February 26, 2021
    Publication date: May 11, 2023
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Natsuyo KAMIMOTO, Takeshi HARA
  • TRISULFIDE COMPOUND
    Publication number: 20220213295
    Abstract: The present invention provides a compound represented by the formula (I), which compound is useful for improving the abrasion resistance of a vulcanized rubber composition (the symbols in the following formula are as defined in the description).
    Type: Application
    Filed: June 4, 2020
    Publication date: July 7, 2022
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Natsuyo KAMIMOTO, Takeshi HARA
  • VULCANIZED RUBBER COMPOSITION
    Publication number: 20220119623
    Abstract: The present invention provides a vulcanized rubber composition which comprises a compound represented by formula (I) and a vulcanized rubber and in which the content of the compound represented by formula (I) is 0.00005 to 5% by weight with respect to the entire vulcanized rubber composition (the groups in formula (I) are as defined in the description).
    Type: Application
    Filed: February 21, 2020
    Publication date: April 21, 2022
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Natsuyo KAMIMOTO, Takeshi HARA, Shiki NOJIMA
  • RUBBER COMPOSITION
    Publication number: 20200207969
    Abstract: The present invention provides a rubber composition obtained by kneading a rubber component, a vulcanization accelerator, silica, and a compound represented by the following formula (I): m wherein the groups are as defined in the DESCRIPTION.
    Type: Application
    Filed: September 7, 2018
    Publication date: July 2, 2020
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kazumasa MATSUO, Natsuyo KAMIMOTO, Tatsuhiko ADACHI, Toshihiro NOBUOKA, Takeshi HARA