Patents by Inventor Toshihiro NOBUOKA

Toshihiro NOBUOKA 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).

  • 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
  • PHLOROGLUCINOLIC RESINS, METHODS OF MAKING, AND USES IN RUBBER COMPOSITIONS
    Publication number: 20230064028
    Abstract: A solid phloroglucinolic resin comprises reacting a phloroglucinolic compound and a ketone in the presence of an acid catalyst. The solid phloroglucinolic resin formed includes multiple phloroglucinolic units defined by formula (I) wherein at least one of R1, R2, and R3 combines with a second phloroglucinolic unit to form a di-substituted methylene bridge, wherein the second one of R1, R2, and R3 is a hydrogen atom or combines with a third phloroglucinolic unit to form another di-substituted methylene bridge, and wherein the third one of R1, R2 and R3 is a hydrogen atom.
    Type: Application
    Filed: January 6, 2021
    Publication date: March 2, 2023
    Inventors: Tamon ITAHASHI, Toshihiro NOBUOKA, Michael C. WALKUP
  • 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