Patents by Inventor Toshiyuki KAWANABE

Toshiyuki KAWANABE 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).

  • Method for producing cyclobutanediol compound
    Patent number: 11623904
    Abstract: Provided is a process in which a cyclobutanediol compound having a high cis:trans ratio can be stably obtained. The cyclobutanediol compound having a cis:trans ratio of 1.5:1 to 5000:1 is produced by using at least one compound selected from a group consisting of a cyclobutanedione compound, a cyclobutane ketol compound, and a cyclobutanediol compound as a raw material, and performing a catalytic hydrogenation reaction and an isomerization reaction in the cyclobutanediol compound in a solid phase state in the presence of a metal catalyst without adding a solvent.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: April 11, 2023
    Assignee: JNC CORPORATION
    Inventors: Shinichi Furusato, Toshiyuki Kawanabe, Kaori Tsuruoka, Hironao Sajiki, Tsuyoshi Yamada, Kwihwan Park
  • METHOD FOR PRODUCING CYCLOBUTANEDIOL COMPOUND
    Publication number: 20210300847
    Abstract: Provided is a process in which a cyclobutanediol compound having a high cis:trans ratio can be stably obtained. The cyclobutanediol compound having a cis:trans ratio of 1.5:1 to 5000:1 is produced by using at least one compound selected from a group consisting of a cyclobutanedione compound, a cyclobutanketol compound, and a cyclobutanediol compound as a raw material, and performing a catalytic hydrogenation reaction and an isomerization reaction in the cyclobutanediol compound in a solid phase state in the presence of a metal catalyst without adding a solvent.
    Type: Application
    Filed: March 17, 2021
    Publication date: September 30, 2021
    Applicant: JNC CORPORATION
    Inventors: Shinichi Furusato, Toshiyuki KAWANABE, Kaori TSURUOKA, Hironao SAJIKI, Tsuyoshi YAMADA, Kwihwan PARK