Patents by Inventor Yuuki Tsujimoto

Yuuki Tsujimoto 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).

  • Catalyst, Method for Producing Catalyst, and Method for Producing Unsaturated Carboxylic Acid and/or Unsaturated Carboxylic Acid Ester
    Publication number: 20240116031
    Abstract: An object of the present invention is to provide a catalyst that enables production of an unsaturated carboxylic acid and/or unsaturated carboxylic acid ester represented by methyl methacrylate with high selectivity. The object is achieved by a catalyst including: one or more elements selected from boron, magnesium, zirconium, hafnium, and titanium; one or more elements selected from alkali metal elements; and silica; the catalyst having a peak height ratio I2/I1 of 0 to 1.2, wherein I1 represents the peak height at 417±10 cm?1, and I2 represents the peak height at 1050±10 cm?1, as obtained by Raman spectroscopy.
    Type: Application
    Filed: November 30, 2023
    Publication date: April 11, 2024
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Akio Hayashi, Yuuki Tsujimoto, Toshio Hasegawa, Kazufumi Nishida, Masaya Fujisue, Wataru Ninomiya