Patents by Inventor Katsuhiko YAMASHITA

Katsuhiko YAMASHITA 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 silica carrier, and silica carrier
    Patent number: 11890592
    Abstract: A method for producing the silica carrier which includes kneading fumed silica obtained by a combustion method, silica gel obtained by a gel method, and colloidal silica obtained by a sol-gel method or a water glass method, molding the resulting kneaded product, and calcining the resulting molded body. The silica carrier has, in the measurement of pore size distribution, mesopores with a pore size of 2 to 50 nm and macropores with a pore size of more than 50 nm and 1,000 nm or less.
    Type: Grant
    Filed: September 3, 2018
    Date of Patent: February 6, 2024
    Assignee: Resonac Corporation
    Inventors: Wataru Oguchi, Katsuhiko Yamashita, Toshihiro Kimura, Daiki Shimono
  • Production method of aliphatic carboxylic acid ester
    Patent number: 10919836
    Abstract: In a method for producing an aliphatic carboxylic acid ester by reacting an aliphatic carboxylic acid having from 1 to 5 carbon atoms and an olefin having from 2 to 4 carbon atoms in a gas phase by use of a solid acid catalyst, a solid acid catalyst in which a heteropolyacid or a salt thereof is supported on a silica carrier obtainable by kneading fumed silica obtained by a combustion method, silica gel obtained by a gel method, and colloidal silica obtained by a sol-gel method or a water glass method, molding the resulting kneaded product, and calcining the resulting molded body, is used.
    Type: Grant
    Filed: September 3, 2018
    Date of Patent: February 16, 2021
    Assignee: SHOWA DENKO K.K.
    Inventors: Shintaro Itagaki, Katsuhiko Yamashita, Taku Takahashi
  • PRODUCTION METHOD OF ALIPHATIC CARBOXYLIC ACID ESTER
    Publication number: 20200239399
    Abstract: In a method for producing an aliphatic carboxylic acid ester by reacting an aliphatic carboxylic acid having from 1 to 5 carbon atoms and an olefin having from 2 to 4 carbon atoms in a gas phase by use of a solid acid catalyst, a solid acid catalyst in which a heteropolyacid or a salt thereof is supported on a silica carrier obtainable by kneading fumed silica obtained by a combustion method, silica gel obtained by a gel method, and colloidal silica obtained by a sol-gel method or a water glass method, molding the resulting kneaded product, and calcining the resulting molded body, is used.
    Type: Application
    Filed: September 3, 2018
    Publication date: July 30, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Shintaro ITAGAKI, Katsuhiko YAMASHITA, Taku TAKAHASHI
  • METHOD FOR PRODUCING SILICA CARRIER, AND SILICA CARRIER
    Publication number: 20200238255
    Abstract: A method for producing the silica carrier which includes kneading fumed silica obtained by a combustion method, silica gel obtained by a gel method, and colloidal silica obtained by a sol-gel method or a water glass method, molding the resulting kneaded product, and calcining the resulting molded body. The silica carrier has, in the measurement of pore size distribution, mesopores with a pore size of 2 to 50 nm and macropores with a pore size of more than 50 nm and 1,000 nm or less.
    Type: Application
    Filed: September 3, 2018
    Publication date: July 30, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Wataru OGUCHI, Katsuhiko YAMASHITA, Toshihiro KIMURA, Daiki SHIMONO