Patents by Inventor Shunho ISHIKAWA

Shunho ISHIKAWA 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).

  • Publication number: 20210316997
    Abstract: An object of the present disclosure is to provide a method for producing a core-shell porous silica particle with an increased thickness of the shell. The object is met by a method for producing a core-shell porous silica particle, the method including the following steps: (a) preparing; (b) forming a shell precursor; (c) forming a shell; (d) preparing; (e) forming a shell precursor; and (f) forming a shell; wherein the steps (d) through (f) are further repeated one to three times, in which case the step of forming a shell described in step (d) refers to step (f).
    Type: Application
    Filed: August 13, 2019
    Publication date: October 14, 2021
    Applicants: TOHOKU UNIVERSITY, DAICEL CORPORATION
    Inventors: Daisuke FUKUDA, Daisuke NAGAO, Haruyuki ISHII, Shunho ISHIKAWA
  • Publication number: 20210260563
    Abstract: Provided is a production method for core-shell porous silica particles, the production method including: a preparation step of preparing an aqueous solution comprising non-porous silica particles, a cationic surfactant, a basic catalyst, an electrolyte, and an alcohol; a shell precursor formation step of adding a silica source to the aqueous solution to form a shell precursor on a surface of the non-porous silica particles; and a shell formation step of removing the cationic surfactant from the shell precursor to form a porous shell.
    Type: Application
    Filed: June 17, 2019
    Publication date: August 26, 2021
    Applicants: TOHOKU UNIVERSITY, DAICEL CORPORATION
    Inventors: Daisuke NAGAO, Haruyuki ISHII, Shunho ISHIKAWA