Patents by Inventor Kohei YABUUCHI

Kohei YABUUCHI 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).

  • HYALURONIC ACID DERIVATIVE COMPOSITION, PHARMACEUTICAL COMPOSITION AND HYALURONIC ACID DERIVATIVE-DRUG CONJUGATE COMPOSITION
    Publication number: 20230085879
    Abstract: Provided are: a hyaluronic acid derivative composition that comprises (A) a hyaluronic acid derivative having a steryl group introduced therein; and (B) a polar group-containing compound having at least one functional group selected from the group consisting of hydroxy group, carboxy group, amino group, amide group, carbamate group, urea group and thiol group, wherein the steryl group has been introduced at a ratio of 0.1% or more and less than 35% relative to the hyaluronic acid derivative (A); a pharmaceutical composition that contains the hyaluronic acid derivative composition as a carrier; and a hyaluronic acid derivative-drug conjugate composition wherein, in the hyaluronic acid derivative composition, one or more drugs are conjugated to the hyaluronic acid derivative (A).
    Type: Application
    Filed: February 5, 2021
    Publication date: March 23, 2023
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Yoshiyuki NAKAGAWA, Kohei YABUUCHI, Keisuke FUKUMOTO, Toru KATSUMATA, Soyeun YANG
  • HYALURONIC ACID DERIVATIVE, PHARMACEUTICAL COMPOSITION, AND HYALURONIC ACID DERIVATIVE-DRUG COMPLEX
    Publication number: 20230066990
    Abstract: The present invention provides a hyaluronic acid derivative having a steryl group introduced therein, wherein a ratio Mw/Mn of a weight-average molecular weight Mw to a number-average molecular weight Mn of the hyaluronic acid derivative is 1.11 or more and 10.0 or less.
    Type: Application
    Filed: February 4, 2021
    Publication date: March 2, 2023
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Kohei YABUUCHI, Yoshiki MIYAMOTO, Keisuke FUKUMOTO, Toru KATSUMATA, Yoshiyuki NAKAGAWA