Patents by Inventor Katsuma Matsui

Katsuma Matsui 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).

  • NOVEL GUANIDINE DERIVATIVE AND METHOD FOR PRODUCING SAME
    Publication number: 20240010627
    Abstract: [Problem] To provide a guanidine derivative (in particular, an amino acid compound having a 4-guanidino group) which has a low production cost and is less likely to cause the problem of waste liquor, a method for producing the same and an intermediate to be used in the production of the same. [Solution] A compound represented by formula (I), a tautomer thereof, an enantiomer thereof, a pharmaceutically acceptable salt thereof or a pharmaceutically acceptable solvate thereof; a method for producing a compound represented by formula (I), a tautomer thereof, an enantiomer thereof, a pharmaceutically acceptable salt thereof or a pharmaceutically acceptable solvate thereof, said method comprising a mixing step for mixing a compound represented by formula (II) with a compound represented by formula (III); and a compound represented by formula (IV) or formula (V).
    Type: Application
    Filed: January 7, 2022
    Publication date: January 11, 2024
    Applicant: PeptiDream Inc.
    Inventors: Takeru EHARA, Masatoshi TAKUWA, Haruaki KURASAKI, Kouki MORIMOTO, Katsuma MATSUI, Ayumu MATSUDA, Naoki OKADA, Masatoshi MATSUMOTO
  • NOVEL AMINO ACID DERIVATIVES
    Publication number: 20230312479
    Abstract: A novel amino acid derivative is provided, wherein the amino acid derivative is expected to improve binding affinity of polypeptides comprising the derivative therein.
    Type: Application
    Filed: March 28, 2023
    Publication date: October 5, 2023
    Inventors: Haruaki Kurasaki, Masatoshi Matsumoto, Ayumu Matsuda, Yutaka Kobayashi, Masahiko Kinebuchi, Tomoko Ashizawa, Katsuma Matsui, Motoki Murai, Masami Yamada
  • NOVEL AMINO ACID DERIVATIVES
    Publication number: 20230257343
    Abstract: A novel amino acid derivative is provided, wherein the amino acid derivative is expected to improve solubility of polypeptides comprising the derivative therein.
    Type: Application
    Filed: February 14, 2023
    Publication date: August 17, 2023
    Inventors: Naoki OKADA, Kyosuke UEDA, Masatoshi TAKUWA, Shunichi NAKANO, Kotaro TOKUMOTO, Tomoko ASHIZAWA, Shuhei YAMAKOSHI, Yutaka KOBAYASHI, Katsuma MATSUI, Ayumu MATSUDA, Masatoshi MATSUMOTO, Keiichi MASUYA, Atsushi YOSHIZAWA, Masahiko KINEBUCHI, Takeru EHARA, Masami YAMADA, Kouki MORIMOTO, Yoshihide MIZUKOSHI, Haruaki KURASAKI, Motoki MURAI, Kentarou FUKUMOTO, Douglas Robert CARY
  • GhR-BINDING PEPTIDE AND COMPOSITION COMPRISING SAME
    Publication number: 20230012823
    Abstract: The present technology generally relates to peptides that bind to the growth hormone receptor (GhR), to peptides that bind to the GhR and have antagonistic activity, and to compositions comprising such peptides.
    Type: Application
    Filed: June 17, 2022
    Publication date: January 19, 2023
    Inventors: Tatsuya TOMIYAMA, Haruaki KURASAKI, Katsuma MATSUI, Yoshiaki MASUDA, Masataka UMITSU
  • Carbon nanoring, method for producing same, compound suitable as starting material for producing the carbon nanoring, and method for producing the compound
    Patent number: 9029551
    Abstract: This invention provides: a compound for accurately forming a carbon nanoring that contains a specific number of organic rings and has a definite diameter; a method for producing the compound; a method for efficiently producing a carbon nanoring; and a cycloparaphenylene obtained by the production method. The carbon nanoring of the present invention is a compound obtained by bonding a specific number of organic ring groups. The method for producing a carbon nanoring of the present invention comprises a modification step wherein a halogen atom in a U-shaped compound is modified into a boron compound, and a coupling step wherein the U-shaped compound is subjected to a coupling reaction. The U-shaped compound is a novel compound that has cyclohexane rings, benzene rings, and specific organic ring groups.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: May 12, 2015
    Assignee: National University Corporation Nagoya University
    Inventors: Kenichiro Itami, Yasutomo Segawa, Haruka Omachi, Sanae Matsuura, Katsuma Matsui
  • CARBON NANORING, METHOD FOR PRODUCING SAME, COMPOUND SUITABLE AS STARTING MATERIAL FOR PRODUCING THE CARBON NANORING, AND METHOD FOR PRODUCING THE COMPOUND
    Publication number: 20130041155
    Abstract: This invention provides: a compound for accurately forming a carbon nanoring that contains a specific number of organic rings and has a definite diameter; a method for producing the compound; a method for efficiently producing a carbon nanoring; and a cycloparaphenylene obtained by the production method. The carbon nanoring of the present invention is a compound obtained by bonding a specific number of organic ring groups. The method for producing a carbon nanoring of the present invention comprises a modification step wherein a halogen atom in a U-shaped compound is modified into a boron compound, and a coupling step wherein the U-shaped compound is subjected to a coupling reaction. The U-shaped compound is a novel compound that has cyclohexane rings, benzene rings, and specific organic ring groups.
    Type: Application
    Filed: February 10, 2011
    Publication date: February 14, 2013
    Applicant: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Kenichiro Itami, Yasutomo Segawa, Haruka Omachi, Sanae Matsuura, Katsuma Matsui