Patents by Inventor Kenichi Namatsu

Kenichi Namatsu 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).

  • POLYMER CONJUGATE BONDED TO TERTIARY AMINE COMPOUND OR IMINE COMPOUND AND PRODUCTION METHOD THEREFOR
    Publication number: 20220257781
    Abstract: Provided is a compound as a compound obtained by conjugating a tertiary amine compound or an imine compound, which is useful as a drug, with a polymer, in which a structure D+ forming a quaternary ammonium salt or an iminium salt from D, a tertiary amine compound or an imine compound and a polymer residue Poly having a carboxy group are bonded to each other via a structure —C(R1)(R2)OC(?O)YANHC(?O)—.
    Type: Application
    Filed: September 5, 2019
    Publication date: August 18, 2022
    Applicant: Seikagaku Corporation
    Inventors: Nobuo Kobayashi, Kenichi Namatsu
  • PRIMARY AMINE COMPOUND OR SECONDARY AMINE COMPOUND-ACIDIC POLYSACCHARIDE CONJUGATE AND PRODUCTION METHOD THEREFOR
    Publication number: 20220040318
    Abstract: Provided is a novel conjugate of a primary or secondary amine compound with an acidic polysaccharide, which is a compound represented by Formula (I) or a pharmaceutically acceptable salt thereof, where in Formula (I), D, R1, R2, A, and Poly are as defined in the specification.
    Type: Application
    Filed: September 27, 2019
    Publication date: February 10, 2022
    Applicant: Seikagaku Corporation
    Inventors: Nobuo Kobayashi, Ryogo Hishiki, Kenichi Namatsu
  • BIOACTIVE CARBOXYLIC ACID TYPE COMPOUND-POLYMER CONJUGATE, AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20210015933
    Abstract: Provided are a novel conjugate of a bioactive carboxylic acid type compound with a polymer having a carboxy group, represented by Formula (I) as defined in the specification, capable of finely controlling a sustained release rate, and capable of sustainably releasing even a drug in which the vicinity of a carbonyl group of the bioactive carboxylic acid type compound is sterically crowded, and a method for manufacturing the same.
    Type: Application
    Filed: March 29, 2019
    Publication date: January 21, 2021
    Applicant: Seikagaku Corporation
    Inventors: Nobuo Kobayashi, Kenta Adachi, Kenichi Namatsu
  • TERTIARY AMINE COMPOUND OR IMINE COMPOUND-POLYMER CONJUGATE AND PRODUCTION METHOD THEREFOR
    Publication number: 20200138964
    Abstract: Provided is a compound obtained by conjugating a tertiary amine compound or imine compound, which is useful as a drug, with a polymer, in which a structure D+ having a quaternary ammonium salt or iminium salt formed from a tertiary amine compound or imine compound D and a polymer residue Poly having a carboxy group are bonded to each other via a structure —C(R1)(R2)OC(O)ANHC(?O)—.
    Type: Application
    Filed: April 25, 2018
    Publication date: May 7, 2020
    Applicant: Seikagaku Corporation
    Inventors: Nobuo Kobayashi, Yosuke Yasuda, Kenichi Namatsu