Patents by Inventor Kohei SAKANISHI

Kohei SAKANISHI 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 antibody-drug conjugate
    Patent number: 11945882
    Abstract: Crystals of the compound represented by formula (1), a method for the production thereof, and a method for producing an antibody-drug conjugate using the crystals.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: April 2, 2024
    Assignee: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Tatsuya Yamaguchi, Takashi Kouko, Shigeru Noguchi, Yohei Yamane, Fumikatsu Kondo, Takahiro Aoki, Tadahiro Takeda, Kohei Sakanishi, Hitoshi Sato, Tsuyoshi Ueda, Shinji Matuura, Kei Kurahashi, Yutaka Kitagawa, Tatsuya Nakamura
  • METHOD FOR PRODUCING ANTIBODY-DRUG CONJUGATE
    Publication number: 20240082418
    Abstract: A method for producing a compound represented by formula (C) wherein R1 represents an amino group protected with a protecting group, the method comprising a step of subjecting a compound represented by formula (B) wherein R1 represents the same meaning as above, to intramolecular cyclization to convert the compound into the compound represented by formula (C).
    Type: Application
    Filed: October 18, 2023
    Publication date: March 14, 2024
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Yoshio NISHI, Kohei SAKANISHI, Shigeru NOGUCHI, Tadahiro TAKEDA
  • NOVEL METHOD FOR PRODUCING ANTIBODY-DRUG CONJUGATE
    Publication number: 20220226497
    Abstract: A method for producing a compound represented by formula (C) wherein R1 represents an amino group protected with a protecting group, the method comprising a step of subjecting a compound represented by formula (B) wherein R1 represents the same meaning as above, to intramolecular cyclization to convert the compound into the compound represented by formula (C).
    Type: Application
    Filed: March 30, 2022
    Publication date: July 21, 2022
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Yoshio NISHI, Kohei SAKANISHI, Shigeru NOGUCHI, Tadahiro TAKEDA
  • Method for producing antibody-drug conjugate
    Patent number: 11318212
    Abstract: A method for producing a compound represented by formula (C) wherein R1 represents an amino group protected with a protecting group, the method comprising a step of subjecting a compound represented by formula (B) wherein R1 represents the same meaning as above, to intramolecular cyclization to convert the compound into the compound represented by formula (C).
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: May 3, 2022
    Assignee: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Yoshio Nishi, Kohei Sakanishi, Shigeru Noguchi, Tadahiro Takeda
  • METHOD FOR PRODUCING ANTIBODY-DRUG CONJUGATE
    Publication number: 20200385422
    Abstract: Crystals of the compound represented by formula (1), a method for the production thereof, and a method for producing an antibody-drug conjugate using the crystals.
    Type: Application
    Filed: August 30, 2018
    Publication date: December 10, 2020
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Tatsuya YAMAGUCHI, Takashi KOUKO, Shigeru NOGUCHI, Yohei YAMANE, Fumikatsu KONDO, Takahiro AOKI, Tadahiro TAKEDA, Kohei SAKANISHI, Hitoshi SATO, Tsuyoshi UEDA, Shinji MATUURA, Kei KURAHASHI, Yutaka KITAGAWA, Tatsuya NAKAMURA
  • NOVEL METHOD FOR PRODUCING ANTIBODY-DRUG CONJUGATE
    Publication number: 20200384121
    Abstract: A method for producing a compound represented by formula (C) wherein R1 represents an amino group protected with a protecting group, the method comprising a step of subjecting a compound represented by formula (B) wherein R1 represents the same meaning as above, to intramolecular cyclization to convert the compound into the compound represented by formula (C).
    Type: Application
    Filed: August 30, 2018
    Publication date: December 10, 2020
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Yoshio NISHI, Kohei SAKANISHI, Shigeru NOGUCHI, Tadahiro TAKEDA