Patents by Inventor Toshio Yoshizawa

Toshio Yoshizawa 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).

  • Combination therapy of an anti CD20 antibody with a BTK inhibitor
    Patent number: 12186392
    Abstract: The present invention is directed to the combination therapy of an anti-CD20 antibody with a BTK inhibitor for the treatment of cancer, especially to the combination therapy of CD20 expressing cancers with a type I anti-CD20 antibody or an afucosylated humanized B-Ly1 antibody and a BTK inhibitor.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: January 7, 2025
    Assignees: Ono Pharmaceutical Co., Ltd., Hoffmann-La Roche Inc.
    Inventors: Christian Klein, Toshio Yoshizawa, Tomoko Yasuhiro
  • PURINONE DERIVATIVE HYDROCHLORIDE
    Publication number: 20240317751
    Abstract: The purinone derivative 6-amino-9-[(3R)-1-(2-butynoyl)-3-pyrrolidinyl]-7-(4-phenoxyphenyl)-7,9-dihydro-8H-purin-8-one hydrochloride has Btk-selective inhibitory activity and, in addition to having excellent metabolic stability, it is a compound that exhibits a high level of solubility and absorption with respect to the free base and can be crystallized, hence it can serve as a therapeutic agent for diseases involving B cells and mast cells.
    Type: Application
    Filed: December 26, 2023
    Publication date: September 26, 2024
    Applicant: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Shingo YAMAMOTO, Toshio YOSHIZAWA
  • PURINONE DERIVATIVE
    Publication number: 20240083899
    Abstract: Compounds represented by general formula (I) (all of the symbols in the formula conform to the definitions in the Description) are compounds that, in addition to having a Btk-selective inhibitory activity, exhibit an excellent metabolic stability and can avoid hepatotoxicity or the like, and as a consequence can provide safe therapeutic agents for diseases in which B cells or mast cells participate.
    Type: Application
    Filed: July 3, 2023
    Publication date: March 14, 2024
    Applicant: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Shingo YAMAMOTO, Toshio YOSHIZAWA
  • Purinone derivative hydrochloride
    Patent number: 11897885
    Abstract: The purinone derivative 6-amino-9-[(3R)-1-(2-butynoyl)-3-pyrrolidinyl]-7-(4-phenoxyphenyl)-7,9-dihydro-8H-purin-8-one hydrochloride has Btk-selective inhibitory activity and, in addition to having excellent metabolic stability, it is a compound that exhibits a high level of solubility and absorption with respect to the free base and can be crystallized, hence it can serve as a therapeutic agent for diseases involving B cells and mast cells.
    Type: Grant
    Filed: February 24, 2022
    Date of Patent: February 13, 2024
    Assignee: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Shingo Yamamoto, Toshio Yoshizawa
  • PURINONE DERIVATIVE
    Publication number: 20220363684
    Abstract: Compounds represented by general formula (I) (all of the symbols in the formula conform to the definitions in the Description) are compounds that, in addition to having a Btk-selective inhibitory activity, exhibit an excellent metabolic stability and can avoid hepatotoxicity or the like, and as a consequence can provide safe therapeutic agents for diseases in which B cells or mast cells participate.
    Type: Application
    Filed: January 7, 2022
    Publication date: November 17, 2022
    Applicant: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Shingo YAMAMOTO, Toshio YOSHIZAWA
  • PURINONE DERIVATIVE HYDROCHLORIDE
    Publication number: 20220177474
    Abstract: The purinone derivative 6-amino-9-[(3R)-1-(2-butynoyl)-3-pyrrolidinyl]-7-(4-phenoxyphenyl)-7,9-dihydro-8H-purin-8-one hydrochloride has Btk-selective inhibitory activity and, in addition to having excellent metabolic stability, it is a compound that exhibits a high level of solubility and absorption with respect to the free base and can be crystallized, hence it can serve as a therapeutic agent for diseases involving B cells and mast cells.
    Type: Application
    Filed: February 24, 2022
    Publication date: June 9, 2022
    Applicant: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Shingo YAMAMOTO, Toshio YOSHIZAWA
  • Purinone derivative hydrochloride
    Patent number: 11292795
    Abstract: The purinone derivative 6-amino-9-[(3R)-1-(2-butynoyl)-3-pyrrolidinyl]-7-(4-phenoxyphenyl)-7,9-dihydro-8H-purin-8-one hydrochloride has Btk-selective inhibitory activity and, in addition to having excellent metabolic stability, it is a compound that exhibits a high level of solubility and absorption with respect to the free base and can be crystallized, hence it can serve as a therapeutic agent for diseases involving B cells and mast cells.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: April 5, 2022
    Assignee: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Shingo Yamamoto, Toshio Yoshizawa
  • PURINONE DERIVATIVE HYDROCHLORIDE
    Publication number: 20210009593
    Abstract: The purinone derivative 6-amino-9-[(3R)-1-(2-butynoyl)-3-pyrrolidinyl]-7-(4-phenoxyphenyl)-7,9-dihydro-8H-purin-8-one hydrochloride has Btk-selective inhibitory activity and, in addition to having excellent metabolic stability, it is a compound that exhibits a high level of solubility and absorption with respect to the free base and can be crystallized, hence it can serve as a therapeutic agent for diseases involving B cells and mast cells.
    Type: Application
    Filed: September 16, 2020
    Publication date: January 14, 2021
    Applicant: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Shingo YAMAMOTO, Toshio YOSHIZAWA
  • Purinone derivative hydrochloride
    Patent number: 10807981
    Abstract: The purinone derivative 6-amino-9-[(3R)-1-(2-butynoyl)-3-pyrrolidinyl]-7-(4-phenoxyphenyl)-7,9-dihydro-8H-purin-8-one hydrochloride has Btk-selective inhibitory activity and, in addition to having excellent metabolic stability, it is a compound that exhibits a high level of solubility and absorption with respect to the free base and can be crystallized, hence it can serve as a therapeutic agent for diseases involving B cells and mast cells.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: October 20, 2020
    Assignee: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Shingo Yamamoto, Toshio Yoshizawa
  • COMBINATION THERAPY OF AN ANTI CD20 ANTIBODY WITH A BTK INHIBITOR
    Publication number: 20200171153
    Abstract: The present invention is directed to the combination therapy of an anti-CD20 antibody with a BTK inhibitor for the treatment of cancer, especially to the combination therapy of CD20 expressing cancers with a type I anti-CD20 antibody or an afucosylated humanized B-Ly1 antibody and a BTK inhibitor.
    Type: Application
    Filed: November 11, 2019
    Publication date: June 4, 2020
    Inventors: Christian Klein, Toshio Yoshizawa, Tomoko Yasuhiro
  • PURINONE DERIVATIVE
    Publication number: 20200048256
    Abstract: Compounds represented by general formula (I) (all of the symbols in the formula conform to the definitions in the Description) are compounds that, in addition to having a Btk-selective inhibitory activity, exhibit an excellent metabolic stability and can avoid hepatotoxicity or the like, and as a consequence can provide safe therapeutic agents for diseases in which B cells or mast cells participate.
    Type: Application
    Filed: October 16, 2019
    Publication date: February 13, 2020
    Applicant: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Shingo YAMAMOTO, Toshio YOSHIZAWA
  • Purinone derivative
    Patent number: 10487085
    Abstract: Compounds represented by general formula (I) (all of the symbols in the formula conform to the definitions in the Description) are compounds that, in addition to having a Btk-selective inhibitory activity, exhibit an excellent metabolic stability and can avoid hepatotoxicity or the like, and as a consequence can provide safe therapeutic agents for diseases in which B cells or mast cells participate.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: November 26, 2019
    Assignee: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Shingo Yamamoto, Toshio Yoshizawa
  • PURINONE DERIVATIVE HYDROCHLORIDE
    Publication number: 20190315748
    Abstract: The purinone derivative 6-amino-9-[(3R)-1-(2-butynoyl)-3-pyrrolidinyl]-7-(4-phenoxyphenyl)-7,9-dihydro-8H-purin-8-one hydrochloride has Btk-selective inhibitory activity and, in addition to having excellent metabolic stability, it is a compound that exhibits a high level of solubility and absorption with respect to the free base and can be crystallized, hence it can serve as a therapeutic agent for diseases involving B cells and mast cells.
    Type: Application
    Filed: June 25, 2019
    Publication date: October 17, 2019
    Applicant: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Shingo YAMAMOTO, Toshio YOSHIZAWA
  • Prophylactic agent and/or therapeutic agent for diffuse large B-cell lymphoma
    Patent number: 10426778
    Abstract: To provide a medicament which shows more remarkable effect in treatment of activated B-cell like diffuse large B-cell lymphoma ABC-DLBCL than the existing Btk inhibitor, and is excellent in safety. The present compound exhibits more remarkable effect in treatment of activated B-cell like diffuse large B-cell lymphoma (ABC-DLBCL) patients, inter alia, ABC-DLBCL patients having CD79B wild-type gene background than the existing Btk inhibitor, and therefore, it can attain the object of the present invention.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: October 1, 2019
    Assignee: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Toshio Yoshizawa, Ryohei Kozaki
  • Purinone derivative hydrochloride
    Patent number: 10370377
    Abstract: The purinone derivative 6-amino-9-[(3R)-1-(2-butynoyl)-3-pyrrolidinyl]-7-(4-phenoxyphenyl)-7,9-dihydro-8H-purin-8-one hydrochloride has Btk-selective inhibitory activity and, in addition to having excellent metabolic stability, it is a compound that exhibits a high level of solubility and absorption with respect to the free base and can be crystallized, hence it can serve as a therapeutic agent for diseases involving B cells and mast cells.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: August 6, 2019
    Assignee: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Shingo Yamamoto, Toshio Yoshizawa
  • PURINONE DERIVATIVE
    Publication number: 20190169192
    Abstract: Compounds represented by general formula (I) (all of the symbols in the formula conform to the definitions in the Description) are compounds that, in addition to having a Btk-selective inhibitory activity, exhibit an excellent metabolic stability and can avoid hepatotoxicity or the like, and as a consequence can provide safe therapeutic agents for diseases in which B cells or mast cells participate.
    Type: Application
    Filed: February 7, 2019
    Publication date: June 6, 2019
    Applicant: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Shingo YAMAMOTO, Toshio YOSHIZAWA
  • Purinone derivative
    Patent number: 10233185
    Abstract: Compounds represented by general formula (I) (all of the symbols in the formula conform to the definitions in the Description) are compounds that, in addition to having a Btk-selective inhibitory activity, exhibit an excellent metabolic stability and can avoid hepatotoxicity or the like, and as a consequence can provide safe therapeutic agents for diseases in which B cells or mast cells participate.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: March 19, 2019
    Assignee: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Shingo Yamamoto, Toshio Yoshizawa
  • COMBINATION OF A BTK INHIBITOR AND A CHECKPOINT INHIBITOR FOR TREATING CANCERS
    Publication number: 20190054090
    Abstract: Provided herein are methods relating to a therapeutic strategy for treatment of cancer, including hematological malignancies. In particular, the methods include administration of a Btk inhibitor and a checkpoint inhibitor, including combinations in which the Btk inhibitor is 6-amino-9-[(3R)-1-(2-butynoyl)-3-pyrrolidinyl]-7-(4-phenoxyphenyl)-7,9-dihydro-8H-purin-8-one, or a pharmaceutically acceptable salt thereof, and the checkpoint inhibitor is selected from inhibitors of PD-1, PD-L1, and CTLA-4.
    Type: Application
    Filed: September 30, 2016
    Publication date: February 21, 2019
    Inventors: Sriram Venkataraman, Daniel B. Tumas, Kohei Tanaka, Tomoko Yasuhiro, Toshio Yoshizawa
  • PROPHYLACTIC AGENT AND/OR THERAPEUTIC AGENT FOR DIFFUSE LARGE B-CELL LYMPHOMA
    Publication number: 20190054091
    Abstract: To provide a medicament which shows more remarkable effect in treatment of activated B-cell like diffuse large B-cell lymphoma (ABC-CLBCL) than the existing Btk inhibitor, and is excellent in safety. The present compound exhibits more remarkable effect in treatment of activated B-cell like diffuse large B-cell lymphoma (ABC-DLBCL) patients, inter alia, ABC-DLBCL patients having CD79B wild-type gene background than the existing Btk inhibitor, and therefore, it can attain the object of the present invention.
    Type: Application
    Filed: October 23, 2018
    Publication date: February 21, 2019
    Applicant: ONO PHARMACEUTICAL CO., LTD.
    Inventors: Toshio YOSHIZAWA, Ryohei KOZAKI
  • COMBINATION THERAPIES FOR TREATING B-CELL MALIGNANCIES
    Publication number: 20180353512
    Abstract: Provided herein are methods that relate to a therapeutic strategy for treatment of a B-cell malignancy. In particular, the methods include administration of a PI3K inhibitor and a BTK inhibitor.
    Type: Application
    Filed: June 22, 2016
    Publication date: December 13, 2018
    Inventors: Helen Collins, Julie Di Paolo, Kathy Keegan, Ryohei Kozaki, Sarah Meadows, Cara Nelson, Christophe Queva, Srinivasan Ramanathan, Stacey Tannheimer, Daniel Tumas, Tomoko Yasuhiro, Toshio Yoshizawa