Patents by Inventor Kiichi YOSHIMURA

Kiichi YOSHIMURA 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).

  • Immunoglobulin binding protein, and affinity support using same
    Patent number: 11884705
    Abstract: Provided are a protein L-derived immunoglobulin binding protein having an increased antibody dissociation rate under acidic conditions, and an affinity support using the same. Disclosed are an immunoglobulin binding protein comprising at least one mutant of an immunoglobulin binding domain, and an affinity support comprising a solid-phase support having the immunoglobulin binding protein bound thereto. A mutant of the immunoglobulin binding domain consists of an amino acid sequence having an identity of at least 85% with the sequence set forth in any one of SEQ ID NO:1 to SEQ ID NO:9 and a predetermined mutation, and the mutant has immunoglobulin ? chain binding activity.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: January 30, 2024
    Assignees: JSR CORPORATION, JSR Life Sciences Corporation, JSR Life Sciences, LLC, JSR Micro N.V.
    Inventors: Jun-ichi Yasuoka, Kiichi Yoshimura, Tomoaki Haga
  • Immunoglobulin binding protein, and affinity support using same
    Patent number: 11753449
    Abstract: Provided are a protein L-derived immunoglobulin binding protein having an increased alkali tolerance, and an affinity support using the same. Disclosed are an immunoglobulin binding protein comprising at least one mutant of an immunoglobulin binding domain, and an affinity support comprising a solid-phase support having the immunoglobulin binding protein bound thereto. A mutant of the immunoglobulin binding domain consists of an amino acid sequence having an identity of at least 85% with the sequence set forth in any one of SEQ ID NO:1 to SEQ ID NO:9 and a predetermined mutation, and the mutant has immunoglobulin ? chain binding activity.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: September 12, 2023
    Assignees: JSR CORPORATION, JSR Life Sciences Corporation, JSR Life Sciences, LLC, JSR Micro N.V.
    Inventors: Jun-ichi Yasuoka, Kiichi Yoshimura
  • IMMUNOGLOBULIN BINDING PROTEIN, AND AFFINITY SUPPORT USING SAME
    Publication number: 20210163545
    Abstract: Provided are a protein L-derived immunoglobulin binding protein having an increased alkali tolerance, and an affinity support using the same. Disclosed are an immunoglobulin binding protein comprising at least one mutant of an immunoglobulin binding domain, and an affinity support comprising a solid-phase support having the immunoglobulin binding protein bound thereto. A mutant of the immunoglobulin binding domain consists of an amino acid sequence having an identity of at least 85% with the sequence set forth in any one of SEQ ID NO:1 to SEQ ID NO:9 and a predetermined mutation, and the mutant has immunoglobulin ? chain binding activity.
    Type: Application
    Filed: September 25, 2018
    Publication date: June 3, 2021
    Applicants: JSR CORPORATION, JSR Life Sciences Corporation, JSR Micro Inc., JSR Micro N. V.
    Inventors: Jun-ichi YASUOKA, Kiichi YOSHIMURA
  • IMMUNOGLOBULIN BINDING PROTEIN, AND AFFINITY SUPPORT USING SAME
    Publication number: 20200262873
    Abstract: Provided are a protein L-derived immunoglobulin binding protein having an increased antibody dissociation rate under acidic conditions, and an affinity support using the same. Disclosed are an immunoglobulin binding protein comprising at least one mutant of an immunoglobulin binding domain, and an affinity support comprising a solid-phase support having the immunoglobulin binding protein bound thereto. A mutant of the immunoglobulin binding domain consists of an amino acid sequence having an identity of at least 85% with the sequence set forth in any one of SEQ ID NO:1 to SEQ ID NO:9 and a predetermined mutation, and the mutant has immunoglobulin ? chain binding activity.
    Type: Application
    Filed: September 25, 2018
    Publication date: August 20, 2020
    Applicants: JSR CORPORATION, JSR Life Sciences Corporation, JSR Micro Inc., JSR Micro N.V.
    Inventors: Jun-ichi YASUOKA, Kiichi YOSHIMURA, Tomoaki HAGA