Patents by Inventor Noriyuki Izutani

Noriyuki Izutani 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).

  • REAGENT COMPRISING ANTIBODY FROM WHICH PART OF Fc REGION IS DELETED
    Publication number: 20230122067
    Abstract: The present invention provides a reagent comprising an antibody from which part of CH3 or CH2 in the Fc region is deleted.
    Type: Application
    Filed: March 25, 2021
    Publication date: April 20, 2023
    Applicant: Denka Company Limited
    Inventors: Noriyuki IZUTANI, Daisuke OGASAWARA, Hiroaki OGURA, Masako MAMBA, Jun NISHIMURA, Kimitaka YAMAMOTO, Haruto ISHIKAWA
  • Method for measuring hemagglutinin from influenza virus
    Patent number: 10365277
    Abstract: Disclosed is a novel method for measuring haemagglutinin of an influenza virus, which can construct an assay system in a shorter period of time than a sandwich immunoassay method using two kinds of anti-haemagglutinin antibodies. The method for measuring haemagglutinin of an influenza virus is achieved by a sandwich immunoassay method comprising sandwiching the haemagglutinin between a lectin which binds to the haemagglutinin but does not bind to an antibody, and an anti-haemagglutinin antibody which undergoes antigen-antibody reaction with the haemagglutinin.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: July 30, 2019
    Assignee: DENKA SEIKEN CO., LTD.
    Inventors: Ryotaro Mitsumata, Noriyuki Izutani
  • METHOD FOR MEASURING HEMAGGLUTININ FROM INFLUENZA VIRUS
    Publication number: 20150233922
    Abstract: Disclosed is a novel method for measuring haemagglutinin of an influenza virus, which can construct an assay system in a shorter period of time than a sandwich immunoassay method using two kinds of anti-haemagglutinin antibodies. The method for measuring haemagglutinin of an influenza virus is achieved by a sandwich immunoassay method comprising sandwiching the haemagglutinin between a lectin which binds to the haemagglutinin but does not bind to an antibody, and an anti-haemagglutinin antibody which undergoes antigen-antibody reaction with the haemagglutinin.
    Type: Application
    Filed: October 3, 2013
    Publication date: August 20, 2015
    Applicant: DENKA SEIKEN CO., LTD.
    Inventors: Ryotaro Mitsumata, Noriyuki Izutani
  • Method for producing purified influenza virus antigen
    Patent number: 8709780
    Abstract: The present invention aims to provide a method which enables efficient removal of impurities such as the host proteins from an influenza virus culture liquid by a simple operation, allowing separation and purification of an influenza virus antigen. The method of the present invention for producing a purified influenza virus antigen comprises the step of treating a sample containing an influenza virus with a surfactant, the step of bringing the sample after the treatment into contact with hydroxyapatite in the presence of the surfactant, and the step of recovering a hydroxyapatite-non-adsorbed fraction.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: April 29, 2014
    Assignee: Denka Seiken Co., Ltd.
    Inventors: Koichi Takahashi, Kazuaki Maeda, Noriyuki Izutani, Shinichi Yanagi, Yukiko Nakashima
  • METHOD FOR PRODUCING PURIFIED INFLUENZA VIRUS ANTIGEN
    Publication number: 20110182940
    Abstract: The present invention aims to provide a method which enables efficient removal of impurities such as the host proteins from an influenza virus culture liquid by a simple operation, allowing separation and purification of an influenza virus antigen. The method of the present invention for producing a purified influenza virus antigen comprises the step of treating a sample containing an influenza virus with a surfactant, the step of bringing the sample after the treatment into contact with hydroxyapatite in the presence of the surfactant, and the step of recovering a hydroxyapatite-non-adsorbed fraction.
    Type: Application
    Filed: September 29, 2009
    Publication date: July 28, 2011
    Inventors: Koichi Takahashi, Kazuaki Maeda, Noriyuki Izutani, Shinichi Yanagi, Yukiko Nakashima
  • Hyaluronic acid-methotrexate conjugate
    Patent number: 7807675
    Abstract: An object of the present invention is to provide a hyaluronic acid-methotrexate conjugate useful as a therapeutic drug for joint disorders. There is provided a hyaluronic acid-methotrexate conjugate useful for the treatment of joint disorders, wherein methotrexate is conjugated with a hydroxy group of hyaluronic acid through a linker containing a peptide chain consisting of 1 to 8 amino acids, and the linker is conjugated with the hyaluronic acid through a carbamate group.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: October 5, 2010
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hitoshi Ikeya, Tadashi Morikawa, Koichi Takahashi, Noriyuki Izutani, Tatsuya Tamura, Akira Okamachi, Takenori Ishizawa, Haruhiko Sato, Yoshinobu Higuchi, Tatsuya Kato, Akie Honma
  • Hyaluronic Acid-Methotrexate Conjugate
    Publication number: 20090093414
    Abstract: An object of the present invention is to provide a hyaluronic acid-methotrexate conjugate useful as a therapeutic drug for joint disorders. There is provided a hyaluronic acid-methotrexate conjugate useful for the treatment of joint disorders, wherein methotrexate is conjugated with a hydroxy group of hyaluronic acid through a linker containing a peptide chain consisting of 1 to 8 amino acids, and the linker is conjugated with the hyaluronic acid through a carbamate group.
    Type: Application
    Filed: April 1, 2005
    Publication date: April 9, 2009
    Applicant: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hitoshi Ikeya, Tadashi Morikawa, Koichi Takahashi, Noriyuki Izutani, Tatsuya Tamura, Akira Okamachi, Takenori Ishizawa, Haruhiko Sato, Yoshinobu Higuchi, Tatsuya Kato, Akie Honma