Patents by Inventor Kumiko Sasagawa

Kumiko Sasagawa 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).

  • Protein assay method specific to TRACP-5b (tartrate resistant acid phosphatase 5b)
    Patent number: 10214592
    Abstract: The purpose of the present invention is to provide a monoclonal antibody that is useful in specifically assaying tartrate resistant acid phosphatase 5b (TRACP-5b). A hybridoma producing a monoclonal antibody against TRACP-5b, said monoclonal antibody showing higher reactivity with TRACP-5b than with tartrate resistant acid phosphatase 5a (TRACP-5a) and, therefore, being specific to TRACP-5b, is obtained by cell fusion using, as an antigen, human recombinant TRACP-5b purified from silkworm silk gland. By using this monoclonal antibody, TRACP-5b in a specimen can be highly sensitively and specifically detected.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: February 26, 2019
    Assignee: NITTO BOSEKI CO., LTD.
    Inventors: Wataru Kikuchi, Kumiko Sasagawa, Kenta Noda
  • PROTEIN ASSAY METHOD SPECIFIC TO TRACP-5b (TARTRATE RESISTANT ACID PHOSPHATASE 5b)
    Publication number: 20170267782
    Abstract: The purpose of the present invention is to provide a monoclonal antibody that is useful in specifically assaying tartrate resistant acid phosphatase 5b (TRACP-5b). A hybridoma producing a monoclonal antibody against TRACP-5b, said monoclonal antibody showing higher reactivity with TRACP-5b than with tartrate resistant acid phosphatase 5a (TRACP-5a) and, therefore, being specific to TRACP-5b, is obtained by cell fusion using, as an antigen, human recombinant TRACP-5b purified from silkworm silk gland. By using this monoclonal antibody, TRACP-5b in a specimen can be highly sensitively and specifically detected.
    Type: Application
    Filed: August 7, 2015
    Publication date: September 21, 2017
    Applicant: NITTO BOSEKI CO., LTD.
    Inventors: Wataru KIKUCHI, Kumiko SASAGAWA, Kenta NODA
  • Method of immunoassay tartrate resistant acid phosphatase 5b and kit to be used therein
    Patent number: 7465556
    Abstract: Specific and accurate immunoassay of tartrate resistant acid phosphatase 5b (TRACP 5b) in a specimen may be carried out by bonding TRACP 5b in the specimen to an antibody, subjecting the TRACP 5b bonded to the antibody to enzyme reaction with a 2-halo-4-nitrophenylphosphoric acid or a salt thereof, a substrate for TRACP 5b, and then assaying the enzymatic activity of TRACP 5b.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: December 16, 2008
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Toshihide Miura, Tatsuya Ohashi, Kumiko Sasagawa, Katsuhiro Katayama
  • Method of immunoassaying taritrate resistant acid phosphatase 5b and kit to be used therein
    Publication number: 20060154317
    Abstract: Specific and accurate immunoassay of tartrate resistant acid phosphatase 5b (TRACP 5b) in a specimen may be carried out by bonding TRACP 5b in the specimen to an antibody, subjecting the TRACP 5b bonded to the antibody to enzyme reaction with a 2-halo-4-nitrophenylphosphoric acid or a salt thereof, a substrate for TRACP 5b, and then assaying the enzymatic activity of TRACP 5b.
    Type: Application
    Filed: February 20, 2004
    Publication date: July 13, 2006
    Applicant: NITTO BOSEKI CO., LTD
    Inventors: Toshihide Miura, Tatsuya Ohashi, Kumiko Sasagawa, Katsuhiro Katayama
  • Monoclonal antibody specific to tartrate-resistant acid phosphatase 5b and use thereof
    Patent number: 7074903
    Abstract: Monocolonal antibodies having a higher reactivity with tartrate-resistant acid phosphatase 5b (TRACP 5b) than tartrate-resistant acid phosphatase 5a (TRACP 5a) and having a higher specificity to TRACP 5b can be obtained by cell fusion using as antigens TRACP 5b purified from human osteoclasts. By using the monoclonal antibody, TRACP 5b in a sample can be detected specifically with a high sensitivity.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: July 11, 2006
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Tatsuya Ohashi, Toshihide Miura, Yoshihiko Igarashi, Kumiko Sasagawa, Katsuhiro Katayama
  • Monoclonal antibody specific to tartrate-resistant acid phosphatase 5b and use thereof
    Publication number: 20030204062
    Abstract: Monocolonal antibodies having a higher reactivity with tartrate-resistant acid phosphatase 5b (TRACP 5b) than tartrate-resistant acid phosphatase 5a (TRACP 5a) and having a higher specificity to TRACP 5b can be obtained by cell fusion using as antigens TRACP 5b purified from human osteoclasts. By using the monoclonal antibody, TRACP 5b in a sample can be detected specifically with a high sensitivity.
    Type: Application
    Filed: April 29, 2003
    Publication date: October 30, 2003
    Applicant: NITTO BOSEKI CO., LTD.
    Inventors: Tatsuya Ohashi, Toshihide Miura, Yoshihiko Igarashi, Kumiko Sasagawa, Katsuhiro Katayama