Patents by Inventor Tsukasa Kodaira

Tsukasa Kodaira 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).

  • Dioxin derivatives and method of measurement therewith
    Publication number: 20030108955
    Abstract: The invention provides a highly sensitive measurement and detection technique for dioxins, which has advantages inherent to immunoassay; and markers to be used in the technique.
    Type: Application
    Filed: November 1, 2002
    Publication date: June 12, 2003
    Inventors: Noboru Yanaihara, Tsukasa Kodaira
  • Estradiol derivative and immunoassy using the same
    Patent number: 6509462
    Abstract: The present invention provides a highly sensitive immunoassay system for estrogens, which utilizes as a labeled compound a biotinylated estradiol derivative of the formula (1) wherein one of R1 and R2 is hydrogen and the other is a group represented by wherein R3s are the same or different and represent an arginine residue or a lysine residue, x is 0 or 1, y is an integer from 1 to 5, and z is an integer from 1 to 3.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: January 21, 2003
    Assignees: Otsuka Pharmaceutical Co., Ltd., Yanaihara Institute, Inc.
    Inventors: Noboru Yanaihara, Ikuo Kato, Kazuyuki Kitamura, Tsukasa Kodaira
  • Immunoassay for phthalic acid esters
    Patent number: 6399318
    Abstract: The present invention provides an immunoassay for phthalic acid esters, which comprises measuring the phthalic acid esters contained in a sample using an antibody produced with a conjugate of a carrier protein and a phthalic acid ester derivative represented by the formula wherein R1 and R2 may be the same or different and are hydrogen, alkyl, cycloalkyl or phenylalkyl, with the proviso that both of R1 and R2 are not hydrogen; m is an integer from 1 to 5; and Y is amino or carboxyl.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: June 4, 2002
    Assignees: Otsuka Pharmaceutical Co., Ltd., Yanaihara Institute Inc.
    Inventors: Noboru Yanaihara, Ikuo Kato, Shingo Nagasawa, Tsukasa Kodaira
  • Estradiol derivative and immunoassay using the same
    Publication number: 20020028929
    Abstract: The present invention provides a highly sensitive immunoassay system for estrogens, which utilizes as a labeled compound a biotinylated estradiol derivative of the formula (1) 1
    Type: Application
    Filed: July 17, 2001
    Publication date: March 7, 2002
    Applicant: OTSUKA PHARMACEUTICAL CO., LTD.
    Inventors: Noboru Yanaihara, Ikuo Kato, Kazuyuki Kitamura, Tsukasa Kodaira