Patents by Inventor Tadahiko Kitano

Tadahiko Kitano 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).

  • Sheets, kits and methods for detecting antigens or antibodies
    Patent number: 5827669
    Abstract: A detection sheet capable of detecting an antigen or antibody in a biological fluid with a high sensitivity in a simple operation, as well as a detection kit and detection method using the detection sheet. The detection sheet comprises (a) a fibrous aggregate with carried particles of a calcium phosphate compound having an average particle diameter of about 0.01 to 200 microns and a Ca/P ratio of about 1.0 to 2.0, and (b) an avidin, streptavidin or avidin derivative from which carbohydrates have been extracted immobilized on said calcium phosphate compound. After a biotinylated antigen or antibody is bonded to the immobilized avidin, streptavidin, or avidin derivative of the detection sheet, the detection sheet is contacted with a test solution to thereby bond an antigen or antibody of the test solution to the detection sheet.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: October 27, 1998
    Assignees: Nakayama, Mikio, Kitana, Tadahiko, Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Mikio Nakayama, Tadahiko Kitano, Ayumi Mitoh, Tetsuro Ogawa, Tsuneo Hiraide
  • Test plates for agglutination test and production process thereof
    Patent number: 5736099
    Abstract: A test plate for an agglutination test which comprises a plate with a plurality of wells formed thereon, each of the wells having adhered to a surface thereof a protein A and/or a protein G. The agglutination test plate, according to the present invention, when used in an agglutination test, can ensure a clear judgment concerning the formation of an agglutinative image or a non-agglutinative image, along with a good determination sensitivity. A process for the production of such an agglutination test plate is also provided.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: April 7, 1998
    Assignees: Asahi Kogaku Kogyo Kabushiki Kaisha, Tadahiko Kitano, Mikio Nakayama
    Inventors: Tsuneo Hiraide, Tetsuro Ogawa, Ayumi Mitoh, Tadahiko Kitano, Mikio Nakayama
  • Granular polymer composite and production process thereof as well as diagnostic agent
    Patent number: 5540995
    Abstract: A granular polymer composite comprising polymeric granules having coated on a surface thereof a calcium phosphate compound, at least a part of the particles of the calcium phosphate compound penetrates into the polymeric granules. The composite has a high bonding strength between the polymeric granules as a matrix and a coating of the calcium phosphate compound and also can fully exhibit the functions of a calcium phosphate compound. Using the granular polymer composite, a diagnostic agent which comprises of an antigen or antibody is adsorbed and immobilized on the composite and is therefore useful in diagnostic tests utilizing an antigen-antibody reaction for a number of infectious diseases.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: July 30, 1996
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Tadahiko Kitano, Mikio Nakayama, Tetsuro Ogawa, Tsuneo Hiraide