Patents by Inventor Takashi Kuroyanagi

Takashi Kuroyanagi 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).

  • Hemoglobin A1c determination method, enzyme to be used therefor, and production method thereof
    Patent number: 7588910
    Abstract: There is provided a method for specifically determining a glycated ?-chain N-terminal of glycated hemoglobin using enzymes without a separation operation, and a determination reagent kit therefor. A protease that cleaves a glycated amino acid and/or a glycated peptide from a glycated ?-chain N-terminal without substantially cleaving a glycated amino acid or a glycated peptide from a glycated ?-chain N-terminal of glycated hemoglobin or a fragment thereof is screened. The method of specifically determining a glycated ?-chain N-terminal of glycated hemoglobin and the determination reagent kit are provided by using the protease obtained by the screening method. According to the present invention, a glycated ?-chain N-terminal of glycated hemoglobin can specifically be determined without a separation operation.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: September 15, 2009
    Assignees: Asahi Kasei Pharma Corporation, Ichibiki Co., Ltd.
    Inventors: Takeshi Matsuoka, Shinji Koga, Takuji Kouzuma, Issei Yoshioka, Atsuhisa Nishimura, Homare Itou, Toshihiko Kumazawa, Takashi Kuroyanagi
  • Hemoglobin A1c Determination Method, Enzyme to be Used therefor, and Production Method Thereof
    Publication number: 20080113381
    Abstract: There is provided a method for specifically determining a glycated ?-chain N-terminal of glycated hemoglobin using enzymes without a separation operation, and a determination reagent kit therefor. A protease that cleaves a glycated amino acid and/or a glycated peptide from a glycated ?-chain N-terminal without substantially cleaving a glycated amino acid or a glycated peptide from a glycated ?-chain N-terminal of glycated hemoglobin or a fragment thereof is screened. The method of specifically determining a glycated ?-chain N-terminal of glycated hemoglobin and the determination reagent kit are provided by using the protease obtained by the screening method. According to the present invention, a glycated ?-chain N-terminal of glycated hemoglobin can specifically be determined without a separation operation.
    Type: Application
    Filed: May 21, 2004
    Publication date: May 15, 2008
    Inventors: Takeshi Matsuoka, Shinji Koga, Takuji Kouzuma, Issei Yoshioka, Atsuhisa Nishimura, Homare Itou, Toshihiko Kumazawa, Takashi Kuroyanagi
  • Copper alloy for reliable electrical connection
    Patent number: 4269623
    Abstract: This invention relates to a copper alloy for reliable electrical connection comprising 0.5-3.0 wt% of Fe, 0.3-0.8 wt% of Zn and the balance being composed of Cu and impurities thereof, which is characterized by that it excels in connecting characteristics relative to connection by compression and, particularly does not permit a glow discharge and growth of cuprous oxide.
    Type: Grant
    Filed: September 19, 1979
    Date of Patent: May 26, 1981
    Assignee: Furukawa Metals Company, Ltd.
    Inventors: Sadao Inoue, Tetsuya Umemura, Hiroshi Suzuki, Takashi Kuroyanagi