Patents by Inventor Takashi Kayahara

Takashi Kayahara 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).

  • Benzamidine derivatives
    Patent number: 6784191
    Abstract: A benzamidine derivative of the following formula, analogs thereof and pharmaceutically acceptable salts thereof have an effect of inhibiting the blood coagulation based on their excellent effect of inhibiting activated blood-coagulation factor X. Thus, a blood-coagulation inhibitor or an agent for preventing or treating thrombosis or embolism, containing one of those compounds as the active ingredient, is provided.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: August 31, 2004
    Assignee: Ajinomoto Co., Inc.
    Inventors: Kaoru Yoshida, Tadakiyo Nakagawa, Takashi Kayahara
  • Protein having antithrombotic activity and method for producing the same
    Publication number: 20040161822
    Abstract: A method for producing a protein having an antithrombotic activity, which comprises replacing, in a protein that has an amino acid sequence having a homology of not.less than 30% to the amino acid sequence of SEQ ID NO: 1 and forms a higher order structure composed of a first &bgr; strand (&bgr;1), a first a helix (&agr;1), a second &agr; helix (&agr;2), a second &bgr; strand (&bgr;2), a loop, a third &bgr; strand (&bgr;3), a fourth &bgr; strand (&bgr;4) and a fifth &bgr; strand (&bgr;5) in this order from the amino terminus, at least one amino acid residue in a region from &agr;2 to &bgr;2 and/or a region from &bgr;3 to &bgr;4 so that electric charge of the amino acid residue is changed towards positive direction.
    Type: Application
    Filed: January 2, 2004
    Publication date: August 19, 2004
    Applicant: AJINOMOTO CO., INC.
    Inventors: Naoyuki Fukuchi, Morikazu Kito, Takashi Kayahara, Fumie Futaki, Kohki Ishikawa, Eiichiro Suzuki, Keiko Gondoh, Nobuhisa Shimba, Naoyuki Yamada
  • Protein having antithrombotic activity and method for producing the same
    Patent number: 6710031
    Abstract: A method for producing a protein having an antithrombotic activity, which comprises replacing, in a protein that has an amino acid sequence having a homology of not less than 30% to the amino acid sequence of SEQ ID NO: 1 and forms a higher order structure composed of a first &bgr; strand (&bgr;1), a first &agr; helix (&agr;1), a second &agr; helix (&agr;2), a second &bgr; strand (&bgr;2), a loop, a third &bgr; strand (&bgr;3), a fourth &bgr; strand (&bgr;4) and a fifth &bgr; strand (&bgr;5) in this order from the amino terminus, at least one amino acid residue in a region from &agr;2 to &bgr;2 and/or a region from &bgr;3 to &bgr;4 so that electric charge of the amino acid residue is changed towards positive direction.
    Type: Grant
    Filed: October 4, 2001
    Date of Patent: March 23, 2004
    Assignee: Ajinomoto Co., Inc.
    Inventors: Naoyuki Fukuchi, Morikazu Kito, Takashi Kayahara, Fumie Futaki, Kohki Ishikawa, Eiichiro Suzuki, Keiko Gondoh, Nobuhisa Shimba, Naoyuki Yamada
  • Amidinophenylpyruvic acid derivatives
    Patent number: 6710056
    Abstract: An amidinophenylpyruvic acid derivative of the following formula, analogs thereof and pharmaceutically acceptable salts thereof have an excellent antagonistic effect against activated blood coagulation factor VII.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: March 23, 2004
    Assignee: Ajinomoto Co., Inc.
    Inventors: Masayuki Sugiki, Kazuyuki Sagi, Kohichi Fujita, Takashi Kayahara, Shunji Takehana, Kuniya Sakurai, Kazumi Tashiro
  • Benzodiazepine derivatives
    Publication number: 20030186969
    Abstract: The present invention provides benzodiazepine derivatives of the following formula, analogs thereof and pharmaceutically acceptable salts thereof. The compounds of the present invention have an excellent effect of inhibiting activated blood-coagulation factor X. These compounds are usable as agents for treating various diseases concerned with the activated blood-coagulation factor X.
    Type: Application
    Filed: March 27, 2003
    Publication date: October 2, 2003
    Applicant: AJINOMOTO CO. INC
    Inventors: Tadakiyo Nakagawa, Munetaka Tokumasu, Kazumi Tashiro, Mitsuo Takahashi, Takashi Kayahara, Shunji Takehana, Yuki Kajigaya, Kaoru Yoshida, Kuniya Sakurai
  • Amidinophenylpyruvic acid derivatives
    Publication number: 20030109547
    Abstract: An amidinophenylpyruvic acid derivative of the following formula, analogs thereof and pharmaceutically acceptable salts thereof have an excellent antagonistic effect against activated blood coagulation factor VII.
    Type: Application
    Filed: June 5, 2002
    Publication date: June 12, 2003
    Applicant: AJINOMOTO CO. INC
    Inventors: Masayuki Sugiki, Kazuyuki Sagi, Kohichi Fujita, Takashi Kayahara, Shunji Takehana, Kuniya Sakurai, Kazumi Tashiro
  • Protein having antithrombotic activity and method for producing the same
    Publication number: 20020198363
    Abstract: A method for producing a protein having an antithrombotic activity, which comprises replacing, in a protein that has an amino acid sequence having a homology of not less than 30% to the amino acid sequence of SEQ ID NO: 1 and forms a higher order structure composed of a first &bgr; strand (&bgr;1), a first &agr; helix (&agr;1), a second &agr; helix (&agr;2), a second &bgr; strand (&bgr;2), a loop, a third &bgr; strand (&bgr;3), a fourth &bgr; strand (&bgr;4) and a fifth &bgr; strand (&bgr;5) in this order from the amino terminus, at least one amino acid residue in a region from &agr;2 to &bgr;2 and/or a region from &bgr;3 to &bgr;4 so that electric charge of the amino acid residue is changed towards positive direction.
    Type: Application
    Filed: October 4, 2001
    Publication date: December 26, 2002
    Applicant: AJINOMOTO CO., INC.
    Inventors: Naoyuki Fukuchi, Morikazu Kito, Takashi Kayahara, Fumie Futaki, Kohki Ishikawa, Eiichiro Suzuki, Keiko Gondoh, Nobuhisa Shimba, Naoyuki Yamada
  • Benzamidine derivatives
    Publication number: 20020193348
    Abstract: A benzamidine derivative of the following formula, analogs thereof and pharmaceutically acceptable salts thereof have an effect of inhibiting the blood coagulation based on their excellent effect of inhibiting activated blood-coagulation factor X. Thus, a blood-coagulation inhibitor or an agent for preventing or treating thrombosis or embolism, containing one of those compounds as the active ingredient, is provided.
    Type: Application
    Filed: June 10, 2002
    Publication date: December 19, 2002
    Applicant: AJINOMOTO CO., INC.
    Inventors: Kaoru Yoshida, Tadakiyo Nakagawa, Takashi Kayahara
  • Benzamidine derivative
    Publication number: 20020107290
    Abstract: Benzamidine derivatives of the following formula, analogs thereof and pharmaceutically acceptable salts thereof are provided. These compounds have an effect of inhibiting activated blood-coagulation factor X, and they are useful as agents for preventing or treating various diseases caused by thrombi or emboli.
    Type: Application
    Filed: February 14, 2002
    Publication date: August 8, 2002
    Applicant: AJINOMOTO CO., INC.
    Inventors: Tadakiyo Nakagawa, Kazuyuki Sagi, Kaoru Yoshida, Yumiko Fukuda, Masataka Shoji, Shunji Takehana, Takashi Kayahara, Akira Takahara
  • Benzamidine derivatives
    Patent number: 6410538
    Abstract: Benzamidine derivatives of the following formula, analogs thereof and pharmaceutically acceptable salts thereof are provided. These compounds have an effect of inhibiting activated blood-coagulation factor X, and they are useful as agents for preventing or treating various diseases caused by thrombi or emboli.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: June 25, 2002
    Assignee: Ajinomoto Co., Inc.
    Inventors: Tadakiyo Nakagawa, Kazuyuki Sagi, Kaoru Yoshida, Yumiko Fukuda, Masataka Shoji, Shunji Takehana, Takashi Kayahara, Akira Takahara
  • Benzamidine derivatives
    Publication number: 20010056123
    Abstract: Benzamidine derivatives of the following formula, analogs thereof and pharmaceutically acceptable salts thereof are provided. These compounds have an effect of inhibiting activated blood-coagulation factor X, and they are useful as agents for preventing or treating various diseases caused by thrombi or emboli.
    Type: Application
    Filed: December 8, 2000
    Publication date: December 27, 2001
    Applicant: AJINOMOTO CO., INC
    Inventors: Tadakiyo Nakagawa, Kazuyuki Sagi, Kaoru Yoshida, Yumiko Fukuda, Masataka Shoji, Shunji Takehana, Takashi Kayahara, Akira Takahara