Patents by Inventor Tetsuro Kuga

Tetsuro Kuga 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).

  • Patent number: 6962984
    Abstract: A novel DNA whose expression level fluctuates in leukocytes of IgA nephropathy patients in comparison with leukocytes of healthy persons, a process for isolating the DNA, a novel protein encoded by the DNA, an antibody recognizing the protein, methods for detecting the protein and the DNA, and methods of diagnosis and treatment of IgA nephropathy.
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: November 8, 2005
    Assignee: Nihon University
    Inventors: Tetsuyoshi Ishiwata, Mikiko Sakurada, Ayako Kawabata, Satoshi Nakagawa, Tatsunari Nishi, Tetsuro Kuga, Shigemasa Sawada, Masami Takei, Kenji Shibata, Akiko Furuya
  • Patent number: 6828428
    Abstract: The present invention relates to a novel DNA related to IgA nephropathy obtained by a differential display method [FEBS Letters, 351, 231 (1994)] taking note of an mRNA whose expression level fluctuates in leukocytes of IgA nephropathy patients in comparison with leukocytes of healthy persons, a process for isolating the DNA, a method for detecting the DNA, a novel protein encoded by the DNA, an antibody recognizing the protein, a method for detecting the protein, and diagnosis and treatment of IgA nephropathy.
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: December 7, 2004
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tetsuyoshi Ishiwata, Mikiko Sakurada, Ayako Nishimura, Satoshi Nakagawa, Tatsunari Nishi, Tetsuro Kuga, Shigemasa Sawada, Masami Takei
  • Patent number: 6790944
    Abstract: The present invention relates to a novel protein isolated from the leukocyte of IgA nephropathy patients, and DNA encoding the protein. It also relates to an oligonucleotide based on the nucleotide sequence complementary with the DNA, an antibody which specifically reacts with the protein and, furthermore, diagnostic and therapeutic drugs of IgA nephropathy comprising it.
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: September 14, 2004
    Assignees: Kyowa Hakko Kogyo Co., Ltd., Kazusa DNA Research Institute Foundation
    Inventors: Tetsuyoshi Ishiwata, Mikiko Sakurada, Ayako Kawabata, Satoshi Nakagawa, Tetsuro Kuga, Tatsunari Nishi, Nobuo Nomura, Takahiro Nagase, Shigemasa Sawada, Masami Takei
  • Publication number: 20030207828
    Abstract: A novel DNA whose expression level fluctuates in leukocytes of IgA nephropathy patients in comparison with leukocytes of healthy persons, a process for isolating the DNA, a novel protein encoded by the DNA, an antibody recognizing the protein, methods for detecting the protein and the DNA, and methods of diagnosis and treatment of IgA nephropathy.
    Type: Application
    Filed: December 7, 2000
    Publication date: November 6, 2003
    Inventors: Tetsuyoshi Ishiwata, Mikiko Sakurada, Ayako Kawabata, Satoshi Nakagawa, Tatsunari Nishi, Tetsuro Kuga, Shigemasa Sawada, Masami Takei, Kenji Shibata, Akiko Furuya
  • Publication number: 20020068707
    Abstract: The present invention relates to a novel DNA related to IgA nephropathy obtained by a differential display method [FEBS Letters, 351, 231 (1994)] taking note of an mRNA whose expression level fluctuates in leukocytes of IgA nephropathy patients in comparison with leukocytes of healthy persons, a process for isolating the DNA, a method for detecting the DNA, a novel protein encoded by the DNA, an antibody recognizing the protein, a method for detecting the protein, and diagnosis and treatment of IgA nephropathy.
    Type: Application
    Filed: June 4, 1998
    Publication date: June 6, 2002
    Inventors: TETSUYOSHI ISHIWATA, MIKIKO SAKURADA, AYAKO NISHIMURA, SATOSHI NAKAGAWA, TATSUNARI NISHI, TETSURO KUGA, SHIGEMASA SAWADA, MASAMI TAKEI
  • Patent number: 6027720
    Abstract: Novel hG-CSF polypeptide derivatives having an amino acid sequence derived from the amino acid sequence of the human granulocyte colony stimulating factor polypeptide by substitution of at least one amino acid by a different amino acid and/or deletion of at least one amino acid, recombinant plasmids containing a DNA fragment insert coding for any of these hG-CSF polypeptide derivatives, microorganisms carrying one of such plasmids, methods of producing the hG-CSF polypeptide derivatives using the microorganisms, a monoclonal antibody binding to the hG-CSF polypeptide derivative, and chemically modified hG-CSF or derivatives thereof are disclosed.
    Type: Grant
    Filed: July 13, 1994
    Date of Patent: February 22, 2000
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tetsuro Kuga, Hiromasa Miyaji, Moriyuki Sato, Masami Okabe, Makoto Morimoto, Seiga Itoh, Motoo Yamasaki, Yoshiharu Yokoo, Kazuo Yamaguchi, Hajime Yoshida, Yoshinori Komatsu
  • Patent number: 5994518
    Abstract: Novel hG-CSF polypeptide derivatives having an amino acid sequence derived from the amino acid sequence of the human granulocyte colony stimulating factor polypeptide by substitution of at least one amino acid by a different amino acid and/or deletion of at least one amino acid, recombinant plasmids containing a DNA fragment insert coding for any of these hG-CSF polypeptide derivatives, microorganisms carrying one of such plasmids, methods of producing the hG-CSF polypeptide derivatives using the microorganisms, a monoclonal antibody binding to the hG-CSF polypeptide derivative, and chemically modified hG-CSF or derivatives thereof are disclosed.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: November 30, 1999
    Assignee: Kyowa Hakko Co., Ltd
    Inventors: Tetsuro Kuga, Hiromasa Miyaji, Moriyuki Sato, Masami Okabe, Makoto Morimoto, Seiga Itoh, Motoo Yamasaki, Yoshiharu Yokoo, Kazuo Yamaguchi, Hajime Yoshida, Yoshinori Komatsu
  • Patent number: 5936078
    Abstract: The present invention relates to a DNA selected from DNAs, each having the nucleotide sequence of one of Sequence Nos. 1 to 17, complementary to the RNA strand of mRNA with the varied expression level in patients with Alzheimer's disease, compared with the expression level of the mRNA in normal human brain or a DNA hybridizable with the above-mentioned DNA wherein one or more nucleotides in said DNA are deleted or substituted with other nucleotides or one or more nucleotides are added to said DNA, a polypeptide encoded by the DNA, an antibody recognizing the polypeptide, and the diagnosis, therapeutic treatment and research works of patients with Alzheimer's disease, using the DNA, the polypeptide and the antibody.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: August 10, 1999
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tetsuro Kuga, Satoshi Nakagawa, Yoshiyuki Sakaki, Nanding Zhao, Hideji Hashida
  • Patent number: 5795968
    Abstract: Novel hG-CSF polypeptide derivatives having an amino acid sequence derived from the amino acid sequence of the human granulocyte colony stimulating factor polypeptide by substitution of at least one amino acid by a different amino acid and/or deletion of at least one amino acid, recombinant plasmids containing a DNA fragment insert coding for any of these hG-CSF polypeptide derivatives, microorganisms carrying one of such plasmids, methods of producing the hG-CSF polypeptide derivatives using the microorganisms, a monoclonal antibody binding to the hG-CSF polypeptide derivative, and chemically modified hG-CSF or derivatives thereof are disclosed.
    Type: Grant
    Filed: January 10, 1997
    Date of Patent: August 18, 1998
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tetsuro Kuga, Hiromasa Miyaji, Moriyuki Sato, Masami Okabe, Makoto Morimoto, Seiga Itoh, Motoo Yamasaki, Yoshiharu Yokoo, Kazuo Yamaguchi, Hajime Yoshida, Yoshinori Komatsu
  • Patent number: 5714581
    Abstract: Novel hG-CSF polypeptide derivatives having an amino acid sequence derived from the amino acid sequence of the human granulocyte colony stimulating factor polypeptide by substitution of at least one amino acid by a different amino acid and/or deletion of at least one amino acid, recombinant plasmids containing a DNA fragment insert coding for any of these hG-CSF polypeptide derivatives, microorganisms carrying one of such plasmids, methods of producing the hG-CSF polypeptide derivatives using the microorganisms, a monoclonal antibody binding to the hG-CSF polypeptide derivative, and chemically modified hG-CSF or derivatives thereof are disclosed.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: February 3, 1998
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tetsuro Kuga, Hiromasa Miyaji, Moriyuki Sato, Masami Okabe, Makoto Morimoto, Seiga Itoh, Motoo Yamasaki, Yoshiharu Yokoo, Kazuo Yamaguchi, Hajime Yoshida, Yoshinori Komatsu
  • Patent number: 5681720
    Abstract: Novel hG-CSF polypeptide derivatives having an amino acid sequence derived from the amino acid sequence of the human granulocyte colony stimulating factor polypeptide by substitution of at least one amino acid by a different amino acid and/or deletion of at least one amino acid, recombinant plasmids containing a DNA fragment insert coding for any of these hG-CSF polypeptide derivatives, microorganisms carrying one of such plasmids, methods of producing the hG-CSF polypeptide derivatives using the microorganisms, a monoclonal antibody binding to the hG-CSF polypeptide derivative, and chemically modified hG-CSF or derivatives thereof are disclosed.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: October 28, 1997
    Assignee: Kyowa Hakko Co., Ltd.
    Inventors: Tetsuro Kuga, Hiromasa Miyaji, Moriyuki Sato, Masami Okabe, Makoto Morimoto, Seiga Itoh, Motoo Yamasaki, Yoshiharu Yokoo, Kazuo Yamaguchi, Hajime Yoshida, Yoshinori Komatsu
  • Patent number: 5362853
    Abstract: Novel hG-CSF polypeptide derivatives having an amino acid sequence derived from the amino acid sequence of the human granulocyte colony stimulating factor polypeptide by substitution of at least one amino acid by a different amino acid and/or deletion of at least one amino acid, recombinant plasmids containing a DNA fragment insert coding for any of these hG-CSF polypeptide derivatives, microorganisms carrying one of such plasmids, methods of producing the hG-CSF polypeptide derivatives using the microorganisms, a monoclonal antibody binding to the hG-CSF polypeptide derivative, and chemically modified hG-CSF or derivatives thereof are disclosed.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: November 8, 1994
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tetsuro Kuga, Hiromasa Miyaji, Moriyuki Sato, Masami Okabe, Makoto Morimoto, Seiga Itoh, Motoo Yamasaki, Yoshiharu Yokoo, Kazuo Yamaguchi, Yoshinori Komatsu
  • Patent number: 5214132
    Abstract: Novel hG-CSF polypeptide derivatives having an amino acid sequence derived from the amino acid sequence of the human granulocyte colony stimulating factor polypeptide by substitution of at least one amino acid by a different amino acid and/or deletion of at least one amino acid, recombinant plasmids containing a DNA fragment insert coding for any of these hG-CSF polypeptide derivatives, microorganisms carrying one of such plasmids, methods of producing the hG-CSF polypeptide derivatives using the microorganisms, a monoclonal antibody binding to the hG-CSF polypeptide derivative, and chemically modified hG-CSF or derivatives thereof are disclosed.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: May 25, 1993
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tetsuro Kuga, Hiromasa Miyaji, Moriyuki Sato, Masami Okabe, Makoto Morimoto, Seiga Itoh, Motoo Yamasaki, Yoshiharu Yokoo, Kazuo Yamaguchi, Hajime Yoshida, Yoshinori Komatsu
  • Patent number: 5082776
    Abstract: The present invention provides a hybrid antigen polypeptide having both antigenicity of the ATLA encoded by gag gene and that of the ATLA encoded by env gene. The hybrid antigen can be produced in a large amount and it is applicable to serum diagnosis of patients infected with antigen polypeptides such as ATLV.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: January 21, 1992
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tetsuro Kuga, Susumu Sekine, Seiga Itoh
  • Patent number: 4939094
    Abstract: The present invention provides a hybrid antigen polypeptide having both antigenicity of the ATLA encoded by gag gene and that of the ATLA encoded by env gene. The hybrid antigen can be produced in a large amount and it is applicable to serum diagnosis of patients infected with antigen polypeptides such as ATLV.
    Type: Grant
    Filed: August 15, 1986
    Date of Patent: July 3, 1990
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tetsuro Kuga, Susumu Sekine, Seiga Itoh
  • Patent number: 4495283
    Abstract: L-histidine is produced by culturing, in a nutrient medium, an L-histidine producing mutant microorganism belonging to the genus Corynebacterium or Brevibacterium. The mutant is resistant to growth inhibition by an RNA polymerase inhibitor or requires adenine. L-histidine is accumulated in the culture liquor and is recovered therefrom.
    Type: Grant
    Filed: April 7, 1983
    Date of Patent: January 22, 1985
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Kazumi Araki, Tetsuro Kuga