Patents by Inventor Naohiro Yabuta

Naohiro Yabuta 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: 8586039
    Abstract: The invention relates to a modified antibody which contains two or more H chain V regions and two or more L chain V regions of monoclonal antibody and can transduce a signal into cells by crosslinking TPO receptor to thereby exert TPO agonist action. The modified antibody can be used as a TPO signal transduction agonist and, therefore, useful as a remedy for various diseases such as platelet-reduction-related blood diseases, thrombopenia following chemotherapy for cancer or leukemia, etc.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: November 19, 2013
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Masayuki Tsuchiya, Toshihiko Ohtomo, Naohiro Yabuta, Hiroyuki Tsunoda, Tetsuro Orita
  • Publication number: 20130295096
    Abstract: The invention relates to a modified antibody which contains two or more H chain V regions and two or more L chain V regions of monoclonal antibody and can transduce a signal into cells by crosslinking a cell surface molecule(s) to thereby serve as an agonist.
    Type: Application
    Filed: April 3, 2013
    Publication date: November 7, 2013
    Inventors: Naoshi Fukushima, Masayuki Tsuchiya, Shinsuke Uno, Toshihiko Ohtomo, Naohiro Yabuta, Hiroyuki Tsunoda
  • Publication number: 20120015436
    Abstract: The invention relates to a modified antibody which contains two or more H chain V regions and two or more L chain V regions of monoclonal antibody and can transduce a signal into cells by crosslinking TPO receptor to thereby exert TPO agonist action. The modified antibody can be used as a TPO signal transduction agonist and, therefore, useful as a remedy for various diseases such as platelet-reduction-related blood diseases, thrombopenia following chemotherapy for cancer or leukemia, etc.
    Type: Application
    Filed: September 6, 2011
    Publication date: January 19, 2012
    Inventors: Masayuki Tsuchiya, Toshihiko Ohtomo, Naohiro Yabuta, Hiroyuki Tsunoda, Tetsuro Orita
  • Patent number: 8067665
    Abstract: A non-human animal that produces human tissue factor (TF) without substantially producing non-human animal tissue factor, said animal having a genome in which cDNA encoding human TF has been inserted upstream of the translation initiation codon for the non-human animal genomic TF gene.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: November 29, 2011
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Kiyoshi Habu, Kou-ichi Jishage, Hideki Adachi, Naohiro Yabuta
  • Patent number: 8034903
    Abstract: The invention relates to a modified antibody which contains two or more H chain V regions and two or more L chain V regions of monoclonal antibody and can transduce a signal into cells by crosslinking TPO receptor to thereby exert TPO agonist action. The modified antibody can be used as a TPO signal transduction agonist and, therefore, useful as a remedy for various diseases such as platelet-reduction-related blood diseases, thrombopenia following chemotherapy for cancer or leukemia, etc.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: October 11, 2011
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Masayuki Tsuchiya, Toshihiko Ohtomo, Naohiro Yabuta, Hiroyuki Tsunoda, Tetsuro Orita
  • Publication number: 20100333220
    Abstract: A non-human animal that produces human tissue factor (TF) without substantially producing non-human animal tissue factor, said animal having a genome in which cDNA encoding human TF has been inserted upstream of the translation initiation codon for the non-human animal genomic TF gene.
    Type: Application
    Filed: August 12, 2009
    Publication date: December 30, 2010
    Inventors: Kiyoshi Habu, Kou-ichi Jishage, Hideki Adachi, Naohiro Yabuta
  • Patent number: 7842790
    Abstract: Disclosed are an antibody against human para-thyroid-hormone-related protein, a DNA coding for the antibody, a recombinant vector containing the DNA, a transformant transformed with the recombinant vector, a method for preparation of the antibody, and uses of the antibody.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: November 30, 2010
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Koh Sato, Yuji Wakahara, Naohiro Yabuta
  • Patent number: 7732133
    Abstract: In the case when there are two objective biological activities, and the aim is to isolate a compound having at least one biological activity, the present inventors developed an assay method wherein a common detection marker is utilized for separately detecting the presence or absence of each of the biological activities. The present inventors discovered that a compound having at least one of two or more distinct biological activities can be efficiently and conveniently detected by simultaneously assaying at least one test sample or more by the above-mentioned method. Furthermore, for a test sample that proved to be positive by the detection method, they found that it is possible to efficiently and conveniently screen for a test sample having an objective specific biological activity by combining with a method wherein an individual activity of a test sample can be detected to specify the biological activity.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: June 8, 2010
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Naohiro Yabuta, Hideki Adachi, Yasushi Shimonaka, Kunihiro Hattori
  • Publication number: 20090311718
    Abstract: The invention relates to a modified antibody which contains two or more H chain V regions and two or more L chain V regions of monoclonal antibody and can transduce a signal into cells by crosslinking a cell surface molecule(s) to thereby serve as an agonist. The modified antibody can be used as a signal transduction agonist and, therefore, useful as a preventive and/or remedy for various diseases such as cancer, inflammation, hormone disorders and blood diseases.
    Type: Application
    Filed: July 2, 2009
    Publication date: December 17, 2009
    Inventors: Naoshi Fukushima, Masayuki Tsuchiya, Shinsuke Uno, Toshihiko Ohtomo, Naohiro Yabuta, Hiroyuki Tsunod
  • Patent number: 7592502
    Abstract: A non-human animal that produces human tissue factor (TF) without substantially producing non-human animal tissue factor, said animal having a genome in which cDNA encoding human TF has been inserted upstream of the translation initiation codon for the non-human animal genomic TF gene.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: September 22, 2009
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Kiyoshi Habu, Kou-ichi Jishage, Hideki Adachi, Naohiro Yabuta
  • Patent number: 7494647
    Abstract: A humanized antibody against tissue factor (TF), comprising: A: a humanized H chain comprising (1) a H chain V region comprising the H chain CDRs of a mouse monoclonal antibody against TF and the H chain FRs of a human antibody, and (2) the H chain C region of a human antibody; and B: a humanized L chain comprising (1) an L chain V region comprising the L chain CDRs of a mouse monoclonal antibody against TF and the L chain FRs of a human antibody, and (2) the L chain C region of a human antibody. After generating a humanized V region by grafting the CDRs of a mouse monoclonal antibody onto a human antibody, a humanized antibody having a higher activity is searched by replacing the FR of the above region with the corresponding FR of the human antibody having a high homology.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: February 24, 2009
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Koh Sato, Hideki Adachi, Naohiro Yabuta
  • Publication number: 20080095772
    Abstract: Disclosed are an antibody against human para-thyroid-hormone-related protein, a DNA coding for the antibody, a recombinant vector containing the DNA, a transformant transformed with the recombinant vector, a method for preparation of the antibody, and uses of the antibody.
    Type: Application
    Filed: October 31, 2007
    Publication date: April 24, 2008
    Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHA
    Inventors: Koh SATO, Yuji Wakahara, Naohiro Yabuta
  • Patent number: 7358355
    Abstract: Disclosed are an antibody against human para-thyroid-hormone-related protein, a DNA coding for the antibody, a recombinant vector containing the DNA, a transformant transformed with the recombinant vector, a method for preparation of the antibody, and uses of the antibody.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: April 15, 2008
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Koh Sato, Yuji Wakahara, Naohiro Yabuta
  • Publication number: 20080009038
    Abstract: Anti-human Mp1 antibodies were isolated and purified, and then single-chain anti-human Mp1 antibodies were prepared using genetic engineering techniques. The antibodies were found to exhibit a high agonistic activity. This shows that the activity of an antibody can be enhanced by making the antibody into a single-chain polypeptide that comprises two or more heavy chain variable regions and two or more light chain variable regions linked via linkers.
    Type: Application
    Filed: December 10, 2004
    Publication date: January 10, 2008
    Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHA
    Inventors: Toshihiko Ohtomo, Naohiro Yabuta, Hiroyuki Tsunoda, Masayuki Tsuchiya
  • Publication number: 20050136057
    Abstract: Disclosed are an antibody against human para-thyroid-hormone-related protein, a DNA coding for the antibody, a recombinant vector containing the DNA, a transformant transformed with the recombinant vector, a method for preparation of the antibody, and uses of the antibody.
    Type: Application
    Filed: February 2, 2005
    Publication date: June 23, 2005
    Inventors: Koh Sato, Yuji Wakahara, Naohiro Yabuta
  • Patent number: 6903194
    Abstract: Disclosed are an antibody against human para-thyroid-hormone-related protein, a DNA coding for the antibody, a recombinant vector containing the DNA, a transformant transformed with the recombinant vector, a method for preparation of the antibody, and uses of the antibody.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: June 7, 2005
    Assignee: Chungai Seiyaku Kabushiki Kaisha
    Inventors: Koh Sato, Yuji Wakahara, Naohiro Yabuta
  • Publication number: 20040242847
    Abstract: The invention relates to a modified antibody which contains two or more H chain V regions and two or more L chain V regions of monoclonal antibody and can transduce a signal into cells by crosslinking a cell surface molecule(s) to thereby serve as an agonist. The modified antibody can be used as a signal transduction agonist and, therefore, useful as a preventive and/or remedy for various diseases such as cancer, inflammation, hormone disorders and blood diseases.
    Type: Application
    Filed: April 18, 2003
    Publication date: December 2, 2004
    Inventors: Naoshi Fukushima, Masayuki Tscuchiya, Shinsuke Uno, Toshihiko Ohtomo, Naohiro Yabuta, Hiroyuki Tsunoda
  • Publication number: 20040091475
    Abstract: The invention relates to a modified antibody which contains two or more H chain V regions and two or more L chain V regions of monoclonal antibody and can transduce a signal into cells by crosslinking TPO receptor to thereby exert TPO agonist action. The modified antibody can be used as a TPO signal transduction agonist and, therefore, useful as a preventive and/or remedy for various diseases such as platelet-reduction-related blood diseases, thrombopenia following chemotherapy for cancer or leukemia, etc.
    Type: Application
    Filed: April 17, 2003
    Publication date: May 13, 2004
    Inventors: Masayuki Tsuchiya, Toshihiko Ohtomo, Naohiro Yabuta, Hiroyuki Tsunoda, Tetsuro Orita
  • Publication number: 20040091876
    Abstract: In the case when there are two objective biological activities, and the aim is to isolate a compound having at least one biological activity, the present inventors developed an assay method wherein a common detection marker is utilized for separately detecting the presence or absence of each of the biological activities. The present inventors discovered that a compound having at least one of two or more distinct biological activities can be efficiently and conveniently detected by simultaneously assaying at least one test sample or more by the above-mentioned method. Furthermore, for a test sample that proved to be positive by the detection method, they found that it is possible to efficiently and conveniently screen for a test sample having an objective specific biological activity by combining with a method wherein an individual activity of a test sample can be detected to specify the biological activity.
    Type: Application
    Filed: September 30, 2003
    Publication date: May 13, 2004
    Inventors: Naohiro Yabuta, Hideki Adachi, Yasushi Shimonaka, Kunihiro Hattori
  • Publication number: 20040044187
    Abstract: A humanized antibody against tissue factor (TF), comprising:
    Type: Application
    Filed: June 16, 2003
    Publication date: March 4, 2004
    Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHA
    Inventors: Koh Sato, Hideki Adachi, Naohiro Yabuta