Patents by Inventor Azuma Nishio

Azuma Nishio 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: 9480746
    Abstract: Provided is a means for stably storing a pharmaceutical composition comprising a compound represented by the General Formula (I) below and/or a salt thereof, and for providing the pharmaceutical composition to the market. A resin container colored with a color having a hue (H) within the range of 7.0Y to 9.99Y or 7.0YR to 9.99YR, value (V) within the range of 1.0 to 6.0, and chroma (C) within the range of 0.5 to 7.5, according to Munsell color coordinates, is filled with a pharmaceutical composition comprising a compound represented by the General Formula (I) and/or a salt thereof, to store the pharmaceutical composition.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: November 1, 2016
    Assignees: POLA PHARMA INC., NIHON NOHYAKU CO., LTD.
    Inventors: Hirokazu Kobayashi, Madoka Ito, Azuma Nishio
  • Publication number: 20150297448
    Abstract: Provided is a means for stably storing a pharmaceutical composition comprising a compound represented by the General Formula (I) below and/or a salt thereof, and for providing the pharmaceutical composition to the market. A resin container colored with a color having a hue (H) within the range of 7.0Y to 9.99Y or 7.0YR to 9.99YR, value (V) within the range of 1.0 to 6.0, and chroma (C) within the range of 0.5 to 7.5, according to Munsell color coordinates, is filled with a pharmaceutical composition comprising a compound represented by the General Formula (I) and/or a salt thereof, to store the pharmaceutical composition.
    Type: Application
    Filed: April 21, 2014
    Publication date: October 22, 2015
    Applicants: POLA PHARMA INC., NIHON NOHYAKU CO., LTD.
    Inventors: Hirokazu KOBAYASHI, Madoka ITO, Azuma NISHIO
  • Patent number: 8541459
    Abstract: To provide a pharmaceutical composition which can enhance the storage stability of 1-(1-hydroxymethyl-2,3-dihydroxypropyloxymethyl)-2-nitroimidazole without impairing the effect of the compound. The pharmaceutical composition includes 1-(1-hydroxymethyl-2,3-dihydroxypropyloxymethyl)-2-nitroimidazole, which is represented by formula (1): and a compound having chelating ability.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: September 24, 2013
    Assignee: Pola Pharma Inc.
    Inventors: Yasushi Murakami, Naoko Kobayashi, Azuma Nishio, Nobuo Kubota
  • Patent number: 8450356
    Abstract: To provide a pharmaceutical composition which can enhance the storage stability of 1-(1-hydroxymethyl-2,3-dihydroxypropyloxymethyl)-2-nitroimidazole without impairing the effect of the compound. The pharmaceutical composition includes 1-(1-hydroxymethyl-2,3-dihydroxypropyloxymethyl)-2-nitroimidazole, which is represented by formula (1): and a compound having chelating ability.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: May 28, 2013
    Assignee: Pola Pharma Inc.
    Inventors: Yasushi Murakami, Naoko Kobayashi, Azuma Nishio, Nobuo Kubota
  • Patent number: 8420687
    Abstract: To provide a pharmaceutical composition which can enhance the storage stability of 1-(1-hydroxymethyl-2,3-dihydroxypropyloxymethyl)-2-nitroimidazole without impairing the effect of the compound. The pharmaceutical composition includes 1-(1-hydroxymethyl-2,3-dihydroxypropyloxymethyl)-2-nitroimidazole, which is represented by formula (1): and a compound having chelating ability.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: April 16, 2013
    Assignee: Pola Pharma Inc.
    Inventors: Yasushi Murakami, Naoko Kobayashi, Azuma Nishio, Nobuo Kubota
  • Patent number: 8258165
    Abstract: To provide a pharmaceutical composition containing a 2-nitroimidazole derivative, which has high solubility in an aqueous carrier and high stability. The pharmaceutical composition is characterized by containing 1-(1-hydroxymethyl-2,3-dihydroxypropyl)oxymethyl-2-nitroimidazole and creatinine, and containing creatinine of 0.001 to 1 part by mass with respect to 1 part by mass of 1-(1-hydroxymethyl-2,3-dihydroxypropyl)oxymethyl-2-nitroimidazole.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: September 4, 2012
    Assignee: Pola Pharma Inc.
    Inventors: Yasushi Murakami, Naoko Kobayashi, Azuma Nishio, Nobuo Kubota
  • Patent number: 8258166
    Abstract: A Cancer radiotherapeutic method using 1-(1-hydroxymethyl-2,3-dihydroxypropyl)oxymethyl-2-nitroimidazole (compound (i), and creatinine in an amount of 0.001 to part by mass with respect to 1 part by mass of compound (1); and irradiation.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: September 4, 2012
    Assignee: Pola Pharma Inc.
    Inventors: Yasushi Murakami, Naoko Kobayashi, Azuma Nishio, Nobuo Kubota
  • Patent number: 8202898
    Abstract: To provide a pharmaceutical composition containing a 2-nitroimidazole derivative, which has high solubility in an aqueous carrier and high stability. The pharmaceutical composition is characterized by containing 1-(1-hydroxymethyl-2,3-dihydroxypropyl)oxymethyl-2-nitroimidazole and creatinine, and containing creatinine of 0.001 to 1 part by mass with respect to 1 part by mass of 1-(1-hydroxymethyl-2,3-dihydroxypropyl)oxymethyl-2-nitroimidazole.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: June 19, 2012
    Assignee: Pola Pharma Inc.
    Inventors: Yasushi Murakami, Naoko Kobayashi, Azuma Nishio, Nobuo Kubota
  • Publication number: 20120136160
    Abstract: To provide a pharmaceutical composition containing a 2-nitroimidazole derivative, which has high solubility in an aqueous carrier and high stability. The pharmaceutical composition is characterized by containing 1-(1-hydroxymethyl-2,3-dihydroxypropyl)oxymethyl-2-nitroimidazole and creatinine, and containing creatinine of 0.001 to 1 part by mass with respect to 1 part by mass of 1-(1-hydroxymethyl-2,3-dihydroxypropyl)oxymethyl-2-nitroimidazole.
    Type: Application
    Filed: February 3, 2012
    Publication date: May 31, 2012
    Applicant: POLA PHARMA INC.
    Inventors: Yasushi Murakami, Naoko Kobayashi, Azuma Nishio, Nobuo Kubota
  • Publication number: 20120136295
    Abstract: To provide a pharmaceutical composition containing a 2-nitroimidazole derivative, which has high solubility in an aqueous carrier and high stability. The pharmaceutical composition is characterized by containing 1-(1-hydroxymethyl-2,3-dihydroxypropyl)oxymethyl-2-nitroimidazole and creatinine, and containing creatinine of 0.001 to 1 part by mass with respect to 1 part by mass of 1-(1-hydroxymethyl-2,3-dihydroxypropyl)oxymethyl-2-nitroimidazole.
    Type: Application
    Filed: February 3, 2012
    Publication date: May 31, 2012
    Applicant: POLA PHARMA INC.
    Inventors: Yasushi MURAKAMI, Naoko Kobayashi, Azuma Nishio, Nobuo Kubota
  • Publication number: 20120129905
    Abstract: To provide a pharmaceutical composition which can enhance the storage stability of 1-(1-hydroxymethyl-2,3-dihydroxypropyloxymethyl)-2-nitroimidazole without impairing the effect of the compound. The pharmaceutical composition includes 1-(1-hydroxymethyl-2,3-dihydroxypropyloxymethyl)-2-nitroimidazole, which is represented by formula (1): and a compound having chelating ability.
    Type: Application
    Filed: January 31, 2012
    Publication date: May 24, 2012
    Applicant: POLA PHARMA INC.
    Inventors: Yasushi MURAKAMI, Naoko Kobayashi, Azuma Nishio, Nobuo Kubota
  • Publication number: 20120130148
    Abstract: To provide a pharmaceutical composition which can enhance the storage stability of 1-(1-hydroxymethyl-2,3-dihydroxypropyloxymethyl)-2-nitroimidazole without impairing the effect of the compound. The pharmaceutical composition includes 1-(1-hydroxymethyl-2,3-dihydroxypropyloxymethyl)-2-nitroimidazole, which is represented by formula (1): and a compound having chelating ability.
    Type: Application
    Filed: January 31, 2012
    Publication date: May 24, 2012
    Applicant: POLA PHARMA INC.
    Inventors: Yasushi Murakami, Naoko Kobayashi, Azuma Nishio, Nobuo Kubota
  • Patent number: 8030338
    Abstract: It is an object to provide a method for producing a 2-nitroimidazole derivative having an acyclic sugar chain in a side chain, which is suitable for production of a derivative having a radioisotope. A method for producing 1-(1-benzoyloxymethyl-2-hydroxyethyl)oxymethyl-2-nitroimidazole, characterized by reacting glycerin with a benzoylating agent to obtain 1-O-benzoylglycerin, reacting 1-O-benzoylglycerin with dimethoxymethane in the presence of a dehydrating agent to obtain 4-benzoyloxymethyl-1,3-dioxolane, and then reacting this product with 2-nitroimidazole or 2-nitro-1-trialkylsilylimidazole in the presence of a Lewis acid.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: October 4, 2011
    Assignee: Pola Pharma Inc.
    Inventor: Azuma Nishio
  • Publication number: 20100130576
    Abstract: To provide a pharmaceutical composition containing a 2-nitroimidazole derivative, which has high solubility in an aqueous carrier and high stability. The pharmaceutical composition is characterized by containing 1-(1-hydroxymethyl-2,3-dihydroxypropyl)oxymethyl-2-nitroimidazole and creatinine, and containing creatinine of 0.001 to 1 part by mass with respect to 1 part by mass of 1-(1-hydroxymethyl-2,3-dihydroxypropyl)oxymethyl-2-nitroimidazole.
    Type: Application
    Filed: April 16, 2008
    Publication date: May 27, 2010
    Applicant: POLA PHARMA INC.
    Inventors: Yasushi Murakami, Naoko Kobayashi, Azuma Nishio, Nobuo Kubota
  • Publication number: 20100076042
    Abstract: To provide a pharmaceutical composition which can enhance the storage stability of 1-(1-hydroxymethyl-2,3-dihydroxypropyloxymethyl)-2-nitroimidazole without impairing the effect of the compound. The pharmaceutical composition includes 1-(1-hydroxymethyl-2,3-dihydroxypropyloxymethyl)-2-nitroimidazole, which is represented by formula (1): and a compound having chelating ability.
    Type: Application
    Filed: January 17, 2008
    Publication date: March 25, 2010
    Applicant: POLA PHARMA INC.
    Inventors: Yasushi Murakami, Naoko Kobayashi, Azuma Nishio, Nobuo Kubota
  • Publication number: 20100004460
    Abstract: It is an object to provide a method for producing a 2-nitroimidazole derivative having an acyclic sugar chain in a side chain, which is suitable for production of a derivative having a radioisotope. A method for producing 1-(1-benzoyloxymethyl-2-hydroxyethyl)oxymethyl-2-nitroimidazole, characterized by reacting glycerin with a benzoylating agent to obtain 1-O-benzoylglycerin, reacting 1-O-benzoylglycerin with dimethoxymethane in the presence of a dehydrating agent to obtain 4-benzoyloxymethyl-1,3-dioxolane, and then reacting this product with 2-nitroimidazole or 2-nitro-1-trialkylsilylimidazole in the presence of a Lewis acid.
    Type: Application
    Filed: January 17, 2008
    Publication date: January 7, 2010
    Applicant: POLA PHARMA INC
    Inventor: Azuma Nishio
  • Patent number: 5532380
    Abstract: High purity 2-nitroimidazole derivatives having excellent radiosensitivity and high safety and useful as a drug to be used along with radiotherapy of various cancers can be prepared at a high yield from inexpensive diester of tartaric acid according to the following reaction formua, ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and each individually represents an aliphatic group or an aromatic group, and X represents a halogen atom.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: July 2, 1996
    Assignee: Pola Chemical Industries, Inc.
    Inventors: Toshimitsu Suzuki, Azuma Nishio