Patents by Inventor Takaaki Masuda

Takaaki Masuda 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: 9085554
    Abstract: Disclosed is a method of evaluating stability of a pharmaceutical preparation containing luliconazole. The method includes measuring an amount of production of an SE form of luliconazole represented by following formula (2), an amount of production of a Z form of luliconazole represented by following formula (3) and an amount of production of an amide form of luliconazole represented by following formula (1) after storage under a severe condition or an accelerated condition, and judging that the stability of the pharmaceutical preparation is high if each of the amount of production of the SE form, the amount of production of the Z form and the amount of production of the amide form is not more than 5% by weight with respect to a compounded amount of luliconazole.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: July 21, 2015
    Assignees: POLA PHARMA INC., NIHON NOHYAKU CO., LTD.
    Inventors: Takaaki Masuda, Hiroshi Yamaguchi
  • Publication number: 20150191456
    Abstract: An object is to establish an index to prepare a stable pharmaceutical formulation by specifying a related substance of luliconazole which appears depending on the type of a selected solvent in the luliconazole pharmaceutical formulation and which is different from the SE form and the Z form. Disclosed is an amide derivative of luliconazole.
    Type: Application
    Filed: February 19, 2013
    Publication date: July 9, 2015
    Inventors: Takaaki Masuda, Hiroshi Yamaguchi
  • Publication number: 20150183766
    Abstract: An object is to provide means for improving the solubility of luliconazole. Disclosed is a crystal of luliconazole wherein the crystal has such a crystal habit that (021) plane is a specific crystal growth plane.
    Type: Application
    Filed: November 2, 2012
    Publication date: July 2, 2015
    Applicants: NIHON NOHYAKU CO., LTD., POLA PHARMA INC.
    Inventor: Takaaki Masuda
  • Patent number: 9068958
    Abstract: An object is to provide means for suppressing the formation of any isomer of luliconazole on account of any influence of, for example, the humidity and the light and improving the stability. Disclosed is a method for differential evaluating a crystal of luliconazole, comprising differential evaluating the crystal by using, as indexes, surface free energy of the crystal of luliconazole and a ratio of a polar component of the surface free energy, wherein the crystal is evaluated to be stable on condition that the surface free energy is smaller and the ratio of the polar component is lower.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: June 30, 2015
    Assignees: POLA PHARMA INC., NIHON NOHYAKU CO., LTD.
    Inventors: Takaaki Masuda, Hideo Kaneda
  • Publication number: 20150177210
    Abstract: An object is to provide means for suppressing the formation of any isomer of luliconazole on account of any influence of, for example, the humidity and the light and improving the stability. Disclosed is a method for differential evaluating a crystal of luliconazole, comprising differential evaluating the crystal by using, as indexes, surface free energy of the crystal of luliconazole and a ratio of a polar component of the surface free energy, wherein the crystal is evaluated to be stable on condition that the surface free energy is smaller and the ratio of the polar component is lower.
    Type: Application
    Filed: April 30, 2013
    Publication date: June 25, 2015
    Inventors: Takaaki Masuda, Hideo Kaneda
  • Publication number: 20150168357
    Abstract: Disclosed is a method of evaluating stability of a pharmaceutical preparation containing luliconazole. The method includes measuring an amount of production of an SE form of luliconazole represented by following formula (2), an amount of production of a Z form of luliconazole represented by following formula (3) and an amount of production of an amide form of luliconazole represented by following formula (1) after storage under a severe condition or an accelerated condition, and judging that the stability of the pharmaceutical preparation is high if each of the amount of production of the SE form, the amount of production of the Z form and the amount of production of the amide form is not more than 5% by weight with respect to a compounded amount of luliconazole.
    Type: Application
    Filed: January 8, 2015
    Publication date: June 18, 2015
    Inventors: Takaaki Masuda, Hiroshi Yamaguchi
  • Patent number: 9012484
    Abstract: An object is to provide means for improving the solubility of luliconazole. Disclosed is a crystal consisting of luliconazole and short chain alcohol having a number of carbon atom or atoms of 1 to 4.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: April 21, 2015
    Assignees: Pola Pharma Inc., Nihon Nohyaku Co., Ltd.
    Inventors: Takaaki Masuda, Makoto Gotoh, Yoshiyuki Miyata
  • Patent number: 8980931
    Abstract: Disclosed is a method of evaluating stability of a pharmaceutical preparation containing luliconazole. The method includes measuring an amount of production of an SE form of luliconazole represented by following formula (2), an amount of production of a Z form of luliconazole represented by following formula (3) and an amount of production of an amide form of luliconazole represented by following formula (1) after storage under a severe condition or an accelerated condition, and judging that the stability of the pharmaceutical preparation is high if each of the amount of production of the SE form, the amount of production of the Z form and the amount of production of the amide form is not more than 5% by weight with respect to a compounded amount of luliconazole.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: March 17, 2015
    Assignees: Pola Pharma Inc., Nihon Nohyaku Co., Ltd.
    Inventors: Takaaki Masuda, Hiroshi Yamaguchi
  • Publication number: 20150073028
    Abstract: Disclosed is a pharmaceutical composition for antifungal use, comprising: 1) one or more compounds selected from compounds represented by the general formula (1) below and physiologically acceptable salts thereof; 2) one or more compounds selected from polypropylene glycol, diesters of dibasic acids, triacetin, 2-ethyl-1,3-hexanediol, lauromacrogol, and polyoxyethylene-polyoxypropylene glycol; and 3) one or more compounds selected from glucono-?-lactone, propylene glycol, glycerin, and lactic acid. General formula (1) (In the formula, X represents a halogen or hydrogen). wherein X represents a halogen or hydrogen.
    Type: Application
    Filed: November 12, 2014
    Publication date: March 12, 2015
    Inventors: Takaaki Masuda, Naoto Nishida, Naoko Kobayashi, Hideaki Sasagawa
  • Patent number: 8962669
    Abstract: An object is to provide a medicament preparation which is excellent in the solubilization stability in relation to a compound represented by the general formula (1) during the storage in a low temperature region and a high temperature region. The present invention resides in a pharmaceutical composition comprising 1) the compound represented by the general formula (1) and/or a salt thereof and 2) a polyhydric alcohol derivative. General formula (1) (In the formula, R1, R2 independently represent hydrogen atom or halogen atom respectively, and at least one of R1, R2 is halogen atom.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: February 24, 2015
    Assignees: Pola Pharma Inc., Nihon Nohyaku Co., Ltd.
    Inventors: Nobuo Kubota, Hirokazu Kobayashi, Takaaki Masuda
  • Publication number: 20140080882
    Abstract: An object is to provide means for improving the solubility of luliconazole. Disclosed is a crystal consisting of luliconazole and short chain alcohol having a number of carbon atom or atoms of 1 to 4.
    Type: Application
    Filed: September 6, 2013
    Publication date: March 20, 2014
    Applicants: Nihon Nohyaku Co., Ltd., Pola Pharma Inc.
    Inventors: Takaaki Masuda, Makoto Gotoh, Yoshiyuki Miyata
  • Patent number: 8513296
    Abstract: Disclosed is an antifungal agent for external use, which is characterized by containing a compound represented by the general formula (1) below, 50-95% by mass of an alcohol, and 0.1-35% by mass of water and/or an anionic surfactant.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: August 20, 2013
    Assignees: Pola Pharma Inc., Nihon Nohyaku Co., Ltd.
    Inventors: Takaaki Masuda, Naoko Kobayashi, Hideaki Sasagawa
  • Publication number: 20130090365
    Abstract: An object is to provide a medicament preparation which is excellent in the solubilization stability in relation to a compound represented by the general formula (1) during the storage in a low temperature region and a high temperature region. The present invention resides in a pharmaceutical composition comprising 1) the compound represented by the general formula (1) and/or a salt thereof and 2) a polyhydric alcohol derivative. General formula (1) (In the formula, R1, R2 independently represent hydrogen atom or halogen atom respectively, and at least one of R1, R2 is halogen atom.
    Type: Application
    Filed: June 10, 2011
    Publication date: April 11, 2013
    Applicants: NIHON NOHYAKU CO., LTD., POLA PHARMA INC.
    Inventors: Nobuo Kubota, Hirokazu Kobayashi, Takaaki Masuda
  • Publication number: 20120329845
    Abstract: Disclosed is an antifungal agent for external use, which is characterized by containing a compound represented by the general formula (1) below, 50-95% by mass of an alcohol, and 0.1-35% by mass of water and/or an anionic surfactant.
    Type: Application
    Filed: September 4, 2012
    Publication date: December 27, 2012
    Applicants: Nihon Nohyaku Co., Ltd., Pola Pharma Inc.
    Inventors: Takaaki Masuda, Naoko Kobayashi, Hideaki Sasagawa
  • Publication number: 20100204293
    Abstract: Disclosed is an antifungal agent for external use, which is characterized by containing a compound represented by the general formula (1) below, 50-95% by mass of an alcohol, and 0.1-35% by mass of water and/or an anionic surfactant.
    Type: Application
    Filed: September 5, 2008
    Publication date: August 12, 2010
    Applicants: Pola Pharma Inc., Nihon Nohyaku Co., Ltd.
    Inventors: Takaaki Masuda, Naoko Kobayashi, Hideaki Sasagawa
  • Publication number: 20100173965
    Abstract: Disclosed is a pharmaceutical composition for antifungal use, comprising: 1) one or more compounds selected from compounds represented by the general formula (1) below and physiologically acceptable salts thereof; 2) one or more compounds selected from polypropylene glycol, diesters of dibasic acids, triacetin, 2-ethyl-1,3-hexanediol, lauromacrogol, and polyoxyethylene-polyoxypropylene glycol; and 3) one or more compounds selected from glucono-?-lactone, propylene glycol, glycerin, and lactic acid. General formula (1) (In the formula, X represents a halogen or hydrogen). wherein X represents a halogen or hydrogen.
    Type: Application
    Filed: September 5, 2008
    Publication date: July 8, 2010
    Applicants: Pola Pharma Inc., Nihon Nohyaku Co., Ltd.
    Inventors: Takaaki Masuda, Naoto Nishida, Naoko Kobayashi, Hideaki Sasagawa
  • Publication number: 20100168200
    Abstract: Disclosed is an antifungal agent for external use, which is characterized by containing a compound represented by the general formula (1), 50 to 95 mass % of an alcohol such as ethanol, 0.1 to 35 mass % of water or the like, and 0.01 to 5 mass % of a cellulose thickening agent. X is a halogen or H.
    Type: Application
    Filed: September 5, 2008
    Publication date: July 1, 2010
    Applicants: Pola Pharma Inc., Nihon Nohyaku Co., Ltd
    Inventors: Takaaki Masuda, Naoto Nishida, Naoko Kobayashi, Hideaki Sasagawa
  • Patent number: 5906998
    Abstract: In the decomposition of a polymer containing a urethane linkage and/or urea linkage in the presence of a decomposing agent, the amount of evolved carbon dioxide is measured and the decomposition reaction is conducted until a total amount of evolved carbon dioxide reaches a specified value to obtain a liquid decomposition product. According to the present invention, a decomposition product having constant quality can be obtained in a simple manner.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: May 25, 1999
    Assignees: Sumitomo Bayer Urethane Co., Inc., Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuji Hoshino, Takaaki Masuda, Hiroshi Ikuta, Hisao Mitobe