Patents by Inventor Shigeru Itai

Shigeru Itai 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: 11234984
    Abstract: The present invention relates to a solid dispersion containing a compound represented by General Formula (I): wherein R1 is an unsubstituted phenyl group or a phenyl group substituted with a substituent; the substituent is an alkyl group having 1 to 8 carbon atoms, an alkyl group having 1 to 8 carbon atoms substituted with a halogen atom, an alkoxy group having 1 to 8 carbon atoms, an alkoxycarbonyl group having 2 to 8 carbon atoms, a formyl group, a carboxyl group, a halogen atom, a phenyl group or a phenoxy group; R2 is a cyano group or a nitro group; R3 is a hydroxyl group; X is an oxygen atom or —S(O)n—; n is an integer of 0 to 2; Y is an oxygen atom or a sulfur atom, or a pharmaceutically acceptable salt thereof and a hypromellose derivative.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: February 1, 2022
    Assignees: Shizuoka Prefectural University Corporation, Nippon Chemiphar Co., Ltd.
    Inventors: Shigeru Itai, Shuji Noguchi, Yasunori Iwao, Masuharu Hirano, Takashi Ohta, Tomio Yamakawa
  • Publication number: 20200306251
    Abstract: The present invention relates to a solid dispersion containing a compound represented by General Formula (1): wherein R1 is an unsubstituted phenyl group or a phenyl group substituted with a substituent; the substituent is an alkyl group having 1 to 8 carbon atoms, an alkyl group having 1 to 8 carbon atoms substituted with a halogen atom, an alkoxy group having 1 to 8 carbon atoms, an alkoxycarbonyl group having 2 to 8 carbon atoms, a formyl group, a carboxyl group, a halogen atom, a phenyl group or a phenoxy group; R2 is a cyano group or a nitro group; R3 is a hydroxyl group; X is an oxygen atom or —S(O)n—; n is an integer of 0 to 2; Y is an oxygen atom or a sulfur atom, or a pharmaceutically acceptable salt thereof and a hypromellose derivative.
    Type: Application
    Filed: November 28, 2018
    Publication date: October 1, 2020
    Inventors: Shigeru Itai, Shuji Noguchi, Yasunori Iwao, Masuharu Hirano, Takashi Ohta, Tomio Yamakawa
  • Patent number: 8231899
    Abstract: The present invention relates to an oral modified release pharmaceutical composition for the administration of a therapeutically and/or prophylactically effective amount of an active substance (a drug substance) to obtain a relatively fast or quick onset of the therapeutic and/or prophylactic effect. The drug substances contained in a modified release pharmaceutical composition according to the invention are suitably a drug substance which has a very low solubitity under acidic conditions, i.e. under conditions similar to those present in the stomach and/or drug substances which have a pKa value below about 5.5 such as in a range of from about 4 to about 5.
    Type: Grant
    Filed: January 13, 2004
    Date of Patent: July 31, 2012
    Assignee: Nycomed Danmark ApS
    Inventors: Poul Egon Bertelsen, Niels Gjørløv Hansen, Hermann Ruckendorfer, Shigeru Itai
  • Publication number: 20050147668
    Abstract: The present invention relates to an oral modified release pharmaceutical composition for the administration of a therapeutically and/or prophylactically effective amount of an active substance (a drug substance) to obtain a relatively fast or quick onset of the therapeutic and/or prophylactic effect The drug substances contained in a modified release pharmaceutical composition according to the invention are suitably a drug substance which has a very low solubitity under acidic conditions, i.e. under conditions similar to those present in the stomach and/or drug substances which have a pKa value below about 5.5 such as in a range of from about 4 to about 5.
    Type: Application
    Filed: January 13, 2004
    Publication date: July 7, 2005
    Inventors: Poul Bertelsen, Niels Hansen, Hermann Ruckendorfer, Shigeru Itai
  • Patent number: 6713089
    Abstract: The present invention relates to an oral modified release pharmaceutical composition for the administration of a therapeutically and/or prophylactically effective amount of an active substance (a drug substance), to obtain a relatively fast or quick onset of the therapeutic and/or prophylactic effect. The drug substances contained in a modified release pharmaceutical composition according to the invention are suitably a drug substance which has a pKa value below about 5, such as in a range of from about 4 to about 5.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: March 30, 2004
    Assignee: Nycomed Danmark A/S
    Inventors: Poul Bertelsen, Niels Gjørløv Hansen, Hermann Ruckendorfer, Shigeru Itai
  • Patent number: 5972373
    Abstract: [Object] To provide a composition for oral administration which is excellent in masking a taste of an unpleasant tasting drug and in bioavailability.[Constitution] A composition for oral administration comprising an unpleasantly tasting drug, a high polymer soluble in the stomach and a monoglyceride in the .beta.-crystal form.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: October 26, 1999
    Assignee: Taisho Pharmaceutical Co., Ltd.
    Inventors: Toshio Yajima, Kuniaki Ishii, Shigeru Itai, Masami Nemoto, Kouji Suetake, Nobuyoshi Tsukui
  • Patent number: 5707646
    Abstract: A composition for oral preparations, having a complex formed by dispersing or dissolving an unpleasantly tasting basic drug and a functional polymer compound in a substance having a low melting point, 10 to 70% by weight, based on the composition, of sugar alcohol and 0.1 to 7% by weight, based on the composition, of basic oxide. The composition for oral preparation is excellent in masking unpleasantly tasting basic drugs and has excellent performance in biological use.
    Type: Grant
    Filed: September 9, 1994
    Date of Patent: January 13, 1998
    Assignee: Taisho Pharmaceutical Co., Ltd.
    Inventors: Toshio Yajima, Kuniaki Ishii, Nobuo Umeki, Shigeru Itai, Hidefumi Hayashi, Kimihide Shimano, Ikuo Koyama
  • Patent number: 5328903
    Abstract: A composition for solid pharmaceutical preparations containing a vitamin D.sub.3 derivative capable of permitting the derivative to be uniformly distributed in the composition while being stabilized. The composition contains an excipient consisting of mannitol and sugar, a degradative agent consisting of hydroxypropyl cellulose, and a binder consisting of polyvinyl pyrrolidone and hydroxypropylmethyl cellulose.
    Type: Grant
    Filed: February 10, 1993
    Date of Patent: July 12, 1994
    Assignees: Taisho Pharmaceutical Co. Ltd., Sumitomo Pharmaceuticals Co. Ltd., Wisconsin Alumni Research Foundation
    Inventors: Kuniaki Ishii, Yumiko Toriumi, Shigeru Itai, Hidefumi Hayashi, Masami Nemoto