Patents by Inventor Mitsuo Mitomi

Mitsuo Mitomi 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).

  • Sustained release pharmaceutical compositions
    Patent number: 6919372
    Abstract: The present invention relates to sustained-release pharmaceutical compositions for ionic pharmaceutically active substances containing ionic compounds having opposite charges to those of ionic prostanoic acid derivatives and increasing hydrophobicity of the active substances. More specifically, the invention relates to sustained-release pharmaceutical compositions comprising the ionic prostanoic acid derivatives and the ionic compounds having opposite charges to those of the prostanoic acid derivatives and increasing hydrophobicity of these derivatives that contain hydrophobic groups in the molecule thereof. The pharmaceutical composition of the invention can exhibit excellent sustained release effect of the ionic prostanoic acid derivatives, irrespective of water solubility possessed by the ionic prostanoic acid derivatives.
    Type: Grant
    Filed: December 25, 1998
    Date of Patent: July 19, 2005
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Noboru Yamashita, Akira Takagi, Masataka Katsuma, Katsumi Saito, Yuuki Takaishi, Tatsuo Yasuda, Yutaka Takahashi, Mitsuo Mitomi, Michio Hara
  • Sustained release medicinal compositions
    Patent number: 6328979
    Abstract: The present invention relates to sustained-release pharmaceutical compositions for ionic pharmaceutically active substances (excluding ionic prostanoic acid derivatives) containing ionic compounds having opposite charges to those of the active substances and increasing hydrophobicity of the active substances. More specifically, the invention relates to sustained-release pharmaceutical compositions comprising the ionic pharmaceutically active substances and the ionic compounds having opposite charges to those of the active substances and increasing hydrophobicity of the active substances that contain hydrophobic groups in the molecule thereof. The pharmaceutical composition of the invention can exhibit excellent sustained release effect of the active substance, irrespective of water solubility possessed by the ionic pharmaceutically active substances.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: December 11, 2001
    Assignee: Yamanouchi Pharmaceuticals, Co. Ltd.
    Inventors: Noboru Yamashita, Akira Takagi, Masataka Katsuma, Katsumi Saito, Yuuki Takaishi, Tatsuo Yasuda, Yutaka Takahashi, Mitsuo Mitomi
  • Patch
    Patent number: 4879119
    Abstract: A patch having good transdermal property which utilizes a suppository base e.g. triglyceride of a vegetable saturated fatty acid having 12 to 18 carbon atoms together with a penetration enhancer.
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: November 7, 1989
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Yutaka Konno, Hiroitsu Kawata, Masayoshi Aruga, Takashi Sonobe, Mitsuo Mitomi
  • Plaster structural assembly for iontophoresis
    Patent number: 4842577
    Abstract: A novel plaster structural assembly is provided for iontophoresis wherein th e assembly is comprised of an electrode layer and a medicament-containing layer in which a water supplying layer is disposed between the electrode layer and the medicament-containing layer with a sealing cover disposed on the outside of the electrode layer. A method for using the structural assembly for iontophoresis is also provided.
    Type: Grant
    Filed: October 16, 1987
    Date of Patent: June 27, 1989
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Yutaka Konno, Mitsuo Mitomi, Takashi Sonobe, Shumpei Yamaguchi
  • Patch
    Patent number: 4685911
    Abstract: A patch having good transdermal property which utilizes a suppository base e.g. triglyceride of a vegetable saturated fatty acid having 12 to 18 carbon atoms together with a penetration enhancer.
    Type: Grant
    Filed: February 8, 1985
    Date of Patent: August 11, 1987
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Yutaka Konno, Hiroitsu Kawata, Masayoshi Aruga, Takashi Sonobe, Mitsuo Mitomi
  • Transdermal formulation of nicardipine hydrochloride
    Patent number: 4637930
    Abstract: A formulation is provided for the transdermal administration of nicardipine hydrochloride. The formulation is comprised of nicardipine hydrochloride dissolved or suspended in a mixed liquid composed of an urea and at least one compound selected from the group consisting of propylene glycol, a monohydric alcohol having 2 to 4 carbon atoms, lactic acid, thioglycol, a middle chain fatty acid glyceride and a sorbitan middle chain fatty acid ester compounded with a transdermal formulation base.
    Type: Grant
    Filed: January 31, 1985
    Date of Patent: January 20, 1987
    Assignee: Yamanouchi Pharmaceutical Co, Ltd.
    Inventors: Yutaka Konno, Hiroitsu Kawata, Masayoshi Aruga, Takashi Sonobe, Mitsuo Mitomi