Patents by Inventor Takahiro Kitamura

Takahiro Kitamura 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).

  • Publication number: 20080119474
    Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (substituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.
    Type: Application
    Filed: January 14, 2008
    Publication date: May 22, 2008
    Applicant: Kowa Co., Ltd.
    Inventors: Masao Ohkuchi, Yoshinori Kyotani, Hiromichi Shigyo, Tomoyuki Koshi, Takahiro Kitamura, Tadaaki Ohgiya, Takayuki Matsuda, Yukiyoshi Yamazaki, Natsuyo Kumai, Kyoko Kotaki, Hideo Yoshizaki, Yuriko Habata
  • Publication number: 20080095916
    Abstract: A method of processing wheat flour that without detriment to secondary processability, improves the flavor and palate feelings thereof, processed wheat flour obtained by the processing method; and fool utilizing the processed wheat flour. The method is characterized in that 10 to 55 pts.wt. of ethyl alcohol is homogeneously dispersed in 100 pts.wt. of wheat flour under such conditions that the total water content is ?20 wt. %, followed by evaporation of ethyl alcohol therefrom at ?50° C.
    Type: Application
    Filed: May 6, 2005
    Publication date: April 24, 2008
    Applicant: Lotte Co., Ltd.
    Inventors: Masanori Ito, Kazuhiro Sano, Takahiro Kitamura, Koji Murakami, Toshiyuki Koyama
  • Publication number: 20070208025
    Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (substituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.
    Type: Application
    Filed: April 30, 2007
    Publication date: September 6, 2007
    Applicant: Kowa Co., Ltd.
    Inventors: Masao Ohkuchi, Yoshinori Kyotani, Hiromichi Shigyo, Tomoyuki Koshi, Takahiro Kitamura, Tadaaki Ohgiya, Takayuki Matsuda, Yukiyoshi Yamazaki, Natsuyo Kumai, Kyoko Kotaki, Hideo Yoshizaki, Yuriko Habata
  • Patent number: 7211577
    Abstract: A phenylpyridazine derivative represented by the formula (1): Wherein, R1, R2, R3, X, Y, Z and n have the same meaning as defined in the specification; or a salt thereof, or a medicine containing the compound. The present invention provides water-soluble phenylpyridazine derivatives and medicines containing them, which have excellent inhibitory activity against interleukin-? production, high water solubility and high oral absorbability.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: May 1, 2007
    Assignee: Kowa Co., Ltd.
    Inventors: Yoshinori Kyotani, Tomoyuki Koshi, Hiromichi Shigyo, Hideo Yoshizaki, Takahiro Kitamura, Shunji Takemura, Kyoko Yasuoka, Junko Totsuka, Seiichi Sato
  • Publication number: 20070049595
    Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (subsituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.
    Type: Application
    Filed: November 1, 2006
    Publication date: March 1, 2007
    Applicant: Kowa Co., Ltd.
    Inventors: Masao Ohkuchi, Yoshinori Kyotani, Hiromichi Shigyo, Tomoyuki Koshi, Takahiro Kitamura, Tadaaki Ohgiya, Takayuki Matsuda, Yukiyoshi Yamazaki, Natsuyo Kumai, Kyoko Kotaki, Hideo Yoshizaki, Yuriko Habata
  • Patent number: 7109242
    Abstract: A compound represented by the following general formula (1), a salt thereof, or an ester thereof: wherein m represents an integer of 0 to 4, n represents an integer of 5 to 9, and R represents hydrogen atom or a protective group of hydroxyl group, which has reducing actions of blood glucose, plasma insulin, and triglyceride, and is useful for preventive and/or therapeutic treatment of diabetes, complications of diabetes, hyperlipemia and others.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: September 19, 2006
    Assignee: Kowa Company, Ltd.
    Inventors: Keisuke Inoue, Tsutomu Toma, Takahiro Kitamura, Yukiyoshi Yamazaki, Tetsuya Ishikawa
  • Patent number: 7087606
    Abstract: Compounds having the formula (1): wherein R1 represents an alkyl or alkenyl group, R2 and R3 each independently represent a hydrogen atom or an alkyl, hydroxyalkyl, dihydroxyalkyl or alkynyl group, or R2 and R3 may be fused together with the adjacent nitrogen atom to form a substituted or unsubstituted, nitrogen-containing, saturated heterocyclic group, X, Y and Z each independently represent a hydrogen atom, an alkyl group, a halogen atom or the like, and n stands for an integer of from 1 to 5; and also to medicinal compositions containing them. These compounds have inhibitory activity against IL-1? production, high water solubility and good oral absorbability.
    Type: Grant
    Filed: October 12, 2004
    Date of Patent: August 8, 2006
    Assignee: Kowa Co., Ltd.
    Inventors: Yoshinori Kyotani, Tomoyuki Koshi, Hiromichi Shigyo, Hideo Yoshizaki, Takahiro Kitamura, Shunji Takemura, Kyoko Yasuoka, Junko Totsuka, Seiichi Sato
  • Publication number: 20060160804
    Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (subsituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.
    Type: Application
    Filed: March 22, 2006
    Publication date: July 20, 2006
    Applicant: Kowa Co., Ltd.
    Inventors: Masao Ohkuchi, Yoshinori Kyotani, Hiromichi Shigyo, Tomoyuki Koshi, Takahiro Kitamura, Tadaaki Ohgiya, Takayuki Matsuda, Yukiyoshi Yamazaki, Natsuyo Kumai, Kyoko Kotaki, Hideo Yoshizaki, Yuriko Habata
  • Publication number: 20060142292
    Abstract: A phenylpyridazine derivative represented by the formula (1): Wherein, R1, R2, R3, X, Y, Z and n have the same meaning as defined in the specification; or a salt thereof, or a medicine containing the compound. The present invention provides water-soluble phenylpyridazine derivatives and medicines containing them, which have excellent inhibitory activity against interleukin-? production, high water solubility and high oral absorbability.
    Type: Application
    Filed: March 16, 2004
    Publication date: June 29, 2006
    Applicant: Kowa Co., Ltd.
    Inventors: Yoshinori Kyotani, Tomoyuki Koshi, Hiromichi Shigyo, Hideo Yoshizaki, Takahiro Kitamura, Shunji Takemura, Kyoko Yasuoka, Junko Totsuka, Seiichi Sato
  • Publication number: 20050267113
    Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (subsituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.
    Type: Application
    Filed: August 15, 2005
    Publication date: December 1, 2005
    Applicant: Kowa Co., Ltd.
    Inventors: Masao Ohkuchi, Yoshinori Kyotani, Hiromichi Shigyo, Tomoyuki Koshi, Takahiro Kitamura, Tadaaki Ohgiya, Takayuki Matsuda, Yukiyoshi Yamazaki, Natsuyo Kumai, Kyoko Kotaki, Hideo Yoshizaki, Yuriko Habata
  • Publication number: 20050131001
    Abstract: The present invention provides to a novel compound having an ACAT inhibiting activity.
    Type: Application
    Filed: November 9, 2004
    Publication date: June 16, 2005
    Inventors: Kimiyuki Shibuya, Toru Miura, Katsumi Kawamine, Yukihiro Sato, Tadaaki Ohgiya, Takahiro Kitamura, Chiyoka Ozaki, Toshiyuki Edano, Mitsuteru Kirata
  • Publication number: 20050131002
    Abstract: The present invention provides to a novel compound having an ACAT inhibiting activity.
    Type: Application
    Filed: November 9, 2004
    Publication date: June 16, 2005
    Inventors: Kimiyuki Shibuya, Toru Miura, Katsumi Kawamine, Yukihiro Sato, Tadaaki Ohgiya, Takahiro Kitamura, Chiyoka Ozaki, Toshiyuki Edano, Mitsuteru Hirata
  • Publication number: 20050085480
    Abstract: Compounds having the formula (1): wherein R1 represents an alkyl or alkenyl group, R2 and R3 each independently represent a hydrogen atom or an alkyl, hydroxyalkyl, dihydroxyalkyl or alkynyl group, or R2 and R3 may be fused together with the adjacent nitrogen atom to form a substituted or unsubstituted, nitrogen-containing, saturated heterocyclic group, X, Y and Z each independently represent a hydrogen atom, an alkyl group, a halogen atom or the like, and n stands for an integer of from 1 to 5; and also to medicinal compositions containing them. These compounds have inhibitory activity against IL-1? production, high water solubility and good oral absorbability.
    Type: Application
    Filed: October 12, 2004
    Publication date: April 21, 2005
    Applicant: KOWA CO., LTD.
    Inventors: Yoshinori Kyotani, Tomoyuki Koshi, Hiromichi Shigyo, Hideo Yoshizaki, Takahiro Kitamura, Shunji Takemura, Kyoko Yasuoka, Junko Totsuka, Seiichi Sato
  • Publication number: 20050065155
    Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (subsituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.
    Type: Application
    Filed: November 12, 2004
    Publication date: March 24, 2005
    Applicant: KOWA CO., LTD.
    Inventors: Masao Ohkuchi, Yoshinori Kyotani, Hiromichi Shigyo, Tomoyuki Koshi, Takahiro Kitamura, Tadaaki Ohgiya, Takayuki Matsuda, Yukiyoshi Yamazaki, Natsuyo Kumai, Kyoko Kotaki, Hideo Yoshizaki, Yuriko Habata
  • Patent number: 6869954
    Abstract: Compounds having the formula (1): wherein R1 represents an alkyl or alkenyl group, R2 and R3 each independently represent a hydrogen atom or an alkyl, hydroxyalkyl, dihydroxyalkyl or alkynyl group, or R2 and R3 may be fused together with the adjacent nitrogen atom to form a substituted or unsubstituted, nitrogen-containing, saturated heterocyclic group, X, Y and Z each independently represent a hydrogen atom, an alkyl group, a halogen atom or the like, and n stands for an integer of from 1 to 5; and also to medicinal compositions containing them. These compounds have inhibitory activity against IL-1? production, high water solubility and good oral absorbability.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: March 22, 2005
    Assignee: Kowa Co., Ltd.
    Inventors: Yoshinori Kyotani, Tomoyuki Koshi, Hiromichi Shigyo, Hideo Yoshizaki, Takahiro Kitamura, Shunji Takemura, Kyoko Yasuoka, Junko Totsuka, Seiichi Sato
  • Patent number: 6861428
    Abstract: Compounds having the formula (1): wherein R1 represents an alkyl or alkenyl group, R2 and R3 each independently represents a hydrogen atom or an alkyl, hydroxyalkyl, dihydroxyalkyl or alkynyl group, or R2 and R3 may be fused together with the adjacent nitrogen atom to form a substituted or unsubstituted, nitrogen-containing, saturated heterocyclic group, X, Y and Z each independently represents a hydrogen atom, an alkyl group, a halogen atom or the like, and n stands for an integer of from 1 to 5; and also to pharmaceutical compositions containing them. These compounds have inhibitory activity against IL-1? production, high water solubility and good oral absorbability.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: March 1, 2005
    Assignee: Kowa Co., Ltd.
    Inventors: Yoshinori Kyotani, Tomoyuki Koshi, Hiromichi Shigyo, Hideo Yoshizaki, Takahiro Kitamura, Shunji Takemura, Kyoko Yasuoka, Junko Totsuka, Seiichi Sato
  • Patent number: 6849647
    Abstract: The present invention provides to a novel compound having an ACAT inhibiting activity.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: February 1, 2005
    Assignee: Kowa Company, Ltd.
    Inventors: Kimiyuki Shibuya, Toru Miura, Katsumi Kawamine, Yukihiro Sato, Tadaaki Ohgiya, Takahiro Kitamura, Chiyoka Ozaki, Toshiyuki Edano, Mitsuteru Hirata
  • Publication number: 20050009909
    Abstract: A compound represented by the following general formula (1), a salt thereof, or an ester thereof: wherein m represents an integer of 0 to 4, n represents an integer of 5 to 9, and R represents hydrogen atom or a protective group of hydroxyl group, which has reducing actions of blood glucose, plasma insulin, and triglyceride, and is useful for preventive and/or therapeutic treatment of diabetes, complications of diabetes, hyperlipemia and others.
    Type: Application
    Filed: May 21, 2004
    Publication date: January 13, 2005
    Applicant: KOWA Company, Ltd.
    Inventors: Keisuke Inoue, Tsutomu Toma, Takahiro Kitamura, Yukiyoshi Yamazaki, Tetsuya Ishikawa
  • Publication number: 20040147516
    Abstract: This invention relates to pyridazine derivatives represented by the formula (1): 1
    Type: Application
    Filed: January 15, 2004
    Publication date: July 29, 2004
    Applicant: Kowa Co., Ltd.
    Inventors: Masao Ohkuchi, Yoshinori Kyotani, Hiromichi Shigyo, Tomoyuki Koshi, Takahiro Kitamura, Tadaaki Ohgiya, Takayuki Matsuda, Yukiyoshi Yamazaki, Natsuyo Kumai, Kyoko Kotaki, Hideo Yoshizaki, Yuriko Habata
  • Patent number: 6680316
    Abstract: Objects of the invention are to provide compounds having excellent activity against interleukin-1&bgr; production and also medicines comprising them as effective ingredients. Pyridazin-3-one derivatives represented by the following formula (1): wherein Ar1 represents a substituted or unsubstituted aromatic group, Ar2 represents a phenyl group having a substituent at least at the 4-position thereof, R1 represents a linear or branched alkyl group, an alkyl group having a cyclic structure, a substituted or unsubstituted phenyl group or a substituted or unsubstituted phenyl(lower alkyl) group, and R2 represents a cyano group, a carboxyl group, a (lower alkoxy)carbonyl group, a substituted or unsubstituted lower alkyl group or a substituted or unsubstituted carbamoyl group, or salts thereof; and medicines comprising them as effective ingredients.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: January 20, 2004
    Assignee: Kowa Co., Ltd.
    Inventors: Masao Ohkuchi, Yoshinori Kyotani, Hiromichi Shigyo, Hideo Yoshizaki, Tomoyuki Koshi, Takahiro Kitamura, Takayuki Matsuda, Kyoko Yasuoka, Tomoko Furuyama