Patents by Inventor Kiyoto Maeda

Kiyoto Maeda 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: 6747022
    Abstract: Provided are calcium salts of a 1,5-benzodiazepine derivative represented by the following formula (I): (wherein, R1 represents a lower alkyl group, R2 represents a phenyl or cyclohexyl group, and Y represents a single bond or a lower alkylene group); a process for preparing the salts; and drugs containing the same as the active ingredient. The compounds exhibit a potent inhibitory activity against the secretion of gastric acid and potent antagonism against gastrin and/or CCK-B receptor.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: June 8, 2004
    Assignee: Zeria Pharmaceutical Co., Ltd.
    Inventors: Katsuo Shinozaki, Masakazu Murata, Kiyoto Maeda, Hiroaki Taguchi, Nobuo Kawase, Naoyoshi Miura
  • Publication number: 20030096809
    Abstract: Provided are calcium salts of a 1,5-benzodiazepine derivative represented by the following formula (I): 1
    Type: Application
    Filed: August 15, 2002
    Publication date: May 22, 2003
    Inventors: Katsuo Shinozaki, Masakazu Murata, Kiyoto Maeda, Hiroaki Taguchi, Nobuo Kawase, Naoyoshi Miura
  • Patent number: 6344452
    Abstract: This invention relates to 1,5-benzodiazepine derivatives, which are each represented by the following formula (1): wherein R1 represents a lower alkyl group, R2 and R3 may be the same or different and represent a hydrogen atom or a lower alkyl group, R4 represents a cyclohexyl group or phenyl group, and n stands for an integer of from 1 to 3, and also to medicines containing the same. These compounds are useful as curatives or preventives for diseases in which a gastrin receptor and/or a CCK-B receptor takes part.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: February 5, 2002
    Assignee: Zeria Pharmaceuticals Co., Ltd.
    Inventors: Katsuo Shinozaki, Tomoyuki Yoneta, Masakazu Murata, Naoyoshi Miura, Kiyoto Maeda
  • Patent number: 6239131
    Abstract: 1,5-Benzodiazepine derivatives represented by formula (I), salts thereof, and medicines containing the same as the active ingredient: The compounds exhibit excellent gastrin and/or CCK-B receptor antagonism and are useful as remedies for gastric ulcer and gastrointestinal movement disorder.
    Type: Grant
    Filed: June 8, 1999
    Date of Patent: May 29, 2001
    Assignee: Zeria Pharmaceutical Co., Ltd.
    Inventors: Katsuo Shinozaki, Tomoyuki Yoneta, Masakazu Murata, Naoyoshi Miura, Kiyoto Maeda
  • Patent number: 5049575
    Abstract: Fungicide contains a substituted pyrazole carboxylic acid of the formula: ##STR1## wherein R.sub.1 is a methyl or trifluoromethyl group, R.sub.2 is halogen atom, R.sub.3 and R.sub.4 are, same or different, a methyl or ethyl and R.sub.5 is an ethyl, propyl, butyl group or hydrogen atom.
    Type: Grant
    Filed: November 3, 1989
    Date of Patent: September 17, 1991
    Assignee: Sumitomo Chemical Company
    Inventors: Tadashi Ohsumi, Tatsuya Mori, Sumio Nishida, Shigeo Nakamura, Kiyoto Maeda, Hirotaka Takano
  • Patent number: 5004816
    Abstract: A substituted carboxylic acid derivative which is fungicidally active is provided. The compound has the formula: ##STR1## wherein R.sub.1 stands for a methyl or ethyl group, A stands for ##STR2## R.sub.2 stands for a methyl, ethyl or trifluoromethyl group, R.sub.3 stands for a methyl group or a halogen or hydrogen atom, R.sub.4 stands for a fluorine or hydrogen atom, R.sub.5 stands for a methyl, nitro or trifluoromethyl group or a halogen atom, Z stands for a .dbd.CH-- group or an N atom, R.sub.6 stands for a methyl, ethyl or trifluoromethyl group and R.sub.7 stands for an amino or methyl group or a chlorine atom.
    Type: Grant
    Filed: July 20, 1989
    Date of Patent: April 2, 1991
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tatsuya Mori, Tadashi Ohsumi, Shigeo Nakamura, Kiyoto Maeda, Sumio Nishida, Hirotaka Takano
  • Patent number: 4946867
    Abstract: A cyanoacetamide derivative of the formula, ##STR1## wherein R represents a C.sub.2 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.2 -C.sub.6 alkynyl or C.sub.3 -C.sub.6 cycloalky group, and X represents a chlorine or bromide atom or a trifluoromethyl or lower fluoroalkoxy group and a plant disease protectant comprising the same are disclosed. The cyanoacetamide derivative provided according to the present invention has an extremely high controlling activity against various plant diseases, particularly against rice blast (Pyricularia oryzae).
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: August 7, 1990
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Akio Manabe, Masato Mizutani, Kiyoto Maeda, Tadashi Ooishi, Hirotaka Takano, Osamu Kirino, deceased
  • Patent number: 4927827
    Abstract: A novel pyridinylpyrimidine derivative of the formula below, a method for preparation thereof and a fungicide containing it, ##STR1## which is effective as a fungicide.
    Type: Grant
    Filed: May 19, 1988
    Date of Patent: May 22, 1990
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanemitsu, Satoru Inoue, Masayo Sugano, Hirotaka Tanako
  • Patent number: 4877441
    Abstract: A substituted carboxylic acid derivative which is fungicidally active is provided. The compound has the formula: ##STR1## wherein R.sub.1 stands for a methyl or ethyl group, A stands for ##STR2## R.sub.2 stands for a methyl, ethyl or trifluoromethyl group, R.sub.3 stands for a methyl group or a halogen or hydrogen atom, R.sub.4 stands for a fluorine or hydrogen atom, R.sub.5 stands for a methyl, nitro or trifluoromethyl group or a halogen atom, Z stands for a .dbd.CH-- group or an N atom, R.sub.6 stands for a methyl, ethyl or trifluoromethyl group and R.sub.7 stands for an amino or methyl group or a chlorine atom.
    Type: Grant
    Filed: October 18, 1988
    Date of Patent: October 31, 1989
    Assignee: Sumitomo Chemical Company Ltd.
    Inventors: Tatsuya Mori, Tadashi Ohsumi, Shigeo Nakamura, Kiyoto Maeda, Sumio Nishida, Hirotaka Takano
  • Patent number: 4873248
    Abstract: A novel pyridinylpyrimidine derivative of the formula below, a method for preparation thereof and a fungicide containing it, ##STR1## which is effective as a fungicide.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: October 10, 1989
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanemitsu, Satoru Inoue
  • Patent number: 4868178
    Abstract: A novel pyridinyl-s-triazine derivative of the formula below, a method for preparation thereof and a fungicide containing it, ##STR1## which is effective as fungicide.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: September 19, 1989
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanamitsu, Satoru Inoue
  • Patent number: 4837242
    Abstract: Heterocyclic derivatives represented by the following formula have excellent preventive, curative and systemic controlliing effects on various plant microbes. ##STR1## wherein R.sup.1 represents a hydrogen atom or a methyl group, A represents ##STR2## wherein R.sup.2 represents a methyl group, an ethyl group or a trifluoromethyl group, Y.sup.1 represents an amino group, a methyl group or a chlorine atom, R.sup.3 represents a methyl group or a trifluoromethyl group and Z represents a hydrogen atom, a halogen atom or a methyl group and when A represents the formula: ##STR3## X represents an oxygen atom or sulfur atom and when A represents the formula: ##STR4## X represents a sulfur atom.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: June 6, 1989
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tadashi Ohsumi, Kazunori Tsushima, Sumio Nishida, Kiyoto Maeda, Tadashi Ooishi, Noritada Matsuo
  • Patent number: 4783466
    Abstract: A novel pyridinylpyrimidine derivative of the formula below, a method for preparation thereof and a plant disease protectant containing it, ##STR1## which is effective as a plant disease protectant.
    Type: Grant
    Filed: September 8, 1987
    Date of Patent: November 8, 1988
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanemitsu, Satoru Inoue
  • Patent number: 4769376
    Abstract: A novel pyridine derivative represented by the formula below, a method for preparation thereof and a plant disease protectant containing it, ##STR1## wherein R.sup.1 is a C.sub.1 -C.sub.7 alkyl group; R.sup.2 is a hydrogen atom or a C.sub.1 -C.sub.2 alkyl group, R.sup.3 is a C.sub.1 -C.sub.4 alkyl group; and R.sup.4 is a C.sub.2 -C.sub.8 alkyl group; a C.sub.3 -C.sub.7 cycloalkyl group or a C.sub.4 -C.sub.7 alkylcycloalkyl group, or a C.sub.1 -C.sub.3 alkyl group substituted with a C.sub.3 -C.sub.7 cycloalkyl group, which is effective as a plant disease protectant.
    Type: Grant
    Filed: September 5, 1986
    Date of Patent: September 6, 1988
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanemitsu, Satoru Inoue
  • Patent number: 4752608
    Abstract: A novel pyridinyl pyrimidine derivative of the formula below, a method for preparation thereof and a plant disease protectant containing it, ##STR1## which is effective as a plant disease protectant.
    Type: Grant
    Filed: December 3, 1986
    Date of Patent: June 21, 1988
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanemitsu, Satoru Inoue
  • Patent number: 4742074
    Abstract: A pyrazolecarboxamide derivative represented by the formula hereinbelow is useful since it has preventively, curatively or systematically controlling effects against various plant diseases and fungicides containing said compound as an active ingredient have excellent controlling activities: ##STR1## wherein R.sup.1 and R.sup.2 which are identical or different and represent each a hydrogen atom, a halogen atom, a methyl group, an ethyl group or a trifluoromethyl group, R.sup.3 represents a hydrogen atom or a methyl group and n represents 0 or 1.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: May 3, 1988
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Sumio Nishida, Tadashi Ohsumi, Kazunori Tsushima, Noritada Matsuo, Kiyoto Maeda, Satoru Inoue
  • Patent number: 4511581
    Abstract: A fungicidal indanylbenzamide derivative of the formula: ##STR1## wherein X is a lower alkyl, nitro, or trifluoromethyl group or a halogen atom, and R.sub.1, R.sub.2 and R.sub.3, which are same or different, each represents a hydrogen atom or a lower alkyl group.
    Type: Grant
    Filed: February 8, 1983
    Date of Patent: April 16, 1985
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tadashi Ohsumi, Satoru Inoue, Kiyoto Maeda
  • Patent number: 4117136
    Abstract: A method for preventing and eradicating bacterial infectious plant disease which comprises applying to plants a composition containing, as an active ingredient, at least one 4(1H)-oxo-3-quinolinecarboxylic acid derivative represented by the general formula (I): ##STR1## wherein A represents --OCH.sub.2 O--(at the 6 and 7 position) or ##STR2## (at the 5 and 6 position), wherein R.sub.4 represents a hydrogen atom or a lower alkyl group; R.sub.1 represents a hydrogen atom, a lower alkyl group, an amino group, an ammonium group or an alkali metal atom; R.sub.2 represents a lower alkyl group, a halogenated lower alkyl group, a hydroxyalkyl group, an alkenyl group, or an alkoxyl group; and R.sub.3 represents a hydrogen atom or a lower alkyl group.
    Type: Grant
    Filed: August 16, 1977
    Date of Patent: September 26, 1978
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventors: Yoshio Hisada, Kiyoto Maeda, Hideo Agui