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).
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Patent number: 6747022Abstract: 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: GrantFiled: August 15, 2002Date of Patent: June 8, 2004Assignee: Zeria Pharmaceutical Co., Ltd.Inventors: Katsuo Shinozaki, Masakazu Murata, Kiyoto Maeda, Hiroaki Taguchi, Nobuo Kawase, Naoyoshi Miura
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Publication number: 20030096809Abstract: Provided are calcium salts of a 1,5-benzodiazepine derivative represented by the following formula (I): 1Type: ApplicationFiled: August 15, 2002Publication date: May 22, 2003Inventors: Katsuo Shinozaki, Masakazu Murata, Kiyoto Maeda, Hiroaki Taguchi, Nobuo Kawase, Naoyoshi Miura
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Patent number: 6344452Abstract: 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: GrantFiled: December 5, 2000Date of Patent: February 5, 2002Assignee: Zeria Pharmaceuticals Co., Ltd.Inventors: Katsuo Shinozaki, Tomoyuki Yoneta, Masakazu Murata, Naoyoshi Miura, Kiyoto Maeda
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Patent number: 6239131Abstract: 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: GrantFiled: June 8, 1999Date of Patent: May 29, 2001Assignee: Zeria Pharmaceutical Co., Ltd.Inventors: Katsuo Shinozaki, Tomoyuki Yoneta, Masakazu Murata, Naoyoshi Miura, Kiyoto Maeda
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Patent number: 5049575Abstract: 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: GrantFiled: November 3, 1989Date of Patent: September 17, 1991Assignee: Sumitomo Chemical CompanyInventors: Tadashi Ohsumi, Tatsuya Mori, Sumio Nishida, Shigeo Nakamura, Kiyoto Maeda, Hirotaka Takano
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Patent number: 5004816Abstract: 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: GrantFiled: July 20, 1989Date of Patent: April 2, 1991Assignee: Sumitomo Chemical Company, LimitedInventors: Tatsuya Mori, Tadashi Ohsumi, Shigeo Nakamura, Kiyoto Maeda, Sumio Nishida, Hirotaka Takano
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Patent number: 4946867Abstract: 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: GrantFiled: August 22, 1988Date of Patent: August 7, 1990Assignee: Sumitomo Chemical Company, LimitedInventors: Akio Manabe, Masato Mizutani, Kiyoto Maeda, Tadashi Ooishi, Hirotaka Takano, Osamu Kirino, deceased
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Patent number: 4927827Abstract: 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: GrantFiled: May 19, 1988Date of Patent: May 22, 1990Assignee: Sumitomo Chemical Company, LimitedInventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanemitsu, Satoru Inoue, Masayo Sugano, Hirotaka Tanako
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Patent number: 4877441Abstract: 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: GrantFiled: October 18, 1988Date of Patent: October 31, 1989Assignee: Sumitomo Chemical Company Ltd.Inventors: Tatsuya Mori, Tadashi Ohsumi, Shigeo Nakamura, Kiyoto Maeda, Sumio Nishida, Hirotaka Takano
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Patent number: 4873248Abstract: 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: GrantFiled: December 3, 1987Date of Patent: October 10, 1989Assignee: Sumitomo Chemical Co., Ltd.Inventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanemitsu, Satoru Inoue
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Patent number: 4868178Abstract: 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: GrantFiled: February 8, 1988Date of Patent: September 19, 1989Assignee: Sumitomo Chemical Company, Ltd.Inventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanamitsu, Satoru Inoue
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Patent number: 4837242Abstract: 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: GrantFiled: December 30, 1987Date of Patent: June 6, 1989Assignee: Sumitomo Chemical Company, LimitedInventors: Tadashi Ohsumi, Kazunori Tsushima, Sumio Nishida, Kiyoto Maeda, Tadashi Ooishi, Noritada Matsuo
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Patent number: 4783466Abstract: 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: GrantFiled: September 8, 1987Date of Patent: November 8, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanemitsu, Satoru Inoue
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Patent number: 4769376Abstract: 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: GrantFiled: September 5, 1986Date of Patent: September 6, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanemitsu, Satoru Inoue
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Patent number: 4752608Abstract: 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: GrantFiled: December 3, 1986Date of Patent: June 21, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Tsuguhiro Katoh, Kiyoto Maeda, Masao Shiroshita, Norihisa Yamashita, Yuzuru Sanemitsu, Satoru Inoue
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Patent number: 4742074Abstract: 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: GrantFiled: March 31, 1986Date of Patent: May 3, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Sumio Nishida, Tadashi Ohsumi, Kazunori Tsushima, Noritada Matsuo, Kiyoto Maeda, Satoru Inoue
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Patent number: 4511581Abstract: 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: GrantFiled: February 8, 1983Date of Patent: April 16, 1985Assignee: Sumitomo Chemical Company, LimitedInventors: Tadashi Ohsumi, Satoru Inoue, Kiyoto Maeda
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Patent number: 4117136Abstract: 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: GrantFiled: August 16, 1977Date of Patent: September 26, 1978Assignee: Sumitomo Chemical Company, Ltd.Inventors: Yoshio Hisada, Kiyoto Maeda, Hideo Agui