Patents by Inventor Satoru Kumazawa
Satoru Kumazawa 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: 8309733Abstract: [Technical Problem] To provide a novel imino derivative capable of being an insecticide compound having excellent characteristics such as sustained effects and broad spectrum. [Solution to Problem] To provide an imino derivative represented by Formula (1). wherein “Ar” denotes a heterocyclic group which may have a substituent on the ring; “X” denotes a sulfur atom or CH2, NR; “R” denotes a hydrogen atom or an alkyl group; “Y” is selected from COR1 or CONR3R4, CONHCOR5, CO2R9; and each of “R1”, “R3”, “R4”, “R5”, and “R9” denotes a hydrogen atom or a certain substituent.Type: GrantFiled: July 1, 2009Date of Patent: November 13, 2012Assignees: Meji Seika Pharma Co., Ltd., Gifu UniversityInventors: Shinzo Kagabu, Masaru Mori, Satoru Kumazawa
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Publication number: 20120277440Abstract: To provide a novel imino derivative capable of being an insecticide compound which is excellent in characteristics such as sustained effects and a broad spectrum. An imino derivative represented by Formula (A) shown below: wherein “Ar” represents a heterocyclic group which may have a substituent on the ring, “X” represents a sulfur atom or CH2, NR; “R” represents a hydrogen atom or an alkyl group; “Ya” is selected from “C(?S)NR1R2”, “C(?S)SR3”, “C(?O)SR4”, “C(?S)OR4”, “SO2Z?”, and “OZ?”; and, each of “R1” to “R4”, “Z?”, and “Z?” represents a hydrogen atom or a certain substituent; is provided.Type: ApplicationFiled: January 6, 2011Publication date: November 1, 2012Applicants: MEIJI SEIKA PHARMA CO., LTD., GIFU UNIVERSITYInventors: Shinzo Kagabu, Satoru Kumazawa, Tsumoru Watanabe, Taiji Miyake, Masahiro Nomura, Satoshi Nakamura, Masaaki Mitomi
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Publication number: 20110172433Abstract: [Technical Problem] To provide a novel imino derivative capable of being an insecticide compound having excellent characteristics such as sustained effects and broad spectrum. [Solution to Problem] To provide an imino derivative represented by Formula (1). wherein “Ar” denotes a heterocyclic group which may have a substituent on the ring; “X” denotes a sulfur atom or CH2, NR; “R” denotes a hydrogen atom or an alkyl group; “Y” is selected from COR1 or CONR3R4, CONHCOR5, CO2R9; and each of “R1”, “R3”, “R4”, “R5”, and “R9” denotes a hydrogen atom or a certain substituent.Type: ApplicationFiled: July 1, 2009Publication date: July 14, 2011Applicants: MEIJI SEIKA KAISHA, LTD., GIFU UNIVERSITYInventors: Shinzo Kagabu, Masaru Mori, Satoru Kumazawa
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Patent number: 7166750Abstract: 5-[(4-chlorophenyl)methyl]-2,2-dimethylcyclopentanone is produced by reacting 1-[(4-chlorophenyl)methyl]-3-methyl-2-oxocyclopentanecarboxylic acid methyl ester or 1-[(4-chlorophenyl)methyl]-3-methyl-2-oxocyclopentanecarboxylic acid ethyl ester with sodium hydride and methyl halide, then hydrolyzing the obtained 1-[(4-chlorophenyl)methyl]-3,3-dimethyl-2-oxocyclopentanecarboxylic acid methyl ester or 1-[(4-chlorophenyl)methyl]-3,3-dimethyl-2-oxocyclopentanecarboxylic acid ethyl ester. The process provides 5-[(4-chlorophenyl)methyl]-2,2-dimethylcyclopentanone, an important intermediate of an agricultural or horticultural fungicide, e.g., Metconazole.Type: GrantFiled: August 11, 2000Date of Patent: January 23, 2007Assignee: Kureha CorporationInventors: Kazuhiko Sunagawa, Hajime Hoshi, Shigeru Mizusawa, Nobuyuki Kusano, Satoru Kumazawa
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Patent number: 6271385Abstract: N-heterocyclicmethylpropylamine derivatives of formula (I): and acid addition salts thereof; wherein R1 represents hydrogen, halogen, alkyl, alkenyl, halogenated alkyl, alkoxy, halogenated alkoxy, hydroxyl, cyano, nitro, phenyl optionally having a substituent on a ring thereof or phenoxy; n represents an integer of 0-5; R2 represents a heterocycle containing at least one nitrogen atom as the hetero atom and optionally having a substituent on a ring thereof; and R3 represents hydrogen or C1-C5 alkyl.Type: GrantFiled: March 10, 2000Date of Patent: August 7, 2001Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Atsushi Ito, Satoru Kumazawa, Keiichi Sudo, Tsumoru Watanabe, Takayoshi Eizuka, Yoshitaka Niizeki
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Patent number: 5681979Abstract: The present invention provides a process for producing alkylcyclopentanone derivatives of formula (1) by reacting alkyl cyclopentanone derivatives of formula (2) and alkyl halides of formula (3) in an organic solvent in the presence of molecular sieves and an alkaline metal hydroxide: ##STR1## wherein R.sup.1 is C.sub.1 -C.sub.4 alkyl group; R.sup.2 is hydrogen atom or C.sub.1 -C.sub.5 alkyl group; R.sup.3 is C.sub.1 -C.sub.5 alkyl group; Y is halogen atom, C.sub.1 -C.sub.5 alkyl group, C.sub.1 -C.sub.5 haloalkyl group, phenyl group, cyano group or nitro group; n is an integer from 0 to 5; when n is 2 or greater, Y's may be identical or different; R.sup.3 in formula (3) is the same as R.sup.3 in formula (1); and a process for preparing alkylcyclopentanone derivatives of formula (5) by reacting cyclopentanone derivatives of formula (4) and alkyl halides of formula (6) in an organic solvent in the presence of molecular sieves and an alkaline metal hydroxide: ##STR2## wherein R.sup.1 is C.sub.1 -C.sub.Type: GrantFiled: March 1, 1996Date of Patent: October 28, 1997Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Hajime Hoshi, Satoru Kumazawa
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Patent number: 5519160Abstract: Derivatives of alkyl 3-(substituted or unsubstituted benzylidene)-1-alkyl-2-oxocylopentanecarboxylate of the following formula (I), ##STR1## wherein R.sup.1 and R.sup.2 individually represent a lower alkyl group; X is a halogen atom, a cyano group, an alkyl group, a haloalkyl group, a phenyl group, or a nitro group; and m is an integer of 0 to 5; provided when m is 2 or larger, Xs may be either the same or different. The compounds are useful themselves as an effective ingredient of antifungal compositions, and can be used for intermediates of agriculture chemicals and medicines.Type: GrantFiled: November 15, 1994Date of Patent: May 21, 1996Assignee: Kureha Chemical Industry Co., Ltd.Inventors: Heitaro Obara, Satoru Kumazawa
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Patent number: 5504096Abstract: Disclosed herein is a method for preventing deterioration of an industrial material by using an azole derivative represented by the following formula ##STR1## wherein X means a halogen atom or a C.sub.1 -C.sub.5 alkyl, haloalkyl, phenyl, cyano or nitro group, n stands for 0 or an integer of 1-5, A denotes a nitrogen atom or CH, R.sub.1 and R.sub.2 mean individually a hydrogen atom or a C.sub.1 -C.sub.5 alkyl group, R.sub.3 denotes a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group, and when n is an integer of 2-5, Xs may be the same or different. A biocidal composition for the method is also disclosed.Type: GrantFiled: October 29, 1993Date of Patent: April 2, 1996Assignee: Kureha Kagaku Kogyo K.K.Inventors: Masato Arahira, Toshihide Saishoji, Katsuhisa Ohsugi, Satoru Kumazawa
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Patent number: 5494821Abstract: In the present invention, an optically active cis type 1,2-diol derivative of the following formula (I) is produced by reacting a cis type 1,2-diol derivative of the formula (I) with a carboxylic acid derivative of the formula (II) in the presence of a lipase: ##STR1## wherein R.sup.1 and R.sup.2 independently represent hydrogen atom or an alkyl group, X represents a halogen atom, a nitro group, a cyano group, an alkyl group, a haloalkyl group, or a phenyl group, and n represents an integer of from 0 to 5; R.sup.3 represents a C.sub.1 -C.sub.10 alkyl group or an aryl group, and R.sup.4 represents a hydrogen atom, a C.sub.1 -C.sub.5 alkyl group, a C.sub.2 -C.sub.4 alkenyl group, or COR.sub.3.The cis type means that the bond between the cyclopentane ring and the hydroxy group and the bond between the cyclopentane ring and the benzyl group reside in the same direction as that portrayed on the paper.Type: GrantFiled: October 13, 1994Date of Patent: February 27, 1996Assignee: Kureha Kagaku Kogyo K.K.Inventors: Eisaku Takahashi, Takashi Kimura, Satoru Kumazawa
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Patent number: 5493063Abstract: This invention provides a process for producing an optically active 1,2-diol derivative by optical resolution. The optically active 1,2-diol derivative of the formula (I) which is capable of utilizing as an intermediate of fungicidal optically-active azole derivatives can be produced by esterifying a 1,2-diol derivative of the formula (I) as a substrate with a carboxylic acid derivative of the formula (II) as a reagent in the presence of a lipase as a catalyst. ##STR1## wherein R.sup.1 is C1-C5 alkyl group, C3-C7 cycloalkyl group or C1-C5 haloalkyl group, R.sup.2 is C1-C3 alkyl group substituted by a phenyl group which may have one or two halogen atoms and/or C1-C4 alkyl groups, C2-C3 alkenyl group substituted by a phenyl group which may have one or two halogen atoms and/or C1-C4 alkyl groups, or C1-C3 alkyl group substituted by a phenoxy group which may have one or two halogen atoms and/or C1-C4 alkyl groups, R.sup.3 is C1-C10 alkyl group or aryl group, and R.sup.Type: GrantFiled: November 21, 1994Date of Patent: February 20, 1996Assignee: Kureha Kagaku Kogyo K.K.Inventors: Eisaku Takahashi, Takashi Kimura, Satoru Kumazawa
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Patent number: 5468869Abstract: This invention provides a simple process for production of an (azolylmethyl)(biphenylmethyl)cyclopentanol derivative represented by the following formula (I) in a good yield. This process comprises, as described in the following reaction formula, reacting an (azolylmethyl)(halogenophenylmethyl)cyclopentanol derivative represented by the following formula (II) with a benzene derivative represented by the following formula (III) by light irradiation. ##STR1## wherein X denotes a halogen atom, R.sup.1 and R.sup.2 denote independently a hydrogen atom or a C1-C5 alkyl group, R.sup.3 denotes a C1-C5 alkyl group, n means an integer of 0-2, and A represents CH or N.Type: GrantFiled: September 22, 1993Date of Patent: November 21, 1995Assignee: Kureha Kagaku Kogyo K.K.Inventors: Satoru Kumazawa, Hiroyuki Enari
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Patent number: 5466816Abstract: A process for preparing a derivative of azolylmethylcycloalkanol of the following formula (I) comprising, providing a solid-liquid two-phase mixture of a cycloalkanone derivative of formula (II), an azole compound of formula (III), a metal oxide of formula (IV), and an organic solvent, and adding a sulfonium compound of formula (V) to said solid-liquid two-phase mixture under heating while stirring, ##STR1## wherein R.sup.1 and R.sup.2 individually represent a hydrogen atom or an alkyl group; X is a halogen atom, an alkyl group, a haloalkyl group, a phenyl group, a cyano group, or a nitro group; m is an integer of 0 to 5 (when m is 2 or larger, Xs may be either the same or different); n is an integer of 0 to 2; A represents a nitrogen atom or a group CH; M.sup.1 represents an alkali metal atom or an alkaline earth metal atom; M.sup.2 represents an alkaline earth metal atom, a zinc atom, or two alkali metal atoms; Y represents a halogen atom or a C.sub.1 -C.sub.Type: GrantFiled: November 10, 1994Date of Patent: November 14, 1995Assignee: Kureha Chemical Industry Co., Ltd.Inventors: Eyji Yoshida, Nobuyuki Kusano, Satoru Kumazawa
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Patent number: 5446167Abstract: A process for separating a cis isomer from a mixture of the cis isomer and a trans isomer of an azolylmethylcyclopentanol derivative of the formula (I): ##STR1## wherein, R.sup.1 and R.sup.2 each independently represent a hydrogen atom or an alkyl group; each X represents a halogen atom, an alkyl group, a haloalkyl group, a phenyl group, a cyano group or a nitro group; n is an integer of from 0 to 5; A represents a nitrogen atom or a CH group; and each X may be identical or different when n is an integer of from 2 to 5, comprising the steps of dehydrating selectively the trans isomer in the presence of an acid and isolating the cis isomer.Type: GrantFiled: October 11, 1994Date of Patent: August 29, 1995Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Shoichiro Hayashi, Kazuhiko Sunagawa, Satoru Kumazawa
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Patent number: 5414105Abstract: Disclosed herein are an azole derivative represented by the formula (I): ##STR1## wherein R.sup.1 and R.sup.2 respectively represent a (C.sub.1 -C.sub.5) alkyl group or a hydrogen atom; X represents a halogen atom, a (C.sub.1-C.sub.5) alkyl group or a phenyl group; n represents an integer of from 0 to 2 and A represents a nitrogen atom or a CH, provided that R.sup.1 is not a hydrogen atom when R.sup.2 is a hydrogen atom, a process for producing the azole derivative represented by the formula (I), and an agricultural and horticultural composition containing the azole derivative represented by the formula (I).Type: GrantFiled: May 17, 1993Date of Patent: May 9, 1995Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Satoru Kumazawa, Susumu Shimizu, Hiroyuki Enari, Atsushi Ito, Susumu Ikeda, Nobuo Sato, Toshihide Saishoji
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Patent number: 5321038Abstract: Disclosed herein is a process for preparing a cis-azole derivative represented by the general formula (I) ##STR1## wherein R.sup.1 and R.sup.2 denote each a hydrogen atom or an alkyl group, R denotes a halogen atom, a nitro group, a cyano group, an alkyl group, a haloalkyl group or a phenyl group, A denotes a nitrogen atom or a methine group, and n stands for an integer of 1-5, which comprises reducing an azolylmethyloxabicyclohexane derivative represented by the general formula (VI) ##STR2## wherein R.sup.1, R.sup.2, R, A and n have the same meanings as defined above. A fungicidal composition comprising the azolylmethyloxabicyclohexane derivative represented by the above-mentioned general formula (VI) is also desclosed.Type: GrantFiled: March 19, 1993Date of Patent: June 14, 1994Assignee: Kureha Kagaku Kogyo K.K.Inventors: Masanori Minoguchi, Satoru Kumazawa
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Patent number: 5292764Abstract: Disclosed herein is a method for preventing deterioration of an industrial material by using an azole derivative represented by the following formula ##STR1## wherein X means a halogen atom or a C.sub.1 -C.sub.5 alkyl, haloalkyl, phenyl, cyano or nitro group, n stands for 0 or an integer of 1-5, A denotes a nitrogen atom or CH, R.sub.1 and R.sub.2 mean individually a hydrogen atom or a C.sub.1 -C.sub.5 alkyl group, R.sub.3 denotes a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group, and when n is an integer of 2-5, Xs may be the same or different. A biocidal composition for the method is also disclosed.Type: GrantFiled: July 24, 1992Date of Patent: March 8, 1994Assignee: Kureha Kagaku Kogyo K.K.Inventors: Masato Arahira, Toshihide Saishoji, Katsuhisa Ohsugi, Satoru Kumazawa
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Patent number: 5264450Abstract: The present invention discloses an azole-substituted cycloalkanol derivative represented by the formula (I) available for agricultural and horticultural fungicide and a process for preparing the same: ##STR1## wherein R.sup.1 represents a lower alkyl group, R.sup.2 represents a hydrogen atom or a lower alkyl group, n is an integer of 1 or 2 and A represents a nitrogen atom or a CH group.Type: GrantFiled: April 6, 1992Date of Patent: November 23, 1993Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Atsushi Ito, Toshihide Saishoji, Satoru Kumazawa
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Patent number: 5258404Abstract: Disclosed is a 3-(unsubstituted or substituted benzyl)-1-alkyl-2-oxocyclopentane carboxylic acid alkyl ester derivative as represented by the general formula (I): ##STR1## where R.sup.1 and R.sup.2 are each a lower alkyl group;X is a halogen atom, a cyano group, an alkyl group, a haloalkyl group, a phenyl group or a nitro group; andm is 0 or an integer from 1 to 5 and when m is greater than 1 each X can be the same or different.Further, disclosed is a method for the preparation of the compound (I) by carrying out the benzylation, rearrangement, and alkylation from the 2-oxocyclopentane carboxylic acid alkyl ester derivative without isolation of any intermediate compound. In addition, a fungicide is provided in which the 3-(unsubstituted or substituted benzyl)-1-alkyl-2-oxocyclopentane carboxylic acid alkyl ester derivatives (I) is contained as an active ingredient.Type: GrantFiled: September 16, 1992Date of Patent: November 2, 1993Assignee: Kureha Chemical Industry Co., Ltd.Inventors: Isao Ichinose, Masanori Minoguchi, Satoru Kumazawa, Eyji Yoshida
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Patent number: 5240955Abstract: Disclosed herein are azole derivatives or the salts thereof which are represented by the general formula (I): ##STR1## wherein X represents a halogen atom, an alkyl group having 1 to 5 carbon atoms, a haloalkyl group, a phenyl group, a cyano group, or a nitro group, Xs being either the same or different from each other; n represents an integer of 1 to 5; A represents a nitrogen atom or CH; and one of R.sub.1 and R.sub.Type: GrantFiled: August 13, 1992Date of Patent: August 31, 1993Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventor: Satoru Kumazawa
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Patent number: 5239089Abstract: Disclosed herein are an azole derivative represented by the formula (I): ##STR1## wherein R.sup.1 and R.sup.2 respectively represent a (C.sub.1 -C.sub.5) alkyl group or a hydrogen atom; X represents a halogen atom, a (C.sub.1 -C.sub.5) alkyl group or a phenyl group; n represents an integer of from 0 to 2 and A represents a nitrogen atom or a CH, provided that R.sup.1 is not a hydrogen atom when R.sup.2 is a hydrogen atom, a process for producing the azole derivative represented by the formula(I),and an agricultural and horticultural composition containing the azole derivative represented by the formula(I).Type: GrantFiled: July 8, 1992Date of Patent: August 24, 1993Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Satoru Kumazawa, Susumu Shimizu, Hiroyuki Enari, Atsushi Ito, Susumu Ikeda, Nobuo Sato, Toshihide Saishoji