Patents by Inventor Yoji Hori
Yoji Hori 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: 10494330Abstract: The purpose of the present invention is to provide a cooling agent composition containing a novel methyl menthol derivative having no undesirable feeling of stimulation, malodor, bitterness, or the like, it being possible to use the cooling agent composition as a cooling agent or sensory stimulation agent having exceptional persistence of a sense of coolness and refreshing feeling. The present invention pertains to a cooling agent composition containing a methyl menthol derivative represented by general formula (1A) or general formula (1B).Type: GrantFiled: March 24, 2016Date of Patent: December 3, 2019Assignee: TAKASAGO INTERNATIONAL CORPORATIONInventors: Hisanori Itoh, Yoji Hori, Masashi Otsuka, Takaji Matsumoto, Tomoharu Sato
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Publication number: 20180057447Abstract: The purpose of the present invention is to provide a cooling agent composition containing a novel methyl menthol derivative having no undesirable feeling of stimulation, malodor, bitterness, or the like, it being possible to use the cooling agent composition as a cooling agent or sensory stimulation agent having exceptional persistence of a sense of coolness and refreshing feeling. The present invention pertains to a cooling agent composition containing a methyl menthol derivative represented by general formula (1A) or general formula (1B).Type: ApplicationFiled: March 24, 2016Publication date: March 1, 2018Applicant: TAKASAGO INTERNATIONAL CORPORATIONInventors: Hisanori ITOH, Yoji HORI, Masashi OTSUKA, Takaji MATSUMOTO, Tomoharu SATO
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Publication number: 20170282169Abstract: An aluminum catalyst is obtained by reacting at least one compound of a specific alkylaluminum compound and a specific hydridoaluminum compound with a specific hydroxy compound. The specific hydroxyl compound is a specific 2-cycloalkyl-6-arylphenol or a specific di(2-cycloalkyl-6-arylphenol). A method for producing isopulegol or optically active isopulegol includes selectively cyclizing citronellal using the aluminum catalyst.Type: ApplicationFiled: June 15, 2017Publication date: October 5, 2017Applicant: TAKASAGO INTERNATIONAL CORPORATIONInventors: Hisanori ITOH, Yoji HORI
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Publication number: 20150329452Abstract: A method for producing an optically active isopulegol includes asymmetrically isomerizing a specific compound in the presence of a ruthenium catalyst and a base, thereby giving an optically active citronellal, and selectively cyclizing the optically active citronellal in the presence of an aluminum catalyst. The aluminum catalyst is obtained by reacting a specific hydroxy compound and at least one aluminum compound selected from a specific alkylaluminum compound, a specific hydride aluminum compound, a specific linear aluminoxane and a specific cyclic aluminoxane.Type: ApplicationFiled: November 14, 2013Publication date: November 19, 2015Applicant: TAKASAGO INTERNATIONAL CORPORATIONInventors: Hisanori ITOH, Yoji HORI, Hiroyuki MATSUDA, Kazuhiko MATSUMURA, Takaji MATSUMOTO
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Publication number: 20150315110Abstract: An aluminum catalyst is obtained by reacting at least one compound of a specific alkylaluminum compound and a specific hydridoaluminum compound with a specific hydroxy compound. The specific hydroxyl compound is a specific 2-cycloalkyl-6-arylphenol or a specific di(2-cycloalkyl-6-arylphenol). A method for producing isopulegol or optically active isopulegol includes selectively cyclizing citronellal using the aluminum catalyst.Type: ApplicationFiled: November 14, 2013Publication date: November 5, 2015Applicant: TAKASAGO INTERNATIONAL CORPORATIONInventors: Hisanori ITOH, Yoji HORI
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Patent number: 9061959Abstract: An object of the present invention is to provide a method for manufacturing an optically active menthol having fewer steps, which generates less environmentally polluting waste because a catalytic reaction is involved in all of the steps, and is capable of saving a production cost. The present invention relates to a method for manufacturing an optically active menthol, including the following steps: A-1) asymmetrically hydrogenating at least one of geranial and neral to thereby obtain an optically active citronellal, B-1) conducting a ring-closure reaction of the optically active citronellal in the presence of an acid catalyst to thereby obtain an optically active isopulegol, and C-1) hydrogenating the optically active isopulegol to thereby obtain an optically active menthol.Type: GrantFiled: December 1, 2011Date of Patent: June 23, 2015Assignee: TAKASAGO INTERNATIONAL CORPORATIONInventors: Hironori Maeda, Hisanori Itoh, Shinya Yamada, Yoji Hori
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Patent number: 9000192Abstract: The present invention provides a catalyst used for manufacturing an optically active carbonyl compound by selective asymmetric hydrogenation of an ?, ?-unsaturated carbonyl compound, which is insoluble in a reaction mixture, and a method for manufacturing the corresponding optically active carbonyl compound. Particularly, the invention provides a catalyst for obtaining an optically active citronellal useful as a flavor or fragrance, by selective asymmetric hydrogenation of citral, geranial or neral. The invention relates to a catalyst for asymmetric hydrogenation of an ?, ?-unsaturated carbonyl compound, which comprises: a powder of at least one metal selected from metals belonging to Group 8 to Group 10 of the Periodic Table, or a metal-supported substance in which the at least one metal is supported on a support; an optically active cyclic nitrogen-containing compound; and an acid, and also relates to a method for manufacturing an optically active carbonyl compound using the same.Type: GrantFiled: November 29, 2011Date of Patent: April 7, 2015Assignee: Takasago International CorporationInventors: Shinya Yamada, Hironori Maeda, Yoji Hori
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Patent number: 8674144Abstract: The present invention provides a catalyst used for manufacturing an optically active carbonyl compound by selective asymmetric hydrogenation of an ?,?-unsaturated carbonyl compound, which is insoluble in a reaction mixture, and a method for manufacturing the corresponding optically active carbonyl compound. Particularly, the invention provides a catalyst for obtaining an optically active citronellal useful as a flavor or fragrance, by selective asymmetric hydrogenation of citral, geranial or neral. The invention relates to a catalyst for asymmetric hydrogenation of an ?,?-unsaturated carbonyl compound, which comprises: a powder of at least one metal selected from metals belonging to Group 8 to Group 10 of the Periodic Table, or a metal-supported substance in which the at least one metal is supported on a support; an optically active peptide compound; and an acid, and also relates to a method for manufacturing an optically active carbonyl compound using the same.Type: GrantFiled: November 28, 2011Date of Patent: March 18, 2014Assignee: Takasago International CorporationInventors: Shinya Yamada, Hironori Maeda, Yoji Hori
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Patent number: 8580991Abstract: To provide a process for increasing the proportion of an optical isomer of not only a compound having a closed ring but also a compound not having a closed ring when an optical isomer mixture of a compound having both a formyl group and a double bond capable of causing a carbonyl-ene ring closing reaction in the same molecule is subjected to a ring closing reaction. A process for increasing the proportion of an optical isomer characterized by subjecting an optical isomer mixture of a compound having both a formyl group and a double bond capable of causing a carbonyl-ene ring closing reaction in the same molecule to a ring closing reaction in the presence of a predetermined aluminum complex represented by the general formula: [Al2(L1)n(L2)3-n]m.Type: GrantFiled: December 17, 2009Date of Patent: November 12, 2013Assignee: Takasago International CorporationInventors: Hisanori Itoh, Yoji Hori
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Publication number: 20130217895Abstract: The present invention provides a catalyst used for manufacturing an optically active carbonyl compound by selective asymmetric hydrogenation of an ?, ?-unsaturated carbonyl compound, which is insoluble in a reaction mixture, and a method for manufacturing the corresponding optically active carbonyl compound. Particularly, the invention provides a catalyst for obtaining an optically active citronellal useful as a flavor or fragrance, by selective asymmetric hydrogenation of citral, geranial or neral. The invention relates to a catalyst for asymmetric hydrogenation of an ?, ?-unsaturated carbonyl compound, which comprises: a powder of at least one metal selected from metals belonging to Group 8 to Group 10 of the Periodic Table, or a metal-supported substance in which the at least one metal is supported on a support; an optically active cyclic nitrogen-containing compound; and an acid, and also relates to a method for manufacturing an optically active carbonyl compound using the same.Type: ApplicationFiled: November 29, 2011Publication date: August 22, 2013Applicant: TAKASAGO INTERNATIONAL CORPORATIONInventors: Shinya Yamada, Hironori Maeda, Yoji Hori
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Patent number: 8329931Abstract: A catalyst for obtaining isopulegol of high diastereoselectivity by highly selective cyclization reaction of citronellal is provided. The present invention relates to an organoaluminum compound obtained by reacting at least one organoaluminumoxy compound selected from the group consisting of chain aluminoxanes, cyclic aluminoxanes and bis(dialkylaluminumoxy)alkylboranes, with at least one hydroxy compound selected from the group consisting of diarylphenols, bis(diarylphenol) compounds, biaryldiols, dimethanols and silanols.Type: GrantFiled: May 25, 2011Date of Patent: December 11, 2012Assignee: Takasago International CorporationInventors: Hisanori Itoh, Yoji Hori
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Patent number: 8329930Abstract: Provided is a process in which cyclization of a compound having, in a molecule, a formyl group and a double bond which allow carbonyl-ene cyclization, the compound existing as a mixture of optical isomers thereof, increases the ratio of a particular optical isomer not only in a cyclized compound, but also in an unreacted compound. The process comprises performing, in the presence of a specified aluminum complex represented by the general formula: [Al2(L1)n(L2)3-n]m, cyclization of a compound having, in a molecule, a formyl group and a double bond which allow carbonyl-ene cyclization, the compound existing as a mixture of optical isomers thereof, to increase the ratio of a particular optical isomer.Type: GrantFiled: May 25, 2009Date of Patent: December 11, 2012Assignee: Takasago International CorporationInventors: Hisanori Itoh, Yoji Hori
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Patent number: 8217204Abstract: This invention aims at providing a catalyst for producing an optically active aldehyde or an optically active ketone, which is an optically active carbonyl compound, by carrying out selective asymmetric hydrogenation of an ?,?-unsaturated carbonyl compound, particularly a catalyst which is insoluble in a reaction mixture for obtaining optically active citronellal which is useful as a flavor or fragrance, by carrying out selective asymmetric hydrogenation of citral, geranial or neral; and a method for producing a corresponding optically active carbonyl compound.Type: GrantFiled: June 2, 2010Date of Patent: July 10, 2012Assignee: Takasago International CorporationInventors: Hironori Maeda, Yoji Hori
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Publication number: 20120136176Abstract: The present invention provides a catalyst used for manufacturing an optically active carbonyl compound by selective asymmetric hydrogenation of an ?,?-unsaturated carbonyl compound, which is insoluble in a reaction mixture, and a method for manufacturing the corresponding optically active carbonyl compound. Particularly, the invention provides a catalyst for obtaining an optically active citronellal useful as a flavor or fragrance, by selective asymmetric hydrogenation of citral, geranial or neral. The invention relates to a catalyst for asymmetric hydrogenation of an ?,?-unsaturated carbonyl compound, which comprises: a powder of at least one metal selected from metals belonging to Group 8 to Group 10 of the Periodic Table, or a metal-supported substance in which the at least one metal is supported on a support; an optically active peptide compound; and an acid, and also relates to a method for manufacturing an optically active carbonyl compound using the same.Type: ApplicationFiled: November 28, 2011Publication date: May 31, 2012Applicant: TAKASAGO INTERNATIONAL CORPORATIONInventors: Shinya YAMADA, Hironori MAEDA, Yoji HORI
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Publication number: 20110319638Abstract: To provide a process for increasing the proportion of an optical isomer of not only a compound having a closed ring but also a compound not having a closed ring when an optical isomer mixture of a compound having both a formyl group and a double bond capable of causing a carbonyl-ene ring closing reaction in the same molecule is subjected to a ring closing reaction. A process for increasing the proportion of an optical isomer characterized by subjecting an optical isomer mixture of a compound having both a formyl group and a double bond capable of causing a carbonyl-ene ring closing reaction in the same molecule to a ring closing reaction in the presence of a predetermined aluminum complex represented by the general formula: [Al1(L1)1(L2)m(Lh)n]k.Type: ApplicationFiled: December 17, 2009Publication date: December 29, 2011Applicant: TAKASAGO INTERNATIONAL CORPORATIONInventors: Hisanori Itoh, Yoji Hori
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Publication number: 20110295031Abstract: A catalyst for obtaining isopulegol of high diastereoselectivity by highly selective cyclization reaction of citronellal is provided. The present invention relates to an organoaluminum compound obtained by reacting at least one organoaluminumoxy compound selected from the group consisting of chain aluminoxanes, cyclic aluminoxanes and bis(dialkylaluminumoxy)alkylboranes, with at least one hydroxy compound selected from the group consisting of diarylphenols, bis(diarylphenol) compounds, biaryldiols, dimethanols and silanols.Type: ApplicationFiled: May 25, 2011Publication date: December 1, 2011Applicant: TAKASAGO INTERNATIONAL CORPORATIONInventors: Hisanori ITOH, Yoji HORI
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Publication number: 20110257412Abstract: To provide a process for increasing the proportion of an optical isomer of not only a compound having a closed ring but also a compound not having a closed ring when an optical isomer mixture of a compound having both a formyl group and a double bond capable of causing a carbonyl-ene ring closing reaction in the same molecule is subjected to a ring closing reaction. A process for increasing the proportion of an optical isomer characterized by subjecting an optical isomer mixture of a compound having both a formyl group and a double bond capable of causing a carbonyl-ene ring closing reaction in the same molecule to a ring closing reaction in the presence of a predetermined aluminum complex represented by the general formula: [Al2(L1)n(L2)3-n]m.Type: ApplicationFiled: December 17, 2009Publication date: October 20, 2011Applicant: TAKASAGO INTERNATIONAL CORPORATIONInventors: Hisanori Itoh, Yoji Hori
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Publication number: 20110082308Abstract: Provided is a process in which cyclization of a compound having, in a molecule, a formyl group and a double bond which allow carbonyl-ene cyclization, the compound existing as a mixture of optical isomers thereof, increases the ratio of a particular optical isomer not only in a cyclized compound, but also in an unreacted compound. The process comprises performing, in the presence of a specified aluminum complex represented by the general formula: [Al2(L1)n(L2)3-m]m, cyclization of a compound having, in a molecule, a formyl group and a double bond which allow carbonyl-ene cyclization, the compound existing as a mixture of optical isomers thereof, to increase the ratio of a particular optical isomer.Type: ApplicationFiled: May 25, 2009Publication date: April 7, 2011Inventors: Hisanori Itoh, Yoji Hori
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Publication number: 20100324338Abstract: This invention aims at providing a catalyst for producing an optically active aldehyde or an optically active ketone, which is an optically active carbonyl compound, by carrying out selective asymmetric hydrogenation of an ?,?-unsaturated carbonyl compound, particularly a catalyst which is insoluble in a reaction mixture for obtaining optically active citronellal which is useful as a flavor or fragrance, by carrying out selective asymmetric hydrogenation of citral, geranial or neral; and a method for producing a corresponding optically active carbonyl compound.Type: ApplicationFiled: June 2, 2010Publication date: December 23, 2010Applicant: TAKASAGO INTERNATIONAL CORPORATIONInventors: Hironori MAEDA, Yoji HORI
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Patent number: 7619003Abstract: A process for producing an optically active compound based on the hydrolysis of an alkenyl ester compound or the cleavage of an alkenyl ether compound. The process uses neither an acidic compound nor a basic compound, and reactants can be reacted in a high concentration. It does not necessitate a buffer, nutrient, etc. unlike enzymatic reactions or reactions using a microorganism. It is a simple process which attains a satisfactory production efficiency. The process, which is for producing an optically active carboxylic acid or optically active alcohol represented by the general formula (VI): (wherein R1, R2, and R3 are different groups; and A represents methylene, carbonyl, or a single bond), is characterized by causing water to act on an alkenyl ester or alkenyl ether represented by the general formula (I): (wherein R4, R5, and R6 each represents hydrogen, alkyl, etc.) in the presence of a specific transition metal complex having an optically active ligand.Type: GrantFiled: January 28, 2004Date of Patent: November 17, 2009Assignee: Japan Science and Technology AgencyInventors: Makoto Tokunaga, Yasushi Tsuji, Yasushi Obora, Yoji Hori, Hiroshi Aoyama