Patents by Inventor Junji Koshino
Junji Koshino 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: 6617304Abstract: The invention discloses a method for the production of a macrocyclic lactone represented by a formula (2), which comprises subjecting a hydroxycarboxylic acid ester represented by a formula (1) to intramolecular esterification reaction. In the formulae (1) and (2), m is an integer of from 5 to 10, n is an integer wherein m+n becomes from 11 to 16, X represents —CH2—, —CH═CH—, —O—, —S— or —NH—, and R represents a hydrocarbon group having from (m+n+2) to 40 carbon atoms or a group represented by —(AO)pR1 wherein AO represents an alkyleneoxy group having from 2 to 4 carbon atoms, p is average addition mole number of alkylene oxide and R1 represents a hydrocarbon group having a specified number of carbon atoms so that the total number of carbon atoms of the —(AO)pR1 group becomes from (m+n+2) to 40.Type: GrantFiled: November 7, 2000Date of Patent: September 9, 2003Assignee: Kao CorporationInventors: Takashi Aoki, Shinji Kotachi, Junji Koshino
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Patent number: 6500990Abstract: A process for efficiently producing a 2-alkyl-2-cyclopentenone comprising reacting an amine and a hydrogen halide, which are present in a ratio ranging from 1.1:1 to 5:1, with a 2-alkylidene cyclopentanone to carry out an isomerization reaction. A process for producing a jasmonate derivative comprising reacting a 2-alkyl-2-cyclopentenone with a malonic acid diester.Type: GrantFiled: March 13, 2001Date of Patent: December 31, 2002Assignee: Kao CorporationInventors: Takahiro Asada, Yoshiharu Ataka, Junji Koshino
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Patent number: 6495706Abstract: The present invention provides a process for producing hydroxycarboxylic acid esters easily, further at a high reaction selectivity, by using an inexpensive catalyst. That is, the present invention provides a process for producing hydroxycarboxylic acid esters, which comprises hydrogenating dicarboxylic acid diesters having 3 to 20 carbon atoms in the dicarboxylic acid moiety in the presence of a copper catalyst comprising 1 to 40% by weight of copper as copper oxides.Type: GrantFiled: May 24, 2001Date of Patent: December 17, 2002Assignee: Kao CorporationInventors: Takashi Aoki, Shinji Kotachi, Taku Mimura, Junji Koshino
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Publication number: 20020016483Abstract: The present invention provides a process for producing hydroxycarboxylic acid esters easily, further at a high reaction selectivity, by using an inexpensive catalyst. That is, the present invention provides a process for producing hydroxycarboxylic acid esters, which comprises hydrogenating dicarboxylic acid diesters having 3 to 20 carbon atoms in the dicarboxylic acid moiety in the presence of a copper catalyst comprising 1 to 40% by weight of copper as copper oxides.Type: ApplicationFiled: May 24, 2001Publication date: February 7, 2002Applicant: Kao CorporationInventors: Takashi Aoki, Shinji Kotachi, Taku Mimura, Junji Koshino
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Publication number: 20010049455Abstract: The present invention provides a method for efficiently producing a 2-alkyl-2-cyclopentenone as well as a method for producing a jasmonate derivative by using the same. That is, in the present invention, the compound (2) is obtained by reacting an amine and a hydrogen halide with the compound (1) at a specific ratio to carry out isomerization reaction or by reacting a catalyst comprising an amine and a hydrogen halide with the compound (3) to carry out dehydration-isomerization reaction.Type: ApplicationFiled: March 13, 2001Publication date: December 6, 2001Applicant: Kao CorporationInventors: Takahiro Asada, Yoshiharu Ataka, Junji Koshino
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Patent number: 6320067Abstract: A nitrile having formula (2): RC≡N (2) wherein R represents a substituted or unsubstituted alkyl, alkenyl, aralkyl or aryl group having 3 to 20 carbon atoms, is produced by a process, which comprises heating an aldoxime having formula (1): RCH═NOH (1) wherein R is as defined above, at 80 to 250° C. in the presence of a catalyst (A) of an alkali metal or alkaline earth metal salt of a saturated or unsaturated mono- or dicarboxylic acid having 2 to 20 carbon atoms while removing product water from the reaction system by distillation.Type: GrantFiled: May 26, 2000Date of Patent: November 20, 2001Assignee: Kao CorporationInventors: Masayuki Oku, Junji Koshino
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Patent number: 6262014Abstract: The present invention relates to 5-benzylhexanol-2 and a perfume composition comprising the same. The perfume composition according to the present invention has a floral scent, high stability and, in the mixture system of a product, excellent scent lasting property.Type: GrantFiled: June 25, 1998Date of Patent: July 17, 2001Assignee: Kao CorporationInventors: Makoto Kohama, Junji Koshino, Nao Toi, Kazuyuki Fukuda
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Patent number: 5962403Abstract: The present invention relates to a perfume base composition comprising a carrier and a benzyl-substituted cyclohexanol having formula (1), wherein the dashed line denotes an optional double bond and the benzyl group is in the 2-, 3- or 4-position of the cyclohexanol ring, with the proviso that the benzyl group is in the 4-position when a double bond is present in the cyclohexanol ring. The composition has not only a well-balanced fragrance but also excellent retentivity of fragrance.Type: GrantFiled: February 2, 1998Date of Patent: October 5, 1999Assignee: Kao CorporationInventors: Makoto Kohama, Junji Koshino, Kazuyuki Fukuda, Nao Toi
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Patent number: 5912362Abstract: High-purity isochroman compounds can be obtained in high yields according to a simple and economical process for preparing isochroman compounds, comprising the step of adding an aquesous solution of formaldehyde having a concentration of 40 to 70 wt. % to a complex of an arylalkanol represented by the following general formula (II) with a Friedel-Crafts catalyst to cyclize the arylalkanol: ##STR1## wherein R.sub.1 and R.sub.2 each stands for a hydrogen atom, a lower alkyl group or a lower alkoxyl group, or alternatively R.sub.1 and R.sub.2 are respectively bonded to adjacent carbon atoms with mutual bonding of R.sub.1 and R.sub.2 together with the carbon atoms respectively bonded to R.sub.1 and R.sub.2 to form a benzene ring, a naphthalene ring, or a C.sub.5 or C.sub.6 cycloalkane or cycloalkene which may have 1 to 6 lower alkyl groups; and R.sub.3 stands for a hydrogen atom or a lower alkyl group.Type: GrantFiled: November 10, 1997Date of Patent: June 15, 1999Assignee: Kao CorporationInventors: Shigeyoshi Tanaka, Masayuki Oku, Junji Koshino
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Patent number: 5907048Abstract: To provide a simple process for economically preparing a dihydropyrane compound at a high productivity and a high reaction yield.To use a compound selected from the group consisting of a base and a compound (VIII) having a weaker coordination power to the Lewis acid than the aldehyde compound and having an activity to dissolve the Lewis acid, coordinated by the compound (VIII), in a solvent as a co-catalyst in reacting aldehyde with a diene compound in the presence of a Lewis acid to prepare a 5,6-dihydro-2H-pyrane compound represented by formula (III): ##STR1## in which R.sup.1 represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, aryl group which may be substituted with alkyl group, having 6 to 12 total carbon atoms; R.sup.2 and R.sup.3 represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.Type: GrantFiled: September 30, 1997Date of Patent: May 25, 1999Assignee: Kao CorporationInventors: Tohru Nishioka, Shigeyoshi Tanaka, Junji Koshino, Osamu Yamashita, Tadahiro Ozawa, Makoto Kohama
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Patent number: 5874649Abstract: The object of the present invention resides in efficiently providing unsaturated alcohol from an .alpha.,.beta.-unsaturated aldehyde.The present invention provides a process for preparing unsaturated alcohol by selectively reducing the aldehyde group of an .alpha.,.beta.-unsaturated aldehyde in the presence of a primary or a secondary alcohol having 2 to 8 carbon atoms using an aluminum alcoholate to produce an unsaturated alcohol such as compounds represented by the formula (III). ##STR1## (wherein R represents an alkyl group having 1 to 3 carbon atoms) wherein the reaction is carried out with addition of a protonic acid.Type: GrantFiled: November 5, 1997Date of Patent: February 23, 1999Assignee: Kao CorporationInventors: Shigeyoshi Tanaka, Shinji Kotachi, Junji Koshino, Junko Yamamoto
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Patent number: 5811610Abstract: A tricyclo?5.2.1.0.sup.2,6 !deca-8-ene-2-carboxylate; a method preparing the same; a method for preparing the tricyclo?5.2.1.0.sup.2,6 !decane-2-carboxylate by reducing a double bond of the tricyclo?5.2.1.0.sup.2,6 !deca-8-ene-2-carboxylate; and a perfume comprising the tricyclo?5.2.1.0.sup.2,6 !decane-2-carboxylate.Type: GrantFiled: July 30, 1997Date of Patent: September 22, 1998Assignee: Kao CorporationInventors: Takahiro Asada, Yoshiharu Ataka, Junji Koshino, Hideto Takase
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Patent number: 5446208Abstract: A process for the production of an ether alcohol is disclosed, which comprises subjecting a cyclic ketal to hydrogenolysis in the presence of a catalyst containing palladium in an amount of from 50 to 100% by weight, based on the total active catalytic component present. According to the inventive process, ether alcohols which are useful as perfumes or raw materials for perfumes can be produced easily with low cost and high yield.Type: GrantFiled: March 14, 1994Date of Patent: August 29, 1995Assignee: Kao CorporationInventors: Junji Koshino, Hajime Miyabe, Yoshiaki Fujikura
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Patent number: 5221780Abstract: A 1-(2,6-dimethylphenyloxy)-2-alkanol of formula (1): ##STR1## wherein R is an alkyl group having 1 to 4 carbon atoms, and perfume compositions containing the alkanol having an intense woody note, and are useful as fragrance-imparting ingredients for various compositions, particularly in the cosmetic field.Type: GrantFiled: October 1, 1992Date of Patent: June 22, 1993Assignee: Kao CorporationInventors: Junji Koshino, Nao Toi, Katsuhiko Tajima, Yoshiaki Fujikura
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Patent number: 5194423Abstract: An .alpha.-(alkylcyclohexyloxy)-.beta.-alkanol of formula (1) ##STR1## wherein at least one of R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 is the group ##STR2## wherein R.sup.9 and R.sup.10 are the same or different alkyl groups having 1 to 4 carbon atoms or are coupled with each other to form a cycloalkyl group, and R.sup.11 is a hydrogen atom or an alkyl group having 1 to 4 carbons or is a hydrogen atom when R.sup.9 and R.sup.10 form the cycloalkyl group, and the remaining R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 groups are hydrogen atoms or methyl groups, and wherein R.sup.6, R.sup.7 and R.sup.8 are hydrogen atoms or the same or different alkyl groups having 1 to 6 carbon atoms.Type: GrantFiled: June 28, 1991Date of Patent: March 16, 1993Assignee: Kao CorporationInventors: Junji Koshino, Yoshiaki Fujikura, Nao Toi, Rieko Yuki, Hajime Miyabe
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Patent number: 5049544Abstract: Disclosed is a perfumery composition comprising a 2-cyclohexylpropionic acid or its derivative represented by the following formula (I): ##STR1## wherein R is a hydrogen atom, an alkyl group having 1-4 carbon atoms, or an alkenyl group having 2-4 carbon atoms.The compounds have a wide variety of odors and a wide application as perfumery compositions such as high-grade perfumery compositions, perfumes, soaps, shampoos, rinses, detergents, cosmetics, sprays, room fragrances, and the like.Type: GrantFiled: July 27, 1990Date of Patent: September 17, 1991Assignee: Kao CorporationInventors: Junji Koshino, Yoshiaki Fujikura, Nao Toi
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Patent number: 4978653Abstract: 2-Cyclohexylpropanal derivatives are disclosed. The derivatives are represented by the following formula (I): ##STR1## wherein P is a hydrogen atom and Q represents a group --CH.dbd.N--OH or a group --CH(OR).sub.2, wherein each R represents a lower alkyl group or two R's together form a lower alkylene group which may have a lower alkyl substituent, or P and Q together form a group ##STR2## wherein R' is a lower alkyl group. The compounds possess floral, fruity, or green odors and are useful for preparing perfume compositions.Type: GrantFiled: August 29, 1989Date of Patent: December 18, 1990Assignee: Kao CorporationInventors: Junji Koshino, Yoshiaki Fujikura, Manabu Fujita, Nao Toi
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Patent number: 4937073Abstract: A reformed vetiverol comprising 40% by weight or more of khusimol and 10% by weight or less of isovalencenol is disclosed. The vetiverol, containing a small amount of isovalencenol and a large amount of khusimol imparts a milder and more elegant odor than conventional vetiver oils or vetiverols. The reformed vetiverol can be prepared by a process comprising: esterifying alcohol components in a vetiver oil or a vetiverol, heating the esterified vetiver oil or a vetiverol to thermally decompose isovalencenol esters, hydrolyzing the remaining esters into alcohols, and separating the formed alcohols.Type: GrantFiled: January 27, 1989Date of Patent: June 26, 1990Assignee: Kao CorporationInventors: Yoshiaki Fujikura, Junji Koshino, Hiroaki Uchida, Manabu Fujita, Nao Toi
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Patent number: 4918052Abstract: A perfume base composition containing 2-cyclohexylpropanal is disclosed. 2-Cyclohexylpropanal can be prepared by subjecting 2-cyclohexylpropanol to liquid-phase dehydrogenation.Type: GrantFiled: January 26, 1989Date of Patent: April 17, 1990Assignee: Kao CorporationInventors: Junji Koshino, Yoshiaki Fujikura, Manabu Fujita, Nao Toi