Patents by Inventor Akira Yamamuro
Akira Yamamuro 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: 6436920Abstract: The invention relates to wrinkling modifiers and anti-aging cosmetic compositions which each comprise a guanidine derivative represented by the following general formula (1): wherein is a heterocyclic group selected from azetidine, pyrrolidine, piperidine, piperazine or morpholine, and R1 and R2 are the same or different from each other and independently a hydrogen atom, or an alkyl, hydroxyl, hydroxyalkyl, carboxyl, carboxyalkyl or amidino group, or a salt thereof. The cosmetic compositions are excellent in the effects of suppressing wrinkling and of removing wrinkles and give users a pleasant feeling upon use.Type: GrantFiled: August 23, 2001Date of Patent: August 20, 2002Assignee: Kao CorporationInventors: Tsutomu Fujimura, Noriko Ito, Minoru Nagai, Toshiya Ono, Akira Yamamuro, Yoshinori Takema
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Publication number: 20020022611Abstract: The invention relates to wrinkling modifiers and anti-aging cosmetic compositions which each comprise a guanidine derivative represented by the following general formula (1): 1Type: ApplicationFiled: August 23, 2001Publication date: February 21, 2002Applicant: KAO CORPORATIONInventors: Tsutomu Fujimura, Noriko Ito, Minoru Nagai, Toshiya Ono, Akira Yamamuro, Yoshinori Takema
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Patent number: 6306848Abstract: The invention relates to wrinkling modifiers and anti-aging cosmetic compositions which each comprise a guanidine derivative represented by the following general formula (1): wherein is a heterocyclic group selected from azetidine, pyrrolidine, piperidine, piperazine or morpholine, and R1 and R2 are the same or different from each other and independently a hydrogen atom, or an alkyl, hydroxyl, hydroxyalkyl, carboxyl, carboxyalkyl or amidino group, or a salt thereof. The cosmetic compositions are excellent in the effects of suppressing wrinkling and of removing wrinkles and give users a pleasant feeling upon use.Type: GrantFiled: April 6, 1999Date of Patent: October 23, 2001Assignee: Kao CorporationInventors: Tsutomu Fujimura, Noriko Ito, Minoru Nagai, Toshiya Ono, Akira Yamamuro, Yoshinori Takema
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Patent number: 6187955Abstract: A guanidine derivative represented by formula (1), (2), (3) or its acid addition salt and a production process thereof wherein each of A and B is a C2-C8 alkylene, D is a single bond, —CO— or a C1-C6 alkylene, E is H, a lower alkyl or the like, m is 1 to 6, n is 0 to 6 and R1 is H, a lower alkyl or the like, 1 is 1 to 10 and G is H, —OH or the like and a skin cosmetic containing the same. It can exert excellent keratin layer softening effect continuously for a long period of time.Type: GrantFiled: November 6, 1997Date of Patent: February 13, 2001Assignee: Kao CorporationInventors: Minoru Nagai, Hiromitsu Kawada, Mayumi Tsuchiya, Seiji Yamasaki, Akira Yamamuro, Toshiya Ono
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Patent number: 6166189Abstract: A process is disclosed for the production of an alkyl glycoside stable in hue and odor, which comprises the steps of (1) reacting a sugar with alcohol to obtain an alkyl glycoside reaction product containing a higher alcohol, (2) decoloring the alkyl glycoside reaction product with hydrogen peroxide, (3) contacting the decolored alkyl glycoside with a metal/hydrogen complex represented by formula (I)M(BH.sub.4).sub.z (I)wherein M is an alkali metal, Ca, Zn or (CH.sub.3).sub.4 N; andz is 1 when M is an alkali metal or (CH.sub.3).sub.4 N and z is 2 when M is Ca or Zn; to substantially eliminate residual hydrogen peroxide, and then (4) decomposing the remaining metal/hydrogen complex with an acid.Type: GrantFiled: April 14, 1992Date of Patent: December 26, 2000Assignee: Kao CorporationInventors: Hiroki Sawada, Hiroshi Nagumo, Toyomi Koike, Akio Kimura, Akira Yamamuro
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Patent number: 5801202Abstract: Disclosed is an amine derivative represented by the following formula (1) or an acid addition salt thereof: ##STR1## wherein R.sup.1 represents a group ##STR2## a cyclopentyl group, cyclohexyl group, or a cycloheptyl group, R.sup.2 is a hydrogen atom or C1-C3 alkyl group which may be substituted by one or more hydroxyl groups, m is an integer falling in the range from 3 to 5 inclusive, and n is an integer falling in the range from 9 to 11 inclusive. Also, intermediates useful in the manufacture of the amine derivative (1), compositions for external application to the skin containing the amine derivative, and keratinization improvers containing the amine derivative as an active component are described. The compound (1) has excellent keratinization improving action, pigmentation preventing action, etc.Type: GrantFiled: May 30, 1997Date of Patent: September 1, 1998Assignee: Kao CoprorationInventors: Taketoshi Fujimori, Hiroshi Kusuoku, Akira Yamamuro, Yukihiro Yada, Kazuhiko Higuchi, Genji Imokawa, Naoki Kondo, Yoshinori Masukawa, Hajime Tokuda, Hisashi Tsujimura
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Patent number: 5753707Abstract: An amide derivative represented by the following formula (1): ##STR1## wherein R.sup.1 represents a C.sub.1-40 hydrocarbon; R.sup.2 represents a C.sub.1-6 alkylene; R.sup.3 represents H, OH or alkoxyl; R.sup.4 represents a C.sub.1-39 hydrocarbon; R.sup.5 represents ##STR2## with the proviso that when R.sup.5 represents ##STR3## R.sup.3 does not represent OH; and a composition of the amide derivative for topical application to human skin. The composition improves the barrier function of the stratum corneum, providing improvement and prevention of dermatitis, skin roughness, or similar disorders.Type: GrantFiled: September 6, 1996Date of Patent: May 19, 1998Assignee: Kao CorporationInventors: Masahide Hoshino, Hiroshi Kusuoku, Tadashi Hase, Atsuko Otsuka, Ichiro Tokimitsu, Akira Yamamuro, Yoshiya Sugai, Koji Yoshino, Youichi Arai, Shinichi Meguro
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Patent number: 5723133Abstract: A guanidine derivative represented by formula (1), (2), (3) or its acid addition salt and a production process thereof ##STR1## wherein each of A and B is a C.sub.2 -C.sub.8 alkylene, D is a single bond, --CO-- or a C.sub.1 -C.sub.5 alkylene, E is H, a lower alkyl or the like, m is 1 to 6, n is 0 to 6 and R.sup.1 is H, a lower alkyl or the like, l is 1 to 10 and G is H, --OH or the like and a skin cosmetic containing the same. It can exert excellent keratin layer softening effect continuously for a long period of time.Type: GrantFiled: July 26, 1995Date of Patent: March 3, 1998Assignee: Kao CorporationInventors: Minoru Nagai, Hiromitsu Kawada, Mayumi Tsuchiya, Seiji Yamasaki, Akira Yamamuro, Toshiya Ono
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Patent number: 5639733Abstract: Alkyl glycoside aqueous solutions, which satisfy the following conditions (a) and/or (b):(a) the solution is maintained at a pH value exceeding 7, and(b) the solution contains a water-soluble alcohol, are highly stable with respect to microbial activities, such as putrefaction and fungal growth, and are useful as surface active agents.Type: GrantFiled: November 14, 1994Date of Patent: June 17, 1997Assignee: Kao CorporationInventors: Toyomi Koike, Hiroshi Nagumo, Akira Yamamuro, Yukinaga Yokota
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Patent number: 5599483Abstract: A N-alkylcarbamylalkanol sulfate or a salt thereof represented by the following general formula (1-1), a process for producing the same, and a detergent composition containing the same, which is useful as a detergent for hair, body or tableware and has not only excellent foaming power and detergency but also high safety: ##STR1## wherein R.sup.1 represents a linear or branched alkyl or alkenyl group having 6 to 22 carbon atoms; R.sup.2 represents an alkyl or alkenyl group having 1 to 22 carbon atoms or a hydrogen atom: R.sup.3 represents a linear or branched alkylene group having 1 to 5 carbon atoms; R.sup.4 O represents an oxyalkylene group having 2 or 3 carbon atoms; Ma represents a hydrogen atom, an alkali metal atom, an ammonium group, etc.; and n represents a number between 0 and 20.Type: GrantFiled: October 11, 1995Date of Patent: February 4, 1997Assignee: Kao CorporationInventors: Hiromoto Mizushima, Masakatsu Takahashi, Akira Yamamuro, Takashi Matsuo, Kazuyuki Yahagi
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Patent number: 5130420Abstract: A process is described for the production of an alkyl glycoside which comprises distilling a higher alcohol in the presence of an alkaline substance, or washing a higher alcohol with an aqueous solution of an alkaline substance, and then reacting the higher alcohol with a sugar or a reaction product of a sugar and a lower alcohol. According to this process, an alkyl glycoside showing an excellent hue can be produced by repeatedly using unreacted alcohol recovered from the reaction mixture in the production of an alkyl glycoside.Type: GrantFiled: March 16, 1990Date of Patent: July 14, 1992Assignee: Kao CorporationInventors: Akira Yamamuro, Toyomi Koike, Hiroki Sawada, Akio Kimura
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Patent number: 5120885Abstract: A process for producing alcohols comprising catalytically reducing fats and oils or fatty acid esters with hydrogen in the presence of a catalyst for ester reduction is disclosed, wherein the starting oils are first treated at a temperature of from 50.degree. to 200.degree. C. in hydrogen gas or a mixed gas of hydrogen and an inert gas in the presence of a nickel catalyst to yield a sulfur content at not more than 0.6 ppm an acid value (KOH mg/g) of not more than 2. By use of the thus purified starting oils, the catalyst for ester reduction exhibits a prolonged duration.Type: GrantFiled: September 9, 1991Date of Patent: June 9, 1992Assignee: Kao CorporationInventors: Kiyoshi Tsukada, Yasuyuki Hattori, Hiroyuki Tamura, Akira Yamamuro, Kunizo Hashiba, Osamu Tabata
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Patent number: 5104981Abstract: A process is disclosed for the production of an alkyl glycoside excellent in hue, which comprises (1) reacting a sugar with alcohol to obtain an alkyl glycoside reaction product containing an unreacted higher alcohol, (2) reacting the resulting product with a metal/hydrogen complex represented by formula (I)M(BH.sub.4).sub.x (I)whereinM is an alkali metal, Ca, Zn, or (CH.sub.3).sub.4 N; and x is 1 when M is an alkali metal or (CH.sub.3).sub.4 N and x is 2 when M is Ca or Zn;(3) separating the resulting reaction mixture into the alkyl glycoside and the unreacted higher alcohol, and (4) decomposing the remaining metal/hydrogen complex with an acid.Type: GrantFiled: March 16, 1990Date of Patent: April 14, 1992Assignee: Kao CorporationInventors: Akira Yamamuro, Makoto Amau, Tadaaki Fujita, Kiyoshi Aimono, Akio Kimura
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Patent number: 4693845Abstract: Novel bornane-3-spiro-1'-cylopentane derivatives of the following formula (I) ##STR1## in which R.sub.1 and R.sub.2 are defined such that when R.sub.1 is a hydrogen atom, R.sub.2 is a hydroxyl group, or R.sub.1 and R.sub.2 are joined to form a ketone are obtained from camphor.The derivatives are synthesized in a simple process from an economical starting material, camphor. The derivatives have woody-note and can be widely used in perfumes, soaps, shampoos, hair rinses, cosmetics and the like.Type: GrantFiled: June 18, 1986Date of Patent: September 15, 1987Assignee: KAO CorporationInventors: Yoshiaki Fujikura, Akira Yamamuro, Motoki Nakajima