Patents by Inventor Toshifumi Shiroya
Toshifumi Shiroya 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: 11833234Abstract: The present invention relates to a composition in the form of an O/W emulsion, comprising: (a) at least one cationic polysaccharide; (b) at least one crosslinker having three or more acid groups or salt thereof; (c) at least one oil; and (d) water, wherein the amount of the (c) oil(s) in the composition is 50% by weight or more, preferably 60% by weight or more, and more preferably 70% by weight or more, relative to the total weight of the composition. The composition in the form of an O/W emulsion according to the present invention is stable. Also, a composition in the form of an O/W/O emulsion can be prepared by the composition in the form of an O/W emulsion according to the present invention.Type: GrantFiled: August 16, 2019Date of Patent: December 5, 2023Assignee: L'OrealInventors: Takehiko Kasai, Toshifumi Shiroya, Shoji Maruyama, Hidehiko Asanuma
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Patent number: 11826455Abstract: The present invention relates to a composition comprising (a) at least one cationic polysaccharide; (b) at least one crosslinker having three or more acid groups or salt thereof; and (c) at least one physiologically acceptable volatile medium, wherein the composition optionally comprises surfactant(s) in an amount of 1% by weight or less, preferably 0.5% by weight or less, and more preferably 0.3% by weight or less, relative to the total weight of the composition. The composition according to the present invention can provide a self-healing or self-repairing film.Type: GrantFiled: August 9, 2019Date of Patent: November 28, 2023Assignee: L'OrealInventors: Toshifumi Shiroya, Takehiko Kasai, Hidehiko Asanuma, Tomomi Hamazaki, Toru Koike
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Patent number: 11819564Abstract: The present invention relates to a composition, preferably a cosmetic composition, and more preferably a skin cosmetic composition, comprising: (a) at least one particle, comprising at least one cationic polymer and at least one anionic polymer, at least one cationic polymer and at least one amphoteric polymer, at least one anionic polymer and at least one amphoteric polymer, or at least one amphoteric polymer, and at least one non-polymeric acid having two or more pKa values or salt(s) thereof or at least one non-polymeric base having two or more pKb values or salt(s) thereof; (b) at least one oil; and (c) water. The composition according to the present invention is stable, and can have a variety of cosmetic functions. For example, the composition according to the present invention can prepare a film which can have cosmetic effects such as moisturizing due to the oil(s).Type: GrantFiled: June 8, 2018Date of Patent: November 21, 2023Assignee: L'OrealInventors: Toshifumi Shiroya, Hidehiko Asanuma, Takehiko Kasai
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Patent number: 11730682Abstract: The present invention relates to a cosmetic process which applies onto the skin a self-standing cosmetic sheet for the skin, comprising: at least one biocompatible and/or biodegradable hydrophobic polymer layer wherein the self-standing cosmetic sheet has a thickness of from 10 to 1000 nm, preferably from 30 to 500 nm, and more preferably from 50 to 300 nm. The cosmetic sheet according to the present invention may comprise at least one cosmetic active ingredient. The cosmetic sheet used in the present invention is very thin and not easily perceived on the skin; can be prepared with a variety of materials such as a biocompatible and/or biodegradable material; and can adhere well onto the skin without any adhesive layer so that it is less irritable or no irritable to the skin.Type: GrantFiled: February 15, 2018Date of Patent: August 22, 2023Assignee: L'OREALInventors: Toshifumi Shiroya, Anne Laure Bernard, Christophe Dumousseaux
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Patent number: 11642297Abstract: The present invention relates to a composition according to the present invention comprises: (a) at least one particle comprising at least one cationic polymer, at least one anionic polymer, and at least one hydrophilic or water-soluble UV filter; and (b) at least one physiologically acceptable volatile medium. The composition according to the present invention is stable, and can have a variety of cosmetic functions. For example, the composition according to the present invention can prepare a film which can have cosmetic effects such as UV filtering, as well as absorbing or adsorbing malodor, changing the appearance of a keratin substrate such as skin, changing the feel to the touch of the keratin substrate, and/or protecting the keratin substrate from, for example, dirt or pollutants.Type: GrantFiled: December 6, 2016Date of Patent: May 9, 2023Assignee: L'OrealInventors: Takehiko Kasai, Toshifumi Shiroya, Hidehiko Asanuma, Ritesh Sinha, Christophe Dumousseaux
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Publication number: 20230048170Abstract: The present invention relates to a composition comprising: (a) at least one cationic polysaccharide; (b) at least one antioxidant; and (c) water, wherein the (b) antioxidant has at least one negatively chargeable and/or negatively charged moiety selected from the group consisting of a sulfuric group, a sulfate group, a sulfonic group, a sulfonate group, a phosphoric group, a phosphate group, a phosphonic group, a phosphonate group, a phenolic hydroxyl group, a carboxylic group, and a carboxylate group. The composition according to the present invention can include a relatively larger amount of antioxidant.Type: ApplicationFiled: December 4, 2020Publication date: February 16, 2023Applicant: L'OrealInventors: Tatsushi ISOJIMA, Toshifumi SHIROYA, Cindy CHHUON, Kazuhiko MARUYAMA
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Publication number: 20230051904Abstract: The present invention relates to a composition comprising: (a) at least one particle comprising at least one cationic polymer and at least one anionic polymer, at least one cationic polymer and at least one amphoteric polymer, at least one anionic polymer and at least one amphoteric polymer, or at least one amphoteric polymer, and at least one non-polymeric acid having two or more pKa values or salt(s) thereof or at least one non-polymeric base having two or more pKb values or salt(s) thereof; and (b) water, wherein the anionic polymer is selected from hyaluronic acid and derivatives thereof, and the amphoteric polymer is selected from cationized hyaluronic acid and salts thereof. The composition according to the present invention is stable, and can have a variety of cosmetic functions. The stickiness of the composition according to the present invention can be reduced.Type: ApplicationFiled: December 4, 2020Publication date: February 16, 2023Applicant: L'OrealInventors: Toshifumi SHIROYA, Tatsushi ISOJIMA, Mariko YAMAMOTO, Takehiko KASAI, Kazuhiko MARUYAMA, Shinobu MITSUDA
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Publication number: 20220362128Abstract: The present invention relates to a composition comprising, in at least one physiologically acceptable volatile medium: (a) at least one cationic polysaccharide; (b) at least one crosslinker having three or more acid groups or a salt thereof; (c) at least one powder; and (d) at least one polyol, wherein the (c) powder is insoluble in the physiologically acceptable volatile medium. The composition can form a film including a DIC-gel and a powder wherein the distribution of the powder in the film can be more even or more uniform.Type: ApplicationFiled: June 2, 2020Publication date: November 17, 2022Applicant: L'OREALInventors: Tomomi Hamazaki, Toru Koike, Nozomi Takahashi, Takehiko Kasai, Tatsushi Isojima, Toshifumi Shiroya, Hidehiko Asanuma
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Patent number: 11452676Abstract: The present invention relates to a composition, preferably a cosmetic composition, and more preferably a skin cosmetic composition, comprising: (a) at least one particle, comprising at least one cationic polymer, at least one anionic polymer and at least one non-polymeric base having two or more pKb values or salt(s) thereof; and (b) at least one physiologically acceptable volatile medium. The composition according to the present invention is stable, and can have a variety of cosmetic functions.Type: GrantFiled: June 8, 2018Date of Patent: September 27, 2022Assignee: L'OrealInventors: Toshifumi Shiroya, Hidehiko Asanuma, Takehiko Kasai
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Patent number: 11389379Abstract: The present invention relates to a composition according to the present invention comprises: (a) at least one particle comprising at least one cationic polymer, at least one anionic polymer, and at least one non-polymeric acid having two or more pKa values or salt(s) thereof; and (b) at least one physiologically acceptable volatile medium. The composition according to the present invention is stable, and can have a variety of cosmetic functions. For example, the composition according to the present invention can prepare a film which can have cosmetic effects such as absorbing or adsorbing malodor, changing the appearance of a keratin substrate such as skin, changing the feel to the touch of the keratin substrate, and/or protecting the keratin substrate from, for example, dirt or pollutants.Type: GrantFiled: September 23, 2016Date of Patent: July 19, 2022Assignee: L'OrealInventors: Takehiko Kasai, Toshifumi Shiroya, Hidehiko Asanuma, Ritesh Sinha, Christophe Dumousseaux
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Publication number: 20220211588Abstract: The present invention relates to a multilayer UV filter particle, comprising: an odd number of alternating layers of high and low refractive index materials, wherein each layer has a refractive index that differs from that of adjacent layers by at least 0.2, the total number of layers is at least 9, and the particle does not contain a substrate. The particle according to the present invention can have a good UV filtering effect.Type: ApplicationFiled: May 7, 2020Publication date: July 7, 2022Inventors: Jun SASAI, Toshifumi SHIROYA
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Publication number: 20210299007Abstract: The present invention relates to a composition in the form of an O/W emulsion, comprising: (a) at least one cationic polysaccharide; (b) at least one crosslinker having three or more acid groups or salt thereof; (c) at least one oil; and (d) water, wherein the amount of the (c) oil(s) in the composition is 50% by weight or more, preferably 60% by weight or more, and more preferably 70% by weight or more, relative to the total weight of the composition. The composition in the form of an O/W emulsion according to the present invention is stable. Also, a composition in the form of an O/W/O emulsion can be prepared by the composition in the form of an O/W emulsion according to the present invention.Type: ApplicationFiled: August 16, 2019Publication date: September 30, 2021Applicant: L'OREALInventors: Takehiko Kasai, Toshifumi Shiroya, Shoji Maruyama, Hidehiko Asanuma
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Publication number: 20210196583Abstract: The present invention relates to a foaming composition comprising: (a) at least one cationic polysaccharide; (b) at least one crosslinker having three or more acid groups or salt thereof; (c) at least one oil; and (d) at least one physiologically acceptable volatile medium, wherein the amount of the (c) oil(s) in the composition is 10% by weight or more, preferably 15% by weight or more, and more preferably 20% by weight or more, relative to the total weight of the composition. The composition according to the present invention can form a foam which is stable over time.Type: ApplicationFiled: August 9, 2019Publication date: July 1, 2021Applicant: L'OREALInventors: Takehiko Kasai, Toshifumi Shiroya, Shoji Maruyama, Hidehiko Asanuma
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Publication number: 20210177725Abstract: The present invention relates to a composition comprising (a) at least one cationic polysaccharide; (b) at least one crosslinker having three or more acid groups or salt thereof; and (c) at least one physiologically acceptable volatile medium, wherein the composition optionally comprises surfactant(s) in an amount of 1% by weight or less, preferably 0.5% by weight or less, and more preferably 0.3% by weight or less, relative to the total weight of the composition. The composition according to the present invention can provide a self-healing or self-repairing film.Type: ApplicationFiled: August 9, 2019Publication date: June 17, 2021Applicant: L'OREALInventors: Toshifumi Shiroya, Takehiko Kasai, Hidehiko ASANUMA, Tomomi HAMAZAKI, Toru Koike
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Patent number: 11020338Abstract: The present invention relates to a composite particle comprising: at least one hydrophilic core particle; and a plurality of hydrophobic particles, wherein the surface of the hydrophilic core particle is substantially discontinuously covered by the hydrophobic particles. The novel composite particle according to the present invention can have surface active properties sufficient to prepare stable Pickering emulsions, and can maintain the surface active properties over a long period of time. The present invention also relates to a method for preparing the above composite particle.Type: GrantFiled: December 17, 2015Date of Patent: June 1, 2021Assignee: L'OREALInventors: Shinichi Matsufuji, Toshifumi Shiroya, Christophe Dumousseaux, Andres Cardozo Perez
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Publication number: 20200330363Abstract: The present invention relates to a composition, preferably a cosmetic composition, and more preferably a skin cosmetic composition, comprising: (a) at least one complex, comprising at least one cationic polymer and at least one anionic polymer, at least one cationic polymer and at least one amphoteric polymer, at least one anionic polymer and at least one amphoteric polymer, or at least one amphoteric polymer, and at least one non-polymeric acid having two or more pKa values or salt(s) thereof or at least one non-polymeric base having two or more pKb values or salt(s) thereof; (b) at least one oil; and (c) water, wherein the cationic polymer comprises at least one cationic cellulose polymer with at least one fatty chain comprising at least 10 carbon atoms, and if the (a) complex comprises at least one anionic polymer and at least one amphoteric polymer, or at least one amphoteric polymer, the (a) complex further comprises at least one cationic cellulose polymer with at least one fatty chain comprising at leasType: ApplicationFiled: November 20, 2018Publication date: October 22, 2020Applicant: L'OrealInventors: Toshifumi Shiroya, Hidehiko Asanuma, Takehiko Kasai
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Publication number: 20200163864Abstract: The present invention relates to a composition, preferably a cosmetic composition, and more preferably a skin cosmetic composition, comprising: (a) at least one particle, comprising at least one cationic polymer and at least one amphoteric polymer, at least one anionic polymer and at least one amphoteric polymer, or at least one amphoteric polymer, and at least one non-polymeric acid having two or more pKa values or salt(s) thereof or at least one non-polymeric base having two or more pKb values or salt(s) thereof; and (b) at least one physiologically acceptable volatile medium. The composition according to the present invention is stable, and can have a variety of cosmetic functions.Type: ApplicationFiled: June 8, 2018Publication date: May 28, 2020Applicant: L'OrealInventors: Toshifumi Shiroya, Hidehiko Asanuma, Takehiko Kasai
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Publication number: 20200163866Abstract: The present invention relates to a composition, preferably a cosmetic composition, and more preferably a skin cosmetic composition, comprising: (a) at least one particle, comprising at least one cationic polymer and at least one anionic polymer, at least one cationic polymer and at least one amphoteric polymer, at least one anionic polymer and at least one amphoteric polymer, or at least one amphoteric polymer, and at least one non-polymeric acid having two or more pKa values or salt(s) thereof or at least one non-polymeric base having two or more pKb values or salt(s) thereof; (b) at least one oil; and (c) water. The composition according to the present invention is stable, and can have a variety of cosmetic functions. For example, the composition according to the present invention can prepare a film which can have cosmetic effects such as moisturizing due to the oil(s).Type: ApplicationFiled: June 8, 2018Publication date: May 28, 2020Applicant: L'OrealInventors: Toshifumi Shiroya, Hidehiko Asanuma, Takehiko Kasai
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Publication number: 20200155426Abstract: The present invention relates to a composition, preferably a cosmetic composition, and more preferably a skin cosmetic composition, comprising: (a) at least one particle, comprising at least one cationic polymer, at least one anionic polymer and at least one non-polymeric base having two or more pKb values or salt(s) thereof; and (b) at least one physiologically acceptable volatile medium. The composition according to the present invention is stable, and can have a variety of cosmetic functions.Type: ApplicationFiled: June 8, 2018Publication date: May 21, 2020Applicant: L'OrealInventors: Toshifumi Shiroya, Hidehiko Asanuma, Takehiko Kasai
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Publication number: 20180369106Abstract: The present invention relates to a composition according to the present invention comprises: (a) at least one particle comprising at least one cationic polymer, at least one anionic polymer, and at least one hydrophilic or water-soluble UV filter; and (b) at least one physiologically acceptable volatile medium. The composition according to the present invention is stable, and can have a variety of cosmetic functions. For example, the composition according to the present invention can prepare a film which can have cosmetic effects such as UV filtering, as well as absorbing or adsorbing malodor, changing the appearance of a keratin substrate such as skin, changing the feel to the touch of the keratin substrate, and/or protecting the keratin substrate from, for example, dirt or pollutants.Type: ApplicationFiled: December 6, 2016Publication date: December 27, 2018Applicant: L'OrealInventors: Takehiko Kasai, Toshifumi Shiroya, Hidehiko Asanuma, Ritesh Sinha, Christophe Dumousseaux