公开(公告)号：US20230048170A1

公开(公告)日：2023-02-16

申请号：US17785028

申请日：2020-12-04

Applicant: L'Oreal

Inventor： Tatsushi ISOJIMA ,  Toshifumi SHIROYA ,  Cindy CHHUON ,  Kazuhiko MARUYAMA

IPC: A61K8/60 ,  A61K8/81 ,  A61K8/73 ,  A61K8/06 ,  A61Q19/08 ,  A61K8/02

Abstract: 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.

公开(公告)号：US20230051904A1

公开(公告)日：2023-02-16

申请号：US17785019

申请日：2020-12-04

Applicant: L'Oreal

Inventor： Toshifumi SHIROYA ,  Tatsushi ISOJIMA ,  Mariko YAMAMOTO ,  Takehiko KASAI ,  Kazuhiko MARUYAMA ,  Shinobu MITSUDA

IPC: A61K8/73 ,  A61Q19/00 ,  A61K8/64 ,  A61K8/34 ,  A61K8/55

Abstract: 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.

公开(公告)号：US20250064703A1

公开(公告)日：2025-02-27

申请号：US18720329

申请日：2022-12-06

Applicant: L'OREAL

Inventor： Shinsuke OKUDA ,  Toshifumi SHIROYA ,  Hidehiko ASANUMA

IPC: A61K8/49 ,  A61K8/365 ,  A61K8/67 ,  A61K8/73 ,  A61Q19/08

Abstract: A composition contains: (a) at least one polyphenol; (b) at least one first cationic polymer with a molecular weight of from 5,000 to 450,000, preferably from 10,000 to 350,000, and more preferably from 50,000 to 250, 000, selected from chitosans; (c) at least one organic compound selected from the group consisting of ascorbic acid, gluconolactone, gluconic acid, glycolic acid, and mixtures thereof; and (d) water. The pH of the composition is from 3.0 to 5.0. The (a) polyphenol can be solubilized in the composition.

公开(公告)号：US20220211588A1

公开(公告)日：2022-07-07

申请号：US17609531

申请日：2020-05-07

Applicant: L'OREAL

Inventor： Jun SASAI ,  Toshifumi SHIROYA

IPC: A61K8/02 ,  A61K8/25 ,  A61K8/29 ,  A61Q17/04

Abstract: 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.

公开(公告)号：US20180235849A1

公开(公告)日：2018-08-23

申请号：US15897650

申请日：2018-02-15

Applicant: L'Oreal

Inventor： Toshifumi SHIROYA ,  Anne Laure BERNARD ,  Christophe DUMOUSSEAUX

IPC: A61K8/02 ,  A61K8/81 ,  A61K8/67 ,  A61Q19/02 ,  A61K8/73 ,  A61K8/85 ,  A61Q15/00 ,  A61Q19/08 ,  A61Q19/00 ,  A61Q17/00

CPC classification number: A61K8/02 ,  A61K8/0208 ,  A61K8/676 ,  A61K8/733 ,  A61K8/736 ,  A61K8/738 ,  A61K8/8135 ,  A61K8/85 ,  A61Q15/00 ,  A61Q17/00 ,  A61Q19/00 ,  A61Q19/02 ,  A61Q19/08

Abstract: 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.

公开(公告)号：US20170319458A1

公开(公告)日：2017-11-09

申请号：US15536165

申请日：2015-12-17

Applicant: L'OREAL

Inventor： Shinichi MATSUFUJI ,  Toshifumi SHIROYA ,  Christophe DUMOUSSEAUX ,  Andres CARDOZO PEREZ

IPC: A61K8/81 ,  A61K8/29 ,  A61K8/06 ,  C08L33/12 ,  A61Q19/00 ,  C08L1/02 ,  A61K8/11 ,  A61K8/73

CPC classification number: A61K8/8152 ,  A61K8/0266 ,  A61K8/062 ,  A61K8/11 ,  A61K8/29 ,  A61K8/731 ,  A61K8/8117 ,  A61K8/8147 ,  A61K2800/262 ,  A61K2800/412 ,  A61K2800/594 ,  A61K2800/614 ,  A61K2800/624 ,  A61K2800/651 ,  A61K2800/654 ,  A61Q1/00 ,  A61Q19/00 ,  C08L1/02 ,  C08L33/12 ,  C08L2207/53

Abstract: 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.