Patents by Inventor Hidetoshi Fukuo
Hidetoshi Fukuo 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: 9683118Abstract: An oil-based pigment ink composition contains titanium dioxide pigment, mica pigment, dispersant, oil-soluble resin, and organic solvent, whose viscosity at a shear velocity of 76 (l/s) is 50 mPa-s or lower. The ink composition produces writing with sufficient covering property and legibility, does not form hard cakes, and can release ink in a stable manner from the tip of a writing tool.Type: GrantFiled: April 14, 2014Date of Patent: June 20, 2017Assignee: SAKURA COLOR PRODUCTS CORPORATIONInventors: Hidetoshi Fukuo, Masamitsu Takahashi, Ryotaro Kaba
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Publication number: 20160075893Abstract: An oil-based pigment ink composition contains titanium dioxide pigment, mica pigment, dispersant, oil-soluble resin, and organic solvent, whose viscosity at a shear velocity of 76 (l/s) is 50 mPa-s or lower. The ink composition produces writing with sufficient covering property and legibility, does not form hard cakes, and can release ink in a stable manner from the tip of a writing tool.Type: ApplicationFiled: April 14, 2014Publication date: March 17, 2016Applicant: SAKURA COLOR PRODUCTS CORPORATIONInventors: Hidetoshi FUKUO, Masamitsu TAKAHASHI, Ryotaro KABA
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Patent number: 8431632Abstract: The invention provides a crayon which comprises an alternative plasticizer in place of the conventional phthalate ester plasticizers and yet provides writings excellent in water resistance, the crayon comprising a colorant, a gelling agent, an organic solvent, a resin component, and a plasticizer, wherein the plasticizer is at least one selected from diisononyl adipate, acetyltributyl citrate, 1,2-cyclohexanedicarboxylic acid diisononyl, and alkylsulfonic acid phenyl ester and is contained in an amount of 1 to 20% by weight based on the crayon.Type: GrantFiled: July 9, 2008Date of Patent: April 30, 2013Assignee: Sakura Color Products CorporationInventors: Kotaro Sumitomo, Masamitsu Takahashi, Hidetoshi Fukuo
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Patent number: 8299143Abstract: The invention provides a process for producing a crayon having a desired hardness stably without poor gelation using a benzylidene sorbitol gelling agent together with the use of carbon black as a black pigment. The process comprises: dissolving and dispersing a resin component and carbon black having a pH of not less than 5.0 in an organic solvent, dissolving at least one gelling agent selected from the group consisting of dibenzylidene sorbitol, tribenzylidene sorbitol and derivatives thereof in the resultant under heating to prepare a raw material solution, pouring the raw material solution into a molding container, and cooling and gelling the raw material solution.Type: GrantFiled: August 29, 2007Date of Patent: October 30, 2012Assignee: Sakura Color Products CorporationInventors: Kotaro Sumitomo, Masamitsu Takahashi, Hidetoshi Fukuo
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Patent number: 8242190Abstract: The invention provides a process for producing a crayon having a desired hardness stably without poor gelation using a benzylidene sorbitol gelling agent together with the use of carbon black as a black pigment. The process comprises: dissolving and dispersing a resin component, carbon black having a pH of less than 5.0 and an organic amine in an organic solvent, dissolving at least one gelling agent selected from the group consisting of dibenzylidene sorbitol, tribenzylidene sorbitol and derivatives thereof in the resultant under heating to prepare a raw material solution, pouring the raw material solution into a molding container, and cooling and gelling the raw material solution.Type: GrantFiled: August 29, 2007Date of Patent: August 14, 2012Assignee: Sakura Color Products CorporationInventors: Kotaro Sumitomo, Masamitsu Takahashi, Hidetoshi Fukuo
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Patent number: 7943684Abstract: The invention provides a process for producing a crayon without poor gelation using a benzylidene sorbitol gelling agent together with the use of carbon black as a black pigment. The process comprises dissolving and dispersing carbon black and a resin component in an organic solvent, dissolving at least one gelling agent selected from the group consisting of dibenzylidene sorbitol, tribenzylidene sorbitol and derivatives thereof in the resultant under heating, pouring the obtained raw material solution into a molding container, and then cooling and solidifying the solution, wherein carbon black having an average particle diameter of primary particles of 20 to 100 nm is used as the carbon black.Type: GrantFiled: July 9, 2007Date of Patent: May 17, 2011Assignee: Sakura Color Products CorporationInventors: Kotaro Sumitomo, Masamitsu Takahashi, Hidetoshi Fukuo
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Publication number: 20100273914Abstract: The invention provides a crayon which comprises an alternative plasticizer in place of the conventional phthalate ester plasticizers and yet provides writings excellent in water resistance, the crayon comprising a colorant, a gelling agent, an organic solvent, a resin component, and a plasticizer, wherein the plasticizer is at least one selected from diisononyl adipate, acetyltributyl citrate, 1,2-cyclohexanedicarboxylic acid diisononyl, and alkylsulfonic acid phenyl ester and is contained in an amount of 1 to 20% by weight based on the crayon.Type: ApplicationFiled: July 9, 2008Publication date: October 28, 2010Applicant: SAKURA COLOR PRODUCTS CORPORATIONInventors: Kotaro Sumitomo, Masamitsu Takahashi, Hidetoshi Fukuo
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Publication number: 20100016471Abstract: The invention provides a process for producing a crayon having a desired hardness stably without poor gelation using a benzylidene sorbitol gelling agent together with the use of carbon black as a black pigment. The process comprises: dissolving and dispersing a resin component, carbon black having a pH of less than 5.0 and an organic amine in an organic solvent, dissolving at least one gelling agent selected from the group consisting of dibenzylidene sorbitol, tribenzylidene sorbitol and derivatives thereof in the resultant under heating to prepare a raw material solution, pouring the raw material solution into a molding container, and cooling and gelling the raw material solution.Type: ApplicationFiled: August 29, 2007Publication date: January 21, 2010Applicant: Sakura Color Products CorporationInventors: Kotaro Sumitomo, Masamitsu Takahashi, Hidetoshi Fukuo
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Publication number: 20090326096Abstract: The invention provides a process for producing a crayon having a desired hardness stably without poor gelation using a benzylidene sorbitol gelling agent together with the use of carbon black as a black pigment. The process comprises: dissolving and dispersing a resin component and carbon black having a pH of not less than 5.0 in an organic solvent, dissolving at least one gelling agent selected from the group consisting of dibenzylidene sorbitol, tribenzylidene sorbitol and derivatives thereof in the resultant under heating to prepare a raw material solution, pouring the raw material solution into a molding container, and cooling and gelling the raw material solution.Type: ApplicationFiled: August 29, 2007Publication date: December 31, 2009Applicant: Sakura Color Products CorporationInventors: Kotaro Sumitomo, Masamitsu Takahashi, Hidetoshi Fukuo
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Publication number: 20090247668Abstract: The invention provides a process for producing a crayon without poor gelation using a benzylidene sorbitol gelling agent together with the use of carbon black as a black pigment. The process comprises dissolving and dispersing carbon black and a resin component in an organic solvent, dissolving at least one gelling agent selected from the group consisting of dibenzylidene sorbitol, tribenzylidene sorbitol and derivatives thereof in the resultant under heating, pouring the obtained raw material solution into a molding container, and then cooling and solidifying the solution, wherein carbon black having an average particle diameter of primary particles of 20 to 100 nm is used as the carbon black.Type: ApplicationFiled: July 9, 2007Publication date: October 1, 2009Inventors: Kotaro Sumitomo, Masamitsu Takahashi, Hidetoshi Fukuo
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Publication number: 20090209678Abstract: The invention provides a crayon having excellent feel when writing while having high gel hardness. The crayon comprises a colorant, a gelling agent, an organic solvent and a resin component, wherein the gelling agent is at least one selected from the group consisting of dibenzylidene sorbitol, tribenzylidene sorbitol and derivatives thereof, and the resin component comprises a combination of polyvinyl butyral resin having an average degree of polymerization of less than 350 and polyvinyl butyral resin having an average degree of polymerization of 350 or more.Type: ApplicationFiled: July 9, 2007Publication date: August 20, 2009Applicant: SAKURA COLOR PRODUCTS CORPORATIONInventors: Kotaro Sumitomo, Masamitsu Takahashi, Hidetoshi Fukuo
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Patent number: 7485406Abstract: The invention provides a photostorage solid drawing medium comprising a solvent, a resin soluble in the solvent, a photostorage pigment and a gelling agent, wherein the photostorage pigment comprises a long afterglow fluorescent substance comprising an alkaline earth aluminosilicate as a matrix activated with a rare earth element wherein the alkaline earth element is at least one selected from the group consisting of strontium, calcium, magnesium and barium. The solvent used is a polar solvent, particularly a mixture of water and a water-soluble organic solvent, or at least one alcoholic solvent selected from the group consisting of glycols, glycol ethers, glycol ether esters and monovalent alcohols.Type: GrantFiled: April 7, 2006Date of Patent: February 3, 2009Assignee: Sakura Color Products CorporationInventors: Hidetoshi Fukuo, Masamitsu Takahashi, Kotaro Sumitomo
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Patent number: 7396400Abstract: A water base erasable ink composition for use in marking pens which comprises 0.05-20% by weight of a colorant and 1-20% by weight of an oily material which is nonvolatile at normal temperatures (25° C.) and is dispersed in water, wherein the oily material has a viscosity of 5-40 mPa·s at 20° C. and is dispersed in water in the form of emulsion, and wherein the colorant is dispersed in the water with the aid of a polyvinyl alcohol resin as a dispersing agent which has a saponification degree of 70-85 mol % and of which aqueous solution of 4% concentration has a viscosity of 2-30 mPa·s at 20° C. in a weight ratio of the resin to the colorant of 0.5 to 5 and in an amount of 1 to 10% by weight based on the ink composition.Type: GrantFiled: January 14, 2004Date of Patent: July 8, 2008Assignee: Sakura Color Products CorporationInventors: Keiko Nakamura, Hidetoshi Fukuo, Jiro Nakagawa
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Publication number: 20080155886Abstract: An insect repellent device and a method for manufacturing the same, the insect repellent device containing an active ingredient being volatilizable at normal temperature. An insect repellent device adapted to volatilize an active ingredient contained in an insect controlling agent by waving motion includes a frame and a face-forming member, which is fixed to the frame. The face-forming member has on its entire surface a coating layer formed by surface treatment such as varnishing. The coating layer holds the insect controlling agent containing the active ingredient being volatilizable at normal temperature. The ingredient volatilizes from the coating layer, thereby exerting an effect of an insect-repellent. The coating layer is formed by the surface treatment using a surface treatment agent containing the insect controlling agent, which has been prepared by adding the insect controlling agent to a surface treatment agent.Type: ApplicationFiled: February 17, 2006Publication date: July 3, 2008Inventors: Norimasa Okuda, Hidetoshi Fukuo, Masahiro Yasunaga, Makoto Hirotani, Tomonori Iwasaki
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Patent number: 7384459Abstract: The invention provides a crayon comprising an organic solvent, a resin soluble in the organic solvent, a coloring agent, a gelling agent and an interferential pearl luster pigment. The crayon provides a metallic or pearly coating film, and has characteristics such that the color tone of the coating film varies with an angle for viewing the coating film, namely, a visual angle for the coating film. Therefore, for example, when applied to a flaw caused in metallic or pearly coating of automobiles, the crayon is adapted to such coating of automobiles to form an integrated coating film, so that it is suitably used for repairing such a flaw.Type: GrantFiled: July 18, 2005Date of Patent: June 10, 2008Assignee: Sakura Color Products CorporationInventors: Hidetoshi Fukuo, Hirokazu Matsuda
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Patent number: 7297732Abstract: The invention has for its primary object to provide a solid composition having excellent wet-surface writing properties and high safety. The object is accomplished by the provision of a solid composition characterized by its comprising a colorant, a gelation agent, a resin component and at least two kinds of solvents, each of the resins having the following attribute a) or b): a) the solvent has an HLB value (X) of X?6.5 or b) the solvent has an HLB value (X) and a solubility parameter value (Y) satisfying the relation of Y?18?X (on condition that 6.5<X, 0<Y).Type: GrantFiled: March 12, 2001Date of Patent: November 20, 2007Assignee: Sakura Color Products CorporationInventors: Akiko Shirota, Hidetoshi Fukuo
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Patent number: 7291210Abstract: Disclosed herein is a first solid drawing material comprising water, a coloring agent, a solidifying agent that is a fatty acid alkali metal salt, and an O/W type emulsion of a separating agent that is an oily material which hardly volatilizes at room temperature. The first solid drawing material preferably contains silicone oil. A second solid drawing material is also disclosed, which comprises an organic solvent, a coloring agent, a solidifying agent that is at least one selected from the group consisting of dibenzylidene sorbitol, tribenylidene sorbitol, and derivatives thereof, a separating agent that is an oily material which hardly volatilizes at room temperature, and a resin soluble in the organic solvent. In these solid drawing materials, the separating agent is evenly dispersed, and therefore they have stable drawing properties and erasability.Type: GrantFiled: January 28, 2005Date of Patent: November 6, 2007Assignee: Sakura Color Products CorporationInventors: Keiko Nakamura, Kotaro Sumitomo, Hidetoshi Fukuo
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Patent number: 7208036Abstract: A central core type marking pen which has an ink storage portion of a central core and a pen tip connected thereto, wherein the central core contains a water-based pigment-containing ink composition which contains a thickening agent and exhibits, at 20° C., a viscosity of not less than 45 mPa·s and not greater than 12 mPa·s when a stress of 0.01 and a stress of 10 Pa are applied, respectively.Type: GrantFiled: July 1, 2002Date of Patent: April 24, 2007Assignee: Sakura Color Products CorporationInventors: Hidetoshi Fukuo, Naoshi Murata, Makoto Hirotani, Tomohiro Sawa
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Publication number: 20060210924Abstract: The invention provides a photostorage solid drawing medium comprising a solvent, a resin soluble in the solvent, a photostorage pigment and a gelling agent, wherein the photostorage pigment comprises a long afterglow fluorescent substance comprising an alkaline earth aluminosilicate as a matrix activated with a rare earth element wherein the alkaline earth element is at least one selected from the group consisting of strontium, calcium, magnesium and barium. The solvent used is a polar solvent, particularly a mixture of water and a water-soluble organic solvent, or at least one alcoholic solvent selected from the group consisting of glycols, glycol ethers, glycol ether esters and monovalent alcohols.Type: ApplicationFiled: April 7, 2006Publication date: September 21, 2006Inventors: Hidetoshi Fukuo, Masamitsu Takahashi, Kotaro Sumitomo
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Publication number: 20060062906Abstract: The invention provides a crayon comprising an organic solvent, a resin soluble in the organic solvent, a coloring agent, a gelling agent and an interferential pearl luster pigment. The crayon provides a metallic or pearly coating film, and has characteristics such that the color tone of the coating film varies with an angle for viewing the coating film, namely, a visual angle for the coating film. Therefore, for example, when applied to a flaw caused in metallic or pearly coating of automobiles, the crayon is adapted to such coating of automobiles to form an integrated coating film, so that it is suitably used for repairing such a flaw.Type: ApplicationFiled: July 18, 2005Publication date: March 23, 2006Inventors: Hidetoshi Fukuo, Hirokazu Matsuda