Patents Assigned to Buncho Corporation
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Patent number: 7547355Abstract: A solid drawing material containing a gel-forming substance of an alkali metal salt or an ammonium salt of an aliphatic carboxylic acid having 8 to 36 carbon atoms, an alkoxylated nitrogen-containing compound, a reduced starch saccharide, and a coloring agent. The solid drawing material which is in the form of a stick features a large strength, a small drawing resistance, is less subject to be collapsed or broken, produces little shavings while drawing, makes it possible to favorably form a drawing even on smooth surfaces such as windowpanes, and of which the traces after drawn can be easily wiped out with a wet cloth.Type: GrantFiled: September 11, 2006Date of Patent: June 16, 2009Assignee: Buncho CorporationInventors: Koji Seki, Jung Han Sin
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Patent number: 6673138Abstract: A multi-color crayon or oil pastel which features excellent drawing property, vividness of color and intimate adhesion of multi-color picture in combination, and a method of preparing the same. The multi-color crayon or oil pastel comprises a continuous matrix of a crayon or oil pastel material and a plurality of kinds of granular coloring phases dispersed in the matrix, the granular coloring phases being formed of a collapsible granular material which includes a coloring matter of a hue different from that of the continuous matrix, a body, and a water-soluble or solvent-soluble high molecular material or a water-swelling clay mineral (e.g., bentonite).Type: GrantFiled: March 13, 2002Date of Patent: January 6, 2004Assignees: Buncho Corporation, Dong-A Pencel Co., Ltd.Inventors: Koji Seki, Yoshimi Kano
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Patent number: 6602332Abstract: A solid glitter marker comprising a gel-forming material that contains (A) at least one kind of gelling agent selected from the group consisting of a dibenzylidene sorbitol, derivatives thereof, tribenzylidene sorbitol and derivatives thereof, (B) water, (C) a water-miscible organic solvent, (D) a high0molecular adhesive and (E) a glitter, the gel-forming material having a bending strength under JIS S-6026 of 160 to 700 g and a crushing strength which is not larger than 10 times as large as the bending strength.Type: GrantFiled: June 11, 2001Date of Patent: August 5, 2003Assignee: Buncho CorporationInventor: Koji Seki
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Publication number: 20020195021Abstract: A multi-color crayon or oil pastel which features excellent drawing property, vividness of color and intimate adhesion of multi-color picture in combination, and a method of preparing the same. The multi-color crayon or oil pastel comprises a continuous matrix of a crayon or oil pastel material and a plurality of kinds of granular coloring phases dispersed in the matrix, the granular coloring phases being formed of a collapsible granular material which includes a coloring matter of a hue different from that of the continuous matrix, a body, and a water-soluble or solvent-soluble high molecular material or a water-swelling clay mineral (e.g., bentonite).Type: ApplicationFiled: March 13, 2002Publication date: December 26, 2002Applicant: Buncho CorporationInventors: Koji Seki, Yoshimi Kano
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Patent number: 6042940Abstract: A solid adhesive having adhesive resins, benzylidene sorbitol, isothyazoline preservatives, organic solvents, and about 25-60% water, the components being balanced such that the solid adhesive has good formability or shapability. A stick-shaped solid adhesive product made from the solid adhesive has a unique combination of shape-maintainability, bending strength, and crush strength.Type: GrantFiled: November 12, 1997Date of Patent: March 28, 2000Assignees: Buncho Corporation, Kotobuki & Co., Ltd.Inventors: Yoshimi Kano, Koji Seki, Atsushi Kaneko
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Patent number: 5725642Abstract: A solid painting material comprises an aliphatic carboxylic acid salt having 8 to 36 carbon atoms as a gel-forming substance, 1 to 40% by weight of a coloring agent, a nonionic surfactant and 0 to 40% by weight of water. The painting material may further comprise a glycolic solvent or may substantially free of water. The painting material can prevent, to the utmost, the deterioration of the quality, while maintaining its painting and fixing properties and softness of a gel as a constituent thereof.Type: GrantFiled: April 19, 1996Date of Patent: March 10, 1998Assignees: Buncho Corporation, Kotobuki & Co., Ltd.Inventors: Yoshimi Kano, Koji Seki
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Patent number: 5236494Abstract: A solid painting material comprises an alkali metal or ammonium salt of an aliphatic carboxylic acid having 8 to 36 carbon atoms as a gel-forming agent, 1 to 70% by weight of a coloring agent, 1 to 20% by weight of hydrophobic silica and 0.1 to 30% by weight of a water-soluble resin, wherein the amounts are based on the total weight of the solid painting material. The solid painting material has good painting properties and fixing ability as well as painting properties in overlap-painting. Further, if the solid painting material comprises a white pigment as a coloring agent, it can be used as a correcting agent as well.Type: GrantFiled: September 13, 1991Date of Patent: August 17, 1993Assignees: Buncho Corporation, Kotobuki & Co., Ltd.Inventor: Yoshimi Kano
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Patent number: 4936699Abstract: A toy accessory has a plastic accessory base having plural engaging parts. At least two different ornamental parts made of a composition for writing which contains a polyolefin are attached to the base. The ornamental parts are simultaneously detachably engaged with the base via the plural engaging parts.Type: GrantFiled: December 16, 1988Date of Patent: June 26, 1990Assignee: Buncho CorporationInventor: Masamichi Yoshida
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Patent number: 4918130Abstract: An eraser comprises a styrene thermoplastic elastomer as a matrix with a hydrocarbon resin and a polyolefin included therein. The styrene thermoplastic elastomer is selected from the group which consists of styrene-butadiene copolymers, styrene-isoprene copolymers, styrene-ethylene-butylene copolymers and styrene-ethylene-propylene copolymers, and the hydrocarbon is a terpene resin or hydrogenated terpene resin, and the polyolefin is polyethylene or polypropylene.Type: GrantFiled: December 9, 1988Date of Patent: April 17, 1990Assignee: Buncho CorporationInventors: Yosimi Kano, Koji Seki, Ryoichi Seki
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Patent number: 4768987Abstract: A toy automobile equipped with a running device, has a body which can be used to write characters and pictures on paper.The body of the toy automobile is formed of a composition for writing which contains 25 to 80% by weight of polyolefin, 5 to 60% by weight of wax and the balance of a coloring agent.Type: GrantFiled: May 27, 1987Date of Patent: September 6, 1988Assignee: Buncho CorporationInventors: Jiro Usui, Koji Seki, Yosimi Kano
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Patent number: D316730Type: GrantFiled: January 29, 1988Date of Patent: May 7, 1991Assignee: Buncho CorporationInventor: Masamichi Yoshida