Patents by Inventor Yukio Zenitani
Yukio Zenitani 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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Publication number: 20070125568Abstract: A water swelling water stop material comprised of a water permeable sheet, characterized in that water absorbent resin particles (A) are enclosed therein so that the water stop material upon water absorption and swelling has the configuration of polyhedron (B). The water stop material is thin to thereby facilitate storage thereof and is lightweight to thereby render carry thereof easy. The polyhedron (B) is so constructed that upon water absorption and swelling, at least two faces are planar. When the polyhedron (B) is formed into a rectangular solid or cube, even if multiple polyhedrons (B) are piled one upon another, they are stable and are resistant to collapse even under the influence of a a large amount of water. When polyhedrons (B) of the same configuration are piled one upon another, any gaps between water stop materials are slight so as to inhibit water leakage through the gaps.Type: ApplicationFiled: January 27, 2005Publication date: June 7, 2007Inventors: Hiroyuki Kida, Yukio Zenitani
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Patent number: 6667133Abstract: A gelating agent for an alkaline cell is a cross-linked polymer (A) comprising (meth)acrylic acid and/or its alkali metal salt as a main constituent monomer unit and obtained by an aqueous solution polymerization or a reversed phase suspension polymerization and satisfies the following required conditions (1), (2). The gelating agent has good draining property, satisfactorily high speed charging property of the alkaline electrolytic solution and is therefore effective to produce cells with little unevenness of the charging amount of the electrolytic solution and having uniform quality by mass production and an alkaline cell using the gelating agent is provided with durable discharge time and remarkably excellent impact resistance for a long duration.Type: GrantFiled: August 9, 2001Date of Patent: December 23, 2003Assignee: Sanyo Chemical Industries, Ltd.Inventors: Takashi Sumiya, Masami Koike, Yukio Zenitani
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Patent number: 6136046Abstract: An interior base material is obtained by a method comprising a step of treating with a treating agent which comprises (A) a water-insoluble water-absorbent resin having a water absorbency to pure water for 50 to 1,000 ml/g and a particle size of 0.1 to 100 .mu.m, (B) a polyoxyalkylene nonionic surfactant and/or an anionic surfactant, and (C) a solvent having the boiling point of 50 to 250.degree. C. A process for printing the thus-treated interior base material comprises applying a dye ink having a viscosity of 1 to 100 cps by an ink-jet method, or applying a textile printing dye paste having a viscosity of 100 to 10,000 cps by a textile printing method followed by a heat-color developing treatment.Type: GrantFiled: June 7, 1999Date of Patent: October 24, 2000Assignee: Sanyo Chemical Industries, Ltd.Inventors: Akira Fukunishi, Yukio Zenitani
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Patent number: 5958547Abstract: An interior base material is obtained by a method comprising a step of treating with a treating agent which comprises (A) a water-insoluble water-absorbent resin having a water absorbency to pure water for 50 to 1,000 ml/g and a particle size of 0.1 to 100 .mu.m, (B) a polyoxyalkylene nonionic surfactant and/or an anionic surfactant, and (C) a solvent having the boiling point of 50 to 250.degree. C. A process for printing the thus-treated interior base material comprises applying a dye ink having a viscosity of 1 to 100 cps by an ink-jet method, or applying a textile printing dye paste having a viscosity of 100 to 10,000 cps by a textile printing method followed by a heat-color developing treatment.Type: GrantFiled: August 29, 1995Date of Patent: September 28, 1999Assignee: Sanyo Chemical Industries, Ltd.Inventors: Akira Fukunishi, Yukio Zenitani
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Patent number: 5904028Abstract: A diffusing device containing a fragrance or deodorant material includes a gel of a water swellable/water absorbing resin carrying the fragrance and/or deodorant components. The fragrance or deodorant release device can be readily produced on an industrial scale, is easy for a user to handle, and employs a water swellable/water absorbing resin. The gel is produced by enclosing a water swellable/water absorbing resin in a water resistant container, such as a packet, having a water permeable portion and immersing the packet into an aqueous medium containing the fragrance and/or deodorant components whereby the resin absorbs the fragrance and/or deodorant components.Type: GrantFiled: October 14, 1997Date of Patent: May 18, 1999Assignee: Sanyo Chemical Industries, Ltd.Inventors: Yoji Fujiura, Yukio Zenitani
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Patent number: 5838863Abstract: This invention relates to a cable whose inner opening space has been sealed with a polyurethane resin formed with a polyurethane resin-forming sealing material comprising components (A) and (B). (A): a component comprising a dispersion (1) of a water-insoluble water absorbent resin (D) or its hydrogel in a polyol (C), wherein said resin (D) is formed by polymerizing in the polyol (C) a water soluble monomer or its precursor and crosslinking agent and/or polysaccharide; and (B): a component comprising an organic polyisocyanate (2); and sealing process of the same. This invention provides a cables having an excellent water preventing property without the risk of falling-off of the sealing material at the time of cable connection.Type: GrantFiled: February 4, 1997Date of Patent: November 17, 1998Assignee: Sanyo Chemical Industries, Ltd.Inventors: Yoji Fujiura, Yukio Zenitani, Masami Koike
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Patent number: 5724915Abstract: A material and a method for preparing the same for treating excretions of pet animals comprising: 100 parts by weight of substrate (A) selected from an inorganic powder, short organic fibers, crushed cellulose, or granulated forms thereof coated with from 5-300 parts by weight of a water-absorbent resin/fiber composite (B), the composite (B) being a mixture of a water-absorbent resin fine powder, a fibrous substance and optionally a hydrophilic thermoplastic substance.Type: GrantFiled: July 5, 1996Date of Patent: March 10, 1998Assignees: Sanyo Chemical Industries, Ltd., Uni-Charm CorporationInventors: Kengo Ochi, Yuko Kawasaki, Takashi Sumiya, Yukio Zenitani
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Patent number: 5664523Abstract: A material for treating excretions of pet animals which is obtainable by combining pulp (A), inorganic substance (B), guar gum (C) and optionally water-absorbent resin (D) to form guranules. The weight ratios of (A) to (B) to (C) to (D) is 15-55:15-55:5-40: 5-45.The treating material is capable of absorbing liquids from excretions quickly, forming into clumps when absorbing liquid and maintaining the shape of the clump even when handled for removal.Type: GrantFiled: June 7, 1995Date of Patent: September 9, 1997Assignee: Sanyo Chemical Industries, Ltd.Inventors: Kengo Ochi, Noriyuki Kimura, Yukio Zenitani, Masami Koike, Yoji Fujiura
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Patent number: 5631071Abstract: The present invention relates to an interior base material suitable for a pigment ink printing process on which an organic-solvent-soluble synthetic resin (A) and a water insoluble-water absorbing resin having water absorption ability against pure water of 50 to 1,000 ml/g (B) are applied, the interior base material having a printed image with a pigment ink. The invention further relates to a method of printing an interior base material comprising the steps of, applying 0.01 to 50 weight percent with respect to the base material of each of an organic-solvent-soluble synthetic resin (A) and a water insoluble-water absorbing resin having water absorption ability to pure water of 50 to 1,000 ml/g (B), applying a pigment ink having viscosity of 5 to 10,000 cps by ink-jet printing or gravure printing, and drying.This invention enables printing with excellent sharpness, uniformity to the deep part of the interior base material, and excellent build up.Type: GrantFiled: May 8, 1995Date of Patent: May 20, 1997Assignee: Sanyo Chemical Industries, Ltd.Inventors: Akira Fukunishi, Yukio Zenitani