Patents by Inventor Toshihiko Kinsho
Toshihiko Kinsho 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: 7405000Abstract: Provided is a resin particle comprising a resin (a) and a filler (b) contained in the particle; the particle has a volume average particle diameter of from 0.1 to 300 ?m and a shape factor of from 110 to 300; the particle has an outer shell layer (S) comprising at least a portion of the filler (b); the layer (S) is at least 0.01 ?m thick and has a thickness that is ½ or less of the maximum inscribed circle radius of the particle cross section. When used as a toner resin, it is excellent in blade cleaning properties and wide in the fixation temperature range; when employed as a paint additive or a cosmetics additive, it is excellent in masking properties; when used as paper coating additive, it is excellent in ink retention; when utilized as an abrasive, it is excellent in abrasion.Type: GrantFiled: July 14, 2004Date of Patent: July 29, 2008Assignees: Sanyo Chemical Industries, Ltd, Ricoh Company, Ltd.Inventors: Tadao Takikawa, Toshihiko Kinsho, Hidetoshi Noda, Shuhei Yahiro, Yutaka Yoshida, Tomoyuki Ichikawa, Satoshi Mochizuki, Yasuaki Iwamoto, Hideki Sugiura
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Patent number: 7166403Abstract: A toner capable of making compatible a transferring property, a fixing property and a cleaning property and forming a high-precision image. The toner comprises a binder resin and a colorant and is characterized in that the average circularity of the toner is at least 0.95, a ratio (D/S) between the total projection area (S) and the contact area (D) of the toner is 15% to 40%, and the contact area (D) is a total contact area between the toner and an object surface. The toner has such a shape as to be able to contact a latent image carrier with a proper contact area, has a high transferring rate and can prevent transferring dust.Type: GrantFiled: June 24, 2005Date of Patent: January 23, 2007Assignee: Ricoh Company, Ltd.Inventors: Tomoyuki Ichikawa, Satoshi Mochizuki, Yasuaki Iwamoto, Hideki Sugiura, Tadao Takikawa, Toshihiko Kinsho, Hidetoshi Noda, Shuhei Yahiro
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Patent number: 7163999Abstract: A method for preparing a resin particle having a large surface area and a shape factor (SF-1) of 110 to 800, which comprises a step of applying a shear force to an aqueous dispersion having a viscosity of 300 to 100,000 mPa·s formed by adding a thickener to an aqueous dispersion containing resin particles, and a subsequent step of decreasing the viscosity of the aqueous dispersion to 200 mPa·s or less by adding a viscosity decreasing agent as necessary. Resin particles obtained by the method can be used as additives for paint, additives for coating materials, powder coatings, additives for cosmetics, resins for slush molding, spacers for use in manufacturing electronic components or devices, standard particles for electronic measuring instruments, toners for electrophotography, toners for electrostatic recording, toners for electrostatic printing, and hot-melt adhesives.Type: GrantFiled: June 17, 2003Date of Patent: January 16, 2007Assignee: Sanyo Chemical Industries, Ltd.Inventors: Kazuhito Kawakami, Hidetoshi Noda, Toshihiko Kinsho, Masayuki Hatanaka
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Patent number: 7122250Abstract: The invention is a composite resin particle useful as an additive for paints or coatings, powder coatings, cosmetic additives, slush molding resins, spacer for electronic part assembly, standard particles for electric measurement devices, toner, hot melt adhesive as well as other molding materials. Said composite resin particle comprises a resin microparticle (A) depositing on the surface of a resin particle (B) wherein the shape factor (SF-1) of said composite resin particle is 115 to 800. It is also a composite resin particle comprising a resin microparticle (A) depositing on the surface of a resin particle (B) wherein the acid vale of a resin (b) constituting the resin particle (B) is 5 to 100.Type: GrantFiled: April 30, 2004Date of Patent: October 17, 2006Assignee: Sanyo Chemical Industries, Inc.Inventors: Toshihiko Kinsho, Hidetoshi Noda, Kazuyuki Hirai
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Publication number: 20060165989Abstract: Provided is a resin particle comprising a resin (a) and a filler (b) contained in the particle; the particle has a volume average particle diameter of from 0.1 to 300 ?m and a shape factor of from 110 to 300; the particle has an outer shell layer (S) comprising at least a portion of the filler (b); the layer (S) is at least 0.01 ?m thick and has a thickness that is ½ or less of the maximum inscribed circle radius of the particle cross section. When used as a toner resin, it is excellent in blade cleaning properties and wide in the fixation temperature range; when employed as a paint additive or a cosmetics additive, it is excellent in masking properties; when used as paper coating additive, it is excellent in ink retention; when utilized as an abrasive, it is excellent in abrasion.Type: ApplicationFiled: July 14, 2004Publication date: July 27, 2006Applicants: Sanyo Chemical Industries, Ltd., Ricoh Company, Ltd.Inventors: Tadao Takikawa, Toshihiko Kinsho, Hidetoshi Noda, Shuhei Yahiro, Yutaka Yoshida, Tomoyuki Ichikawa, Satoshi Mochizuki, Yasuaki Iwamoto, Hideki Sugiura
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Patent number: 7005480Abstract: The present invention provides a method of producing an aqueous dispersion. A resin (b) or a solvent solution thereof, or a precursor (b0) of the resin (b) or a solvent solution thereof is dispersed in an aqueous dispersion of resin particles (A) composed of resin (a), and is caused the precursor (b0) to react where the precursor (b0) or a solvent solution thereof is used, to prepare resin particles (B) composed of said resin (b). Thereby, an aqueous dispersion (X1) of resin particles (C) having a structure such that the resin particle (A) adheres to the surface of the resin particle (B) is obtained.Type: GrantFiled: February 16, 2001Date of Patent: February 28, 2006Assignee: Sanyo Chemical Industries, Ltd.Inventors: Toshihiko Kinsho, Kazuyuki Hirai, Masataka Mitsumoto
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Publication number: 20050255399Abstract: A toner capable of making compatible a transferring property, a fixing property and a cleaning property and forming a high-precision image. The toner comprises a binder resin and a colorant and is characterized in that the average circularity of the toner is at least 0.95, a ratio (D/S) between the total projection area (S) and the contact area (D) of the toner is 15% to 40%, and the contact area (D) is a total contact area between the toner and an object surface. The toner has such a shape as to be able to contact a latent image carrier with a proper contact area, has a high transferring rate and can prevent transferring dust.Type: ApplicationFiled: June 24, 2005Publication date: November 17, 2005Inventors: Tomoyuki Ichikawa, Satoshi Mochizuki, Yasuaki Iwamoto, Hideki Sugiura, Tadao Takikawa, Toshihiko Kinsho, Hidetoshi Noda, Shuhei Yahiro
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Publication number: 20050165139Abstract: A method for preparing a resin particle having a large surface area and a shape factor (SF-1) of 110 to 800, which comprises a step of applying a shear force to an aqueous dispersion having a viscosity of 300 to 100,000 mPa·s formed by adding a thickener to an aqueous dispersion containing resin particles, and a subsequent step of decreasing the viscosity of the aqueous dispersion to 200 mPa·s or less by adding a viscosity decreasing agent as necessary. Resin particles obtained by the method can be used as additives for paint, additives for coating materials, powder coatings, additives for cosmetics, resins for slush molding, spacers for use in manufacturing electronic components or devices, standard particles for electronic measuring instruments, toners for electrophotography, toners for electrostatic recording, toners for electrostatic printing, and hot-melt adhesives.Type: ApplicationFiled: June 17, 2003Publication date: July 28, 2005Applicant: SANYO CHEMICAL INDUSTRIES, LTDInventors: Kazuhito Kawakami, Hidetoshi Noda, Toshihiko Kinsho, Masayuki Hatanaka
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Publication number: 20050031871Abstract: The invention is a composite resin particle useful as an additive for paints or coatings, powder coatings, cosmetic additives, slush molding resins, spacer for electronic part assembly, standard particles for electric measurement devices, toner, hot melt adhesive as well as other molding materials. Said composite resin particle comprises a resin microparticle (A) depositing on the surface of a resin particle (B) wherein the shape factor (SF-1) of said composite resin particle is 115 to 800. It is also a composite resin particle comprising a resin microparticle (A) depositing on the surface of a resin particle (B) wherein the acid vale of a resin (b) constituting the resin particle (B) is 5 to 100.Type: ApplicationFiled: April 30, 2004Publication date: February 10, 2005Inventors: Toshihiko Kinsho, Hidetoshi Noda, Kazuyuki Hirai
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Patent number: 6630534Abstract: Disclosed is a composition useful as a sealing or undercoating material for automobiles. The composition comprises fine particles (A) comprising polyurethane resin, a plasticizer (B) and fillers (C), wherein not less than 50% of (A) is spherical particles having a ratio of major axis/minor axis in the range of 1.0 to 1.5.Type: GrantFiled: March 31, 2000Date of Patent: October 7, 2003Assignees: Sanyo Chemical Industries, Ltd., Toyota Jidosha Kabushiki KaishaInventors: Keiji Tanaka, Toshihiko Kinsho, Takashi Yabuta, Keiichi Yokouchi, Takao Nomura
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Publication number: 20030125479Abstract: The present invention provides a method of producing an aqueous dispersion which comprisesType: ApplicationFiled: November 13, 2002Publication date: July 3, 2003Inventors: Toshihiko Kinsho, Kazuyuki Hirai, Masataka Mitsumoto
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Patent number: 6495653Abstract: It is an object of the present invention to provide a curable composition retaining curability even at a low temperature of −20 to 5° C. and having a low viscosity at such low temperature, the cured product of which is an artifact having excellent water resistance, chemical resistance, mechanical strength and other physical properties. The present invention is directed to a curable composition which comprises a hetero ring-containing compound (A) of the following general formula (1), a compound (B) having 2 or more electrophilic groups reactive with thiol or —S— groups per molecule, and a compound (C) having 2 or more nucleophilic groups per molecule: wherein n represents an integer of 1 to 10; X1, Y1 and Z1 each represents an oxygen or sulfur atom; R1 represents the residue of a cyclic ether group-containing compound (D) or a hydrogen atom; R2 represents a hydrocarbon group of 2 to 10 carbon atoms.Type: GrantFiled: December 8, 2000Date of Patent: December 17, 2002Assignee: Sanyo Chemical Industries, Ltd.Inventor: Toshihiko Kinsho
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Patent number: 6040398Abstract: An epoxy curing agent comprising a heterocycle-containing compound having a backbone chain selected from the group consisting of polyether, polyvinyl, polyester, polyamide, polycarbonate, and novolac chains and at least two heterocyclic groups of the following general formula (1) as side chains, and a one-component (type) epoxy resin composition comprising said epoxy curing agent and a polyepoxy compound, ##STR1## wherein R.sub.1 and R.sup.2 may be the same or different and each represents hydrogen, straight-chain or branched C.sub.1 to C.sub.6 alkyl or alkenyl, or C.sub.6 to C.sub.8 aryl; or R.sub.1 and R.sup.2, taken together with the adjacent carbon atom, represents C.sub.5 to C.sub.7 cycloalkyl; R.sup.3 represents C.sub.1 to C.sub.10 alkylene. The object is to provide the one-component (type) epoxy resin composition having fast-curing feature, an improved storage stability, and an improved degree of workability.Type: GrantFiled: September 2, 1998Date of Patent: March 21, 2000Assignee: Sanyo Chemical Industries Ltd.Inventors: Toshihiko Kinsho, Munekazu Satake, Tadakazu Miyazaki
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Patent number: 5837785Abstract: An epoxy curing agent comprising a heterocycle-containing compound having a backbone clain selected from the group consisting of polyether, polyvinyl, polyester, polyamide, polycarbonate, and novolac chains and at least two heterocyclic groups of the following general formula (1) as side chains, and a one-component (type) epoxy resin composition comprising said epoxy curing agent and a polyepoxy compound, ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and each represents hydrogen, straight-chain or branched C.sub.1 to C.sub.6 alkyl or alkenyl, or C.sub.6 to C.sub.8 aryl; or R.sup.1 and R.sup.2, taken together with the adjacent carbon atom, represents C.sub.5 to C.sub.7 cycloalkyl; R.sup.3 represents C.sub.1 to C.sub.10 alkylene. The object is to provide the one-component (type) epoxy resin composition having fast-curing feature, an improved storage stability, and an improved degree of workability.Type: GrantFiled: July 12, 1996Date of Patent: November 17, 1998Assignee: Sanyo Chemical Industries Ltd.Inventors: Toshihiko Kinsho, Munekazu Satake, Tadakazu Miyazaki