Patents by Inventor Toyokazu Yamada
Toyokazu Yamada 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: 20060134447Abstract: There is provided a composite material, which exhibits the properties of copper alloy and aluminum alloy, and which has improved wear-resistance and seizure-resistance. By frame-spraying is prepared a copper-aluminum composite material, which consists of copper or first copper-alloy (for example Cu—Pb alloy) including at least unmelted phase and aluminum or first aluminum-alloy (for example Al—Si alloy) including at least melted phase.Type: ApplicationFiled: November 21, 2005Publication date: June 22, 2006Applicant: TAIHO KOGYO Co., LTD.Inventors: Takashi Tomikawa, Toyokazu Yamada
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Patent number: 6541127Abstract: In order to improve the wear resistance of the swash plate of a swash-plate type compressor, on which plate copper alloy is flame-sprayed, a composite material, which consists of copper or first copper alloy (for example Cu—Pb alloy) including at least unmelted phase and aluminum or first aluminum alloy (for example Al—Si alloy) including at least melted phase, is flame sprayed on the sliding surface with a shoe.Type: GrantFiled: March 9, 2001Date of Patent: April 1, 2003Assignee: Taiho Kogyo Co., LTDInventors: Takashi Tomikawa, Toyokazu Yamada
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Patent number: 6337141Abstract: The seizure resistance of an Al-based flame-sprayed layer formed on the swash plate of a swash-plate type comressor is increased to such a level comparable to that of a flame-sprayed bronze layer. The Al-based flame-sprayed layer of the present invention contains: from 12 to 60% of Si and granular Si particles dispersed in the matrix thereof, and at least one dispersing phase of graphite carbon, amorphous carbon and carbon, the crystallizing degree of which is between the graphite carbon and amorphous carbon, and MoS2.Type: GrantFiled: December 16, 1999Date of Patent: January 8, 2002Assignees: Taiho Kogyo Co., Ltd., Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Toyokazu Yamada, Soo-Myung Hong, Masanori Akiduki, Takashi Kokubo, Hiroaki Kayukawa, Hideki Mizutani, Manabu Sugiura, Takeshi Imanishi
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Patent number: 5281453Abstract: A multilayer composite and an easily openable container produced by using the multilayer composite are provided. The multilayer composite comprises a surface layer of a polyolefin resin, an intermediate layer of a mixture of a polystyrenic resin with a thermoplastic elastomer or with a thermoplastic elastomer and a polyolefin resin, and a base layer of a polystyrenic resin, and the peeling strength between the intermediate layer and the base layer is larger than the peeling strength between the surface layer and the intermediate layer. The easily openable container produced by using the multilayer composite is capable of being sealed with a lid strongly while maintaining easy openability because the opening of the sealed container is performed utilizing the peeling between the surface layer and the intermediate layer.Type: GrantFiled: January 10, 1991Date of Patent: January 25, 1994Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Toyokazu Yamada, Masahiro Akamatsu
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Patent number: 5194109Abstract: A method for recovering and reusing a scrap multilayer plastic sheet or film comprising at least a base material layer and laminated with an adhesive resin comprising at least one of an ethylene-vinyl acetate copolymer, a styrene-isoprene copolymer, a styrene-butadiene copolymer, a styrene-methyl methacrylate copolymer and an ethylene-acrylic acid ester-maleic anhydride copolymer. The method comprises heating the scrap multilayer sheet or film to a temperature lower than the softening point of the base material layer to make the interlaminar peeling strength of the adhesive resin lower than the strength at break of a layer having the lowest strength at break, except for the adhesive layer, and separating the multilayer scrap into at least two scrap layers and recovering at least one scrap layer in sheet or film form. The present invention provides effective reuse of scrap with almost no reduction in physical properties. Furthermore the cost of the production or molding of the sheet can be reduced.Type: GrantFiled: May 22, 1992Date of Patent: March 16, 1993Assignee: Idemitsu Petrochemical Co., Ltd.Inventor: Toyokazu Yamada
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Patent number: 5167900Abstract: A multilayer container with a flange for sealing with a lid, wherein the thickness of the inner surface layer at the inner edge of the flange is thinner than that in the sealing area, is produced by a method wherein a circular portion of a multilayer sheet to be the flange is held at a certain pressure while the multilayer sheet is being thermoformed under specified molding conditions, with the other portion than the circular portion being stretched. Even a seal ring having an even surface serves as a means for sealing the resulting multilayer container with a lid while ensuring easy openability.Type: GrantFiled: October 4, 1991Date of Patent: December 1, 1992Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Hiroshi Odaka, Hiroshi Maeda, Hiroyuki Takahashi, Toyokazu Yamada
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Patent number: 5165974Abstract: A multilayer container with a flange for sealing with a lid, wherein the thickness of the inner surface layer at the inner edge of the flange is thinner than that in the sealing area, is produced by a method wherein a circular portion of a multilayer sheet to be the flange is held at a certain pressure while the multilayer sheet is being thermoformed under specified molding conditions, with the other portion than the circular portion being stretched. Even a seal ring having an even surface serves as a means for sealing the resulting multilayer container with a lid while ensuring easy openability.Type: GrantFiled: October 25, 1990Date of Patent: November 24, 1992Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Hiroshi Odaka, Hiroshi Maeda, Hiroyuki Takahashi, Toyokazu Yamada
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Patent number: 5061532Abstract: A multilayer structure comprising (C) a substrate layer, (A) a surface layer of a thermoplastic resin, and (B) an intermediate layer of a thermoplastic resin sandwiched between the (C) substrate layer and the (A) surface layer, wherein the (B) intermediate layer contains 0 to 70% by weight of a flake inorganic filler, the peeling strength between the (A) surface layer and the (B) intermediate layer is from 0.3 to 2.0 kg/15 mm, and the peeling strength between the (B) intermediate layer and the (C) substrate layer is at least 1.2 times as large as the peeling strength between the (A) surface layer and the (B) intermediate layer.Type: GrantFiled: September 6, 1990Date of Patent: October 29, 1991Assignee: Idemitsu Petrochemical, Co., Ltd.Inventor: Toyokazu Yamada
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Patent number: 4970113Abstract: A multilayer structure comprising (C) a substrate layer, (A) a surface layer of a thermoplastic resin, and (B) an intermediate layer of a thermoplastic resin sandwiched between the (C) substrate layer and the (A) surface layer, wherein the (B) intermediate layer contains 0 to 70% by weight of a flake inorganic filler, the peeling strength between the (A) surface layer and the (B) intermediate layer is from 0.3 to 2.0 kg/15 mm, and the peeling strength between the (B) intermediate layer and the (C) substrate layer is at least 1.2 times as large as the peeling strength between the (A) surface layer and the (B) intermediate layer.Type: GrantFiled: April 17, 1989Date of Patent: November 13, 1990Assignee: Idemitsu Petrochemical Co., Ltd.Inventor: Toyokazu Yamada
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Patent number: 4960648Abstract: A laminated material is prepared in which a resin composition layer (A) containing a thermoplastic resin and an inorganic filler in a scaly or non-scaly form in an amount from 20% to 80% by weight of the total weight of the thermoplastic resin and the filler interposes a resin composition layer (B) containing a thermoplastic resin and an inorganic filler in an amount from 30% to 70% by weight of the weight of the inorganic filler contained in the resin composition layer (A), the filler being in a scally form when the filler in the layer (A) is in a scaly form or being in a non-scaly form when the filler in the layer (A) is in a non-scaly form with a thermoplastic resin layer.Type: GrantFiled: April 12, 1989Date of Patent: October 2, 1990Assignee: Idemitsu Petrochemical Company LimitedInventor: Toyokazu Yamada
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Patent number: 4917851Abstract: A method of manufacturing a multi-layer resin material by employing a plurality of kinds of thermoplastic resin. Resins for inner and outer layers are supplied into a feed block of a feed block type T-die coextrusion apparatus where they are laid up another, and are then sent to the T-die side. In this case, a resin which is practically similar to the resin for the outer layer is supplied as an auxiliary resin to both lateral edges of the multi-layer resins within the feed block. Thus, the sheet extruded from the T-die slit has lateral edges which are made of a single resin.Type: GrantFiled: May 22, 1986Date of Patent: April 17, 1990Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Toyokazu Yamada, Masao Miyama, Hideo Sugimura, Takeshi Shinohara
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Patent number: 4842951Abstract: A resin laminate is disclosed, which comprises a gas permeation-resistant resin layer having laminated on each side thereof a polyolefin based resin layer, wherein said polyolefin based resin layer contains an inorganic filler in an amount of 30 to 80% by weight based on the total weight of the resin composition. The resin laminate may be provided with a thermoplastic resin layer containing no inorganic filler on the outersurface thereof. The resin laminate has a minimized oxygen gas permeability and has a low calorific value and is useful as a packaging material.Type: GrantFiled: December 24, 1987Date of Patent: June 27, 1989Assignee: Idemitsu Petrochemical Company LimitedInventors: Toyokazu Yamada, Masao Miyama, Hideo Sugimura, Takeshi Shinohara