Patents by Inventor Kouhei Shimoda
Kouhei Shimoda 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: 20110140162Abstract: Provided are a conductive adhesive capable of ensuring both conductive properties and adhesion properties and an LED substrate using the conductive adhesive. The conductive adhesive contains a conductive filler, a binder resin, and a solvent as main components thereof, and the conductive filler contains a metal powder having an average particle size of 2 to 30 ?m as a main component thereof and contains ultrafine metal particles having an average particle size of 100 nm or less.Type: ApplicationFiled: June 26, 2009Publication date: June 16, 2011Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Issei Okada, Kouhei Shimoda
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Patent number: 6939824Abstract: A highly durable exhaust emission control device which is provided in a container disposed in an intermediate portion of an exhaust system, wherein the exhaust emission control device comprises (1) a heat-resistant porous body having communicating pores, (2) a mixture of copper oxide and aluminum oxide supported on the surface of the porous body, and (3) platinum supported on the surface and an inner portion of the mixture, the grain size of the copper oxide being from 0.1 ?m to 50 ?m. The exhaust emission control device is manufactured by preparing the heat-resistant porous body; (2) applying to the porous body a slurry of a mixture of copper oxide and aluminum oxide and/or compounds convertible into these oxides by firing, and baking the mixture and/or compounds; and (3) applying a water-soluble platinum compound to the porous body, and baking the platinum compound. The platinum compound may be applied with the oxide mixture and/or the compounds of copper and aluminum to the porous body.Type: GrantFiled: March 6, 2001Date of Patent: September 6, 2005Assignee: Sumitomo Electric Industries, Ltd.Inventors: Kouhei Shimoda, Syoji Nakagama, Tomohiko Ihara
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Patent number: 6696103Abstract: Aluminium nitride ceramics improved in heat radiation property used as a substrate for integrated circuits and package material, comprising a sintered article consisting mainly of aluminium nitride and having a thermal conductivity higher than 100.W/m.K at room temperature and a surface layer consisting mainly of aluminium nitride or oxide glass deposited on the sintered article. A paste of aluminium nitride powder or oxide glass powder is coated on a surface of the sintered article of aluminium nitride and then is sintered to prepare a dense smooth surface layer.Type: GrantFiled: July 22, 1999Date of Patent: February 24, 2004Assignee: Sumitomo Electric Industries, Ltd.Inventors: Kouhei Shimoda, Kazuya Kamitake, Hirohiko Nakata, Kazutaka Sasaki, Masuhiro Natsuhara, Harutoshi Ukegawa
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Publication number: 20010028867Abstract: A highly durable exhaust emission control device which is provided in a container disposed in an intermediate portion of an exhaust system, wherein the exhaust emission control device comprises (1) a heat-resistant porous body having communicating pores, (2) a mixture of copper oxide and aluminum oxide supported on the surface of the porous body, and (3) platinum supported on the surface and an inner portion of the mixture, the grain size of the copper oxide being from 0.1 &mgr;m to 50 &mgr;m. The exhaust emission control device is manufactured by preparing the heat-resistant porous body; (2) applying to the porous body a slurry of a mixture of copper oxide and aluminum oxide and/or compounds convertible into these oxides by firing, and baking the mixture and/or compounds; and (3) applying a water-soluble platinum compound to the porous body, and baking the platinum compound. The platinum compound may be applied with the oxide mixture and/or the compounds of copper and aluminum to the porous body.Type: ApplicationFiled: March 6, 2001Publication date: October 11, 2001Applicant: Sumitomo Electric Industries, Ltd.Inventors: Kouhei Shimoda, Syoji Nakagama, Tomohiko Ihara
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Patent number: 6231817Abstract: A highly durable exhaust emission control device which is provided in a container disposed in an intermediate portion of an exhaust system, wherein the exhaust emission control device comprises (1) a heat-resistant porous body having communicating pores, (2) a mixture of copper oxide and aluminum oxide supported on the surface of the porous body, and (3) platinum supported on the surface and an inner portion of the mixture, the grain size of the copper oxide being from 0.1 &mgr;m to 50 &mgr;m. The exhaust emission control device is manufactured by preparing the heat-resistant porous body; (2) applying to the porous body a slurry of a mixture of copper oxide and aluminum oxide and/or compounds convertible into these oxides by firing, and baking the mixture and/or compounds; and (3) applying a water-soluble platinum compound to the porous body, and baking the platinum compound. The platinum compound may be applied with the oxide mixture and/or the compounds of copper and aluminum to the porous body.Type: GrantFiled: December 11, 1998Date of Patent: May 15, 2001Assignee: Sumitomo Electric Industries, Ltd.Inventors: Kouhei Shimoda, Syoji Nakagama, Tomohiko Ihara
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Patent number: 5955148Abstract: Aluminium nitride ceramics improved in heat radiation property used as a substrate for integrated circuits and package material, comprising a sintered article consisting mainly of aluminium nitride and having a thermal conductivity higher than 100.multidot.W/m.multidot.K at room temperature and a surface layer consisting mainly of aluminium nitride or oxide glass deposited on the sintered article. A paste of aluminium nitride powder or oxide glass powder is coated on a surface of the sintered article of aluminium nitride and then is sintered to prepare a dense smooth surface layer.Type: GrantFiled: October 27, 1997Date of Patent: September 21, 1999Assignee: Sumitomo Electric Industries, Ltd.Inventors: Kouhei Shimoda, Kazuya Kamitake, Hirohiko Nakata, Kazutaka Sasaki, Masuhiro Natsuhara, Harutoshi Ukegawa
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Patent number: 5679469Abstract: A metallized ceramic substrate having a smooth plating layer comprises a ceramic substrate containing aluminum nitride as a main component; a tungsten- and/or molybdenum-based metallized layer formed on at least one face of the ceramic substrate; and a nickel-based plating layer formed on the metallized layer wherein the plating layer has a thickness of not greater than 2 .mu.m and a surface roughness (Ra) of not greater than 2 .mu.m. Alternatively, the plating layer on the ceramic substrate may comprise a first nickel-based plating layer having a thickness of not greater than 2 .mu.m and a second gold-based plating layer having a thickness of not greater than 1 .mu.m wherein the gold-based plating layer has a surface roughness (Ra) of 2 .mu.m or less.Type: GrantFiled: July 26, 1995Date of Patent: October 21, 1997Assignee: Sumitomo Electric Industries, Ltd.Inventors: Kouhei Shimoda, Hirohiko Nakata
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Patent number: 5677052Abstract: Aluminium nitride ceramics improved in heat radiation property used as a substrate for integrated circuits and package material, comprising a sintered article consisting mainly of aluminium nitride and having a thermal conductivity higher than 100.multidot.W/m.multidot.K at room temperature and a surface layer consisting mainly of aluminium nitride or oxide glass deposited on the sintered article.A paste of aluminium nitride powder or oxide glass powder is coated on a surface of the sintered article of aluminium nitride and then is sintered to prepare a dense smooth surface layer.Type: GrantFiled: August 15, 1996Date of Patent: October 14, 1997Assignee: Sumitomo Electric Industries, Ltd.Inventors: Kouhei Shimoda, Kazuya Kamitake, Hirohiko Nakata, Kazutaka Sasaki, Masuhiro Natsuhara, Harutoshi Ukegawa
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Patent number: 5306679Abstract: A heat conductive aluminum nitride sintered body contains 100 parts by weight of aluminum nitride, at least 0.005 parts by weight and not more than 0.5 parts by weight of carbon, at least 0.01 parts by weight and not more than 15 parts by weight of a rare earth aluminum oxide in terms of the simple substance of a rare earth element, and at least 0.01 parts by weight and not more than 15 parts by weight of at least one element selected from a group of compounds containing elements belonging to the groups IVB, VB and VIB of the periodic table in terms of the simple substance of the element. Such a sintered body has a heat conductivity of at least 100 W/m.multidot.K. and not more than 270 W/m.multidot.K. at room temperature.Type: GrantFiled: March 1, 1993Date of Patent: April 26, 1994Assignee: Sumitomo Electric Industries, Ltd.Inventors: Kouhei Shimoda, Takao Maeda, Kouichi Sogabe, Masaya Miyake
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Patent number: 5294388Abstract: A heat conductive aluminum nitride sintered body contains 100 parts by weight of aluminum nitride, at least 0.005 parts by weight and not more than 0.5 parts by weight of carbon, at least 0.01 parts by weight and not more than 15 parts by weight of a rare earth aluminum oxide in terms of the simple substance of a rare earth element, and at least 0.01 parts by weight and not more than 15 parts by weight of at least one element selected from a group of compounds containing elements belonging to the groups IVB, VB and VIB of the periodic table in terms of the simple substance of the element. Heat conductivity of the aluminum nitride sintered body is at least 100 W/m.multidot.K and not more than 270 W/m.multidot.K at the ordinary temperature. According to a method of preparing such an aluminum nitride sintered body, at least 0.01 parts by weight and not more than 5 parts by weight of carbon, at least 0.01 parts by weight and not more than 15 parts by weight of an oxide of a rare earth element, and at least 0.Type: GrantFiled: July 29, 1992Date of Patent: March 15, 1994Assignee: Sumitomo Electric Industries, Ltd.Inventors: Kouhei Shimoda, Takao Maeda, Kouichi Sogahe, Masaya Miyake
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Patent number: 5147832Abstract: An AlN sintered body which has a color within the range of gray to black and a thermal conductivity within the range of 100 to 270 W/m.multidot.K at room temperature. Such a body is useful as an electronic material and a method of preparing the same. The AlN sintered body contains 100 parts by weight of AlN, 0.005 to 0.5 parts by weight of carbon, not more than 1 part by weight of a boron compound in terms of the simple substance of boron, 0.01 to 15 parts by weight of a rare earth aluminum oxide in terms of the simple substance of the rare earth element, and 0.01 to 15 parts by weight of a compound containing an element belonging to the group IVB of the periodic table in terms of the simple substance of the element. This AlN sintered body is obtained by shaping a mixture of the above components into a prescribed configuration and thereafter firing the as-formed compact in a non-oxidizing atmosphere containing at least 10 percent by volume of nitrogen, at a temperature of 1500.degree. to 2100.degree. C.Type: GrantFiled: July 31, 1991Date of Patent: September 15, 1992Assignee: Sumitomo Electric Industries, Ltd.Inventors: Kouhei Shimoda, Takao Maeda, Kouichi Sogabe, Masaya Miyake