Patents by Inventor Yasuhiro Yoneda
Yasuhiro Yoneda 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: 7253023Abstract: An inexpensive multilayer wiring circuit board capable of conducting high frequency switching operation on the circuit while the generation of high frequency noise is being suppressed by reducing the inductance of the circuit in provided. A multilayer wiring circuit board comprising: an uppermost layer designated as a first layer on which parts are mounted; a second layer on which one of a ground layer and an electric power source layer is arranged; a third layer on which the other is arranged; and an insulating layer arranged between the ground layer and the electric power source layer. A resin layer having a thermoplastic adhesion property on both faces is used as material of the insulating layer arranged between the electric power source layer and the ground layer.Type: GrantFiled: December 22, 2004Date of Patent: August 7, 2007Assignee: Fujitsu LimitedInventors: Toshihiro Kusagaya, Yasuhiro Yoneda, Daisuke Mizutani, Kazuhiko Iijima, Yuji Suwa
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Patent number: 7247082Abstract: A polishing composition comprising an improver of a ratio of a polishing rate of an insulating film to that of a stopper film, wherein the polishing rate of the stopper film is selectively decreased, comprising one or more compounds selected from the group consisting of a monoamine or diamine compound; a polyamine having three or more amino groups in its molecule; an ether group-containing amine; and a heterocyclic compound having nitrogen atom. The polishing composition can be used for removing an insulating film which has been embedded for isolation into a trench formed on a silicon substrate and sedimented outside the trench, thereby planing a surface of the silicon substrate.Type: GrantFiled: January 10, 2006Date of Patent: July 24, 2007Assignee: Kao CorporationInventors: Hiroyuki Yoshida, Toshiya Hagihara, Ryoichi Hashimoto, Yasuhiro Yoneda
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Publication number: 20070145014Abstract: The present invention provides a polishing composition for a glass substrate having a pH of from 0.5 to 5, containing a silica of which primary particles have an average particle size of from 5 to 50 nm and an acrylic acid/sulfonic acid copolymer having a weight-average molecular weight of from 1,000 to 5,000; and a method for manufacturing a glass substrate using the polishing composition. The polishing composition for a glass substrate can be suitably used, for example, in the manufacture of glass hard disks, aluminosilicate glass for reinforced glass substrates, glass ceramic substrates (crystallized glass substrates), synthetic quartz glass substrates (photomask substrates), and the like.Type: ApplicationFiled: December 21, 2006Publication date: June 28, 2007Inventors: Kazuhiko Nishimoto, Yasuhiro Yoneda, Mami Shirota
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Patent number: 7212485Abstract: Lens aberration in an objective lens for recording and reproducing optical information, which is composed of a molded aspherical single lens, is inhibited while at the same time good lens productivity is attained. Also attained are excellent optical properties and high production efficiency in a mold processing step and a press molding step conducted to manufacture the lens. To this end there is provided an objective lens 1 having a convex aspherical surface formed at a first surface and a numerical aperture NA which satisfies the condition NA?0.8. It is preferable to have an aspherical surface also at the second surface.Type: GrantFiled: April 13, 2004Date of Patent: May 1, 2007Assignee: Hoya CorporationInventors: Yasutaka Terashima, Yasuhiro Yoneda, Teruo Yamashita, Hideaki Koyanagi
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Publication number: 20070084828Abstract: A polishing composition for a semiconductor substrate comprising dihydroxyethylglycine, ceria particles, a dispersant, and an aqueous medium, wherein the ceria particles are contained in an amount of from 2 to 22% by weight of the polishing composition, and the dispersant is contained in an amount of from 0.001 to 1.0% by weight of the polishing composition; a polishing process of a semiconductor substrate with the polishing composition for a semiconductor substrate; and a method for manufacturing a semiconductor device including the step of polishing a substrate to be polished in accordance with the polishing process. The polishing composition is used, for example, for the steps of subjecting to shallow trench isolation, subjecting an interlayer dielectric to planarization, forming an embedded metal line, forming an embedded capacitor, and the like.Type: ApplicationFiled: October 12, 2006Publication date: April 19, 2007Inventors: Yasuhiro Yoneda, Mami Shirota, Haruki Nojo, Hirofumi Kashihara
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Publication number: 20070045233Abstract: A polishing liquid composition is applicable as a means of forming embedded metal interconnections on a semiconductor substrate. In a surface to be polished comprising an insulating layer and a metal interconnection layer, the polishing liquid composition is capable of maintaining a polishing speed of the metal layer, of suppressing an etching speed, and of preventing dishing of the metal layer.Type: ApplicationFiled: October 10, 2006Publication date: March 1, 2007Applicant: KAO CORPORATIONInventors: Yasuhiro Yoneda, Ryoichi Hashimoto, Toshiya Hagihara
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Publication number: 20060240672Abstract: A polishing liquid composition is applicable as a means of forming embedded metal interconnections on a semiconductor substrate. In a surface to be polished comprising an insulating layer and a metal interconnection layer, the polishing liquid composition is capable of maintaining a polishing speed of the metal layer, of suppressing an etching speed, and of preventing dishing of the metal layer.Type: ApplicationFiled: May 16, 2006Publication date: October 26, 2006Applicant: Kao CorporationInventors: Yasuhiro Yoneda, Ryoichi Hashimoto, Toshiya Hagihara
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Patent number: 7118685Abstract: A polishing liquid composition is applicable as a means of forming embedded metal interconnections on a semiconductor substrate. In a surface to be polished comprising an insulating layer and a metal interconnection layer, the polishing liquid composition is capable of maintaining a polishing speed of the metal layer, of suppressing an etching speed, and of preventing dishing of the metal layer.Type: GrantFiled: July 7, 2000Date of Patent: October 10, 2006Assignee: Kao CorporationInventors: Yasuhiro Yoneda, Ryoichi Hashimoto
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Patent number: 7059941Abstract: A polishing composition comprising an improver of a ratio of a polishing rate of an insulating film to that of a stopper film, wherein the polishing rate of the stopper film is selectively decreased, comprising one or more compounds selected from the group consisting of a monoamine or diamine compound; a polyamine having three or more amino groups in its molecule; an ether group-containing amine; and a heterocyclic compound having nitrogen atom. The polishing composition can be used for removing an insulating film which has been embedded for isolation into a trench formed on a silicon substrate and sedimented outside the trench, thereby planing a surface of the silicon substrate.Type: GrantFiled: November 6, 2003Date of Patent: June 13, 2006Assignee: Kao CorporationInventors: Hiroyuki Yoshida, Toshiya Hagihara, Ryoichi Hashimoto, Yasuhiro Yoneda
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Publication number: 20060117666Abstract: A polishing composition comprising an improver of a ratio of a polishing rate of an insulating film to that of a stopper film, wherein the polishing rate of the stopper film is selectively decreased, comprising one or more compounds selected from the group consisting of a monoamine or diamine compound; a polyamine having three or more amino groups in its molecule; an ether group-containing amine; and a heterocyclic compound having nitrogen atom. The polishing composition can be used for removing an insulating film which has been embedded for isolation into a trench formed on a silicon substrate and sedimented outside the trench, thereby planing a surface of the silicon substrate.Type: ApplicationFiled: January 10, 2006Publication date: June 8, 2006Inventors: Hiroyuki Yoshida, Toshiya Hagihara, Ryoichi Hashimoto, Yasuhiro Yoneda
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Publication number: 20060113283Abstract: A polishing composition containing at least one or more aminocarboxylic acids selected from the group consisting of serine, cysteine and dihydroxyethylglycine, ceria particles and an aqueous medium; a polishing process of a semiconductor substrate, including the step of polishing a semiconductor substrate with a polishing composition for a semiconductor substrate, containing at least one or more aminocarboxylic acids selected from the group consisting of serine, cysteine and dihydroxyethylglycine, ceria particles and an aqueous medium; a method for manufacturing a semiconductor device including the step of polishing a semiconductor substrate having a film formed on its surface, the film containing a silicon atom and having a shape with dents and projections, with a polishing pad pressed against a semiconductor substrate at a polishing load of from 5 to 100 kPa in the presence of a polishing composition for a semiconductor substrate, containing at least one or more aminocarboxylic acids selected from the groupType: ApplicationFiled: November 1, 2005Publication date: June 1, 2006Inventors: Yasuhiro Yoneda, Mami Shirota
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Patent number: 6992861Abstract: The present invention is aimed to provide a head suspension having a high resonant frequency, high shock resistance and low rigidity, which greatly contributes to an improvement of a magnetic disk apparatus. In an oscillation-type actuator, at least a part of a spring arm of the head suspension having a data reading/writing head slider 1 is made of an anisotropic layer whose rigidity varies in accordance with a direction. In this case, the anisotropic layer is laminated so that the high rigidity modulus orientation direction is different according to layer.Type: GrantFiled: October 3, 2002Date of Patent: January 31, 2006Assignee: Fujitsu LimitedInventors: Atsushi Suzuki, Ryosuke Koishi, Daisuke Mizutani, Ren Ishikawa, Masashi Takada, Yasuhiro Yoneda
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Publication number: 20050178157Abstract: In a method of manufacturing a glass optical element by press-forming a glass material in a chamber by using a forming mold comprising upper and lower dies at least one of which is movable, where a surrounded space is formed between the glass material and at least one of the upper and the lower dies when the upper and the lower dies come into contact with the glass material, a pressure within the chamber is reduced before the glass material placed in the forming mold is heated to a press-forming temperature. After sealing the space as formed when the glass material is in contact with at least one of forming surfaces of the upper and the lower dies, a gas is introduced into the chamber. The glass material is heated in the gas and then press-formed under a pressing load.Type: ApplicationFiled: February 11, 2005Publication date: August 18, 2005Inventor: Yasuhiro Yoneda
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Publication number: 20050172671Abstract: Disclosed is methods of manufacturing optical elements such as optical glass lenses and to methods of manufacturing optical glass elements in which a heat softened optical glass material is press molded in a pressing mold with high precision. Optical pick up units is also disclosed and it comprises an object lens manufactured by the method. In the method, at least one of an upper mold and a lower mold having a shape such that when a glass material is in contact with the upper mold and the lower mold, a molding surface of at least one of the upper mold or the lower mold forms a closed space with a surface of the glass material.Type: ApplicationFiled: June 25, 2003Publication date: August 11, 2005Applicant: HOYA CORPORATIONInventors: Yasuhiro Yoneda, Hiroyuki Sawada
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Publication number: 20050098882Abstract: An inexpensive multilayer wiring circuit board capable of conducting high frequency switching operation on the circuit while the generation of high frequency noise is being suppressed by reducing the inductance of the circuit in provided. A multilayer wiring circuit board comprising: an uppermost layer designated as a first layer on which parts are mounted; a second layer on which one of a ground layer and an electric power source layer is arranged; a third layer on which the other is arranged; and an insulating layer arranged between the ground layer and the electric power source layer. A resin layer having a thermoplastic adhesion property on both faces is used as material of the insulating layer arranged between the electric power source layer and the ground layer.Type: ApplicationFiled: December 22, 2004Publication date: May 12, 2005Applicant: FUJITSU LIMITEDInventors: Toshihiro Kusagaya, Yasuhiro Yoneda, Daisuke Mizutani, Kazuhiko Iijima, Yuji Suwa
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Publication number: 20050053788Abstract: Theme To inhibit the lens aberration in an objective lens for recording and reproducing optical information, which is composed of a molded aspherical single lens, while attaining at the same time good lens productivity, and also to ensure excellent optical properties and to obtain a high production efficiency in a mold processing step and a press molding step conducted to manufacture the lens. Means for Solving the Problems An objective lens 1 is a lens wherein a convex aspherical surface is formed at the first surface and a numerical aperture NA satisfies the condition, NA?0.8. It is preferable to have an aspherical surface also at the second surface.Type: ApplicationFiled: April 13, 2004Publication date: March 10, 2005Inventors: Yasutaka Terashima, Yasuhiro Yoneda, Teruo Yamashita, Hideaki Koyanagi
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Method of manufacturing a molded article, manufacturing device and objective lens for optical pickup
Publication number: 20040244422Abstract: The present invention relates to a method of manufacturing a molded article in the form of an optical element such as a glass lens by heat-softening a glass material such as optical glass and press molding it with high precision in a pressing mold as well as an objective lens for optical picking up. The method of manufacturing comprises press-molding a molding material to make a molded article, measuring an optical property of the molded article, correcting pressing rate of at least one of the pressing molds based on the optical property thus measured, and further press-molding to make a molded article with the corrected pressing rate. A pressing device comprising a pair of pressing molds having molding surfaces processed to prescribed shape, and a means of driving one of the pair of pressing molds at a prescribed rate to press mold a molding material supplied between the pressing molds is disclosed.Type: ApplicationFiled: March 26, 2004Publication date: December 9, 2004Applicant: HOYA CORPORATIONInventors: Yasuhiro Yoneda, Teruo Yamashita -
Publication number: 20040186206Abstract: A polishing composition comprising silica particles, polymer particles and a cationic compound in an aqueous medium; a polishing process for a substrate for a precision part with the polishing composition as defined above; a method for planarization of a substrate for a precision part, including the step of polishing the substrate for a precision part with the polishing composition as defined above; and a method for planarization of a substrate for a precision part, including the steps of polishing the substrate for a precision part with the polishing composition as defined above, the polishing composition being a first polishing composition, with applying a polishing load of 50 to 1000 hPa, and polishing the substrate after the first step with a second polishing composition comprising silica particles in an aqueous medium with applying a polishing load of 50 to 1000 hPa.Type: ApplicationFiled: December 22, 2003Publication date: September 23, 2004Inventors: Yasuhiro Yoneda, Shigeaki Takashina, Toshiya Hagihara
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Patent number: 6743851Abstract: A polyimide resin composition comprising a polyimide resin (A) and at least one 1H-tetrazole (B) selected from the group consisting of 1H-tetrazole, 5,5′-bis-1H-tetrazole, and derivatives thereof, and having an excellent rust preventing effect on copper and copper alloys.Type: GrantFiled: September 25, 2001Date of Patent: June 1, 2004Assignees: Nippon Zeon Co., Ltd., Fujitsu LimitedInventors: Akira Tanaka, Satoshi Tazaki, Yasuhiro Yoneda, Kishio Yokouchi
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Publication number: 20040102142Abstract: A polishing composition comprising an improver of a ratio of a polishing rate of an insulating film to that of a stopper film, wherein the polishing rate of the stopper film is selectively decreased, comprising one or more compounds selected from the group consisting of a monoamine or diamine compound; a polyamine having three or more amino groups in its molecule; an ether group-containing amine; and a heterocyclic compound having nitrogen atom. The polishing composition can be used for removing an insulating film which has been embedded for isolation into a trench formed on a silicon substrate and sedimented outside the trench, thereby planing a surface of the silicon substrate.Type: ApplicationFiled: November 6, 2003Publication date: May 27, 2004Applicant: Kao CorporationInventors: Hiroyuki Yoshida, Toshiya Hagihara, Ryoichi Hashimoto, Yasuhiro Yoneda