Patents by Inventor Kazutaka Egami
Kazutaka Egami 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: 11534884Abstract: A grinding apparatus includes: a grinding stone in which an outer circumferential surface thereof is pressed against the workpiece while being rotated and driven; and a fluid injection apparatus that has a fluid injection nozzle including an injection port from which a fluid is injected to the outer circumferential surface of the grinding stone, and a grinding oil supply apparatus that supplies a grinding oil to a processing point and that includes a grinding oil supply nozzle separate from the fluid injection nozzle, the processing point being an abutting section of the grinding stone and the workpiece, wherein the injection port is arranged so as to face the outer circumferential surface of the grinding stone in a state capable of injecting the fluid to a position different from the processing point in a radial direction of the grinding stone among the outer circumferential surface of the grinding stone.Type: GrantFiled: March 3, 2022Date of Patent: December 27, 2022Assignee: NSK LTD.Inventors: Eiji Utada, Kazutaka Egami
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Publication number: 20220184769Abstract: A grinding apparatus includes: a grinding stone in which an outer circumferential surface thereof is pressed against the workpiece while being rotated and driven; and a fluid injection apparatus that has a fluid injection nozzle including an injection port from which a fluid is injected to the outer circumferential surface of the grinding stone, and a grinding oil supply apparatus that supplies a grinding oil to a processing point and that includes a grinding oil supply nozzle separate from the fluid injection nozzle, the processing point being an abutting section of the grinding stone and the workpiece, wherein the injection port is arranged so as to face the outer circumferential surface of the grinding stone in a state capable of injecting the fluid to a position different from the processing point in a radial direction of the grinding stone among the outer circumferential surface of the grinding stone.Type: ApplicationFiled: March 3, 2022Publication date: June 16, 2022Applicant: NSK LTD.Inventors: Eiji UTADA, Kazutaka EGAMI
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Patent number: 11298790Abstract: A grinding apparatus includes: a grinding stone in which an outer circumferential surface thereof is pressed against the workpiece while being rotated and driven; and a fluid injection apparatus that has a fluid injection nozzle including an injection port from which a fluid is injected to the outer circumferential surface of the grinding stone, and a grinding oil supply apparatus that supplies a grinding oil to a processing point and that includes a grinding oil supply nozzle separate from the fluid injection nozzle, the processing point being an abutting section of the grinding stone and the workpiece, wherein the injection port is arranged so as to face the outer circumferential surface of the grinding stone in a state capable of injecting the fluid to a position different from the processing point in a radial direction of the grinding stone among the outer circumferential surface of the grinding stone.Type: GrantFiled: January 29, 2020Date of Patent: April 12, 2022Assignee: NSK LTD.Inventors: Eiji Utada, Kazutaka Egami
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Publication number: 20200164478Abstract: A grinding apparatus includes: a grinding stone in which an outer circumferential surface thereof is pressed against the workpiece while being rotated and driven; and a fluid injection apparatus that has a fluid injection nozzle including an injection port from which a fluid is injected to the outer circumferential surface of the grinding stone, and a grinding oil supply apparatus that supplies a grinding oil to a processing point and that includes a grinding oil supply nozzle separate from the fluid injection nozzle, the processing point being an abutting section of the grinding stone and the workpiece, wherein the injection port is arranged so as to face the outer circumferential surface of the grinding stone in a state capable of injecting the fluid to a position different from the processing point in a radial direction of the grinding stone among the outer circumferential surface of the grinding stone.Type: ApplicationFiled: January 29, 2020Publication date: May 28, 2020Applicant: NSK LTD.Inventors: Eiji UTADA, Kazutaka EGAMI
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Patent number: 10358353Abstract: Silica particles calcined in a calcination step are supplied in a swirling flow generated by a gas introduced in a disintegration container and disintegrated therein, whereby the silica particles can be easily disintegrated and there can be obtained disintegrated silica particles having both low hygroscopicity and high dispersibility in resin. In addition, the introduction of dehumidified air (gas) during the disintegration reduces hygroscopicity and greatly improves dispersibility in resin. Furthermore, performing heating treatment (calcination) again after the disintegration causes the surface modification of the disintegrated silica particles, greatly improving hygroscopicity and dispersibility in resin. The resin composition obtained in this manner including silica particles provides good injectability and filterability when used for an underfill material for semiconductors and an in-plane spacer or sealing spacer of liquid crystal displays.Type: GrantFiled: August 1, 2014Date of Patent: July 23, 2019Assignee: JGC Catalysts and Chemicals Ltd.Inventors: Ryo Muraguchi, Miki Egami, Mitsuaki Kumazawa, Masanobu Taniguchi, Tsuguo Koyanagi, Michio Komatsu, Kazutaka Egami
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Publication number: 20180036857Abstract: A grinding apparatus includes: a grinding stone in which an outer circumferential surface thereof is pressed against the workpiece while being rotated and driven; and a fluid injection apparatus that has a fluid injection nozzle including an injection port from which a fluid is injected to the outer circumferential surface of the grinding stone, and a grinding oil supply apparatus that supplies a grinding oil to a processing point and that includes a grinding oil supply nozzle separate from the fluid injection nozzle, the processing point being an abutting section of the grinding stone and the workpiece, wherein the injection port is arranged so as to face the outer circumferential surface of the grinding stone in a state capable of injecting the fluid to a position different from the processing point in a radial direction of the grinding stone among the outer circumferential surface of the grinding stone.Type: ApplicationFiled: October 19, 2017Publication date: February 8, 2018Applicant: NSK LTD.Inventors: Eiji UTADA, Kazutaka EGAMI
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Patent number: 9856407Abstract: A water-repellent transparent coating-substrate assembly includes a substrate and a water-repellent transparent coating disposed on a surface of the substrate, the transparent coating including an inorganic oxide fine particle layer containing inorganic oxide fine particles, and an overcoating layer disposed on the inorganic oxide fine particle layer, the surface of the water-repellent transparent coating having irregularities including depressions and protrusions in which the protrusions have an average height (TF) in the range of 30 to 500 nm and an average protrusion interval (pitch width) (WF) in the range of 50 to 1000 nm, the water-repellent transparent coating having a water contact angle in the range of 130 to 180°.Type: GrantFiled: December 24, 2013Date of Patent: January 2, 2018Assignee: JGC Catalysts and Chemicals Ltd.Inventors: Yuhko Hakoshima, Masayuki Matsuda, Ryo Muraguchi, Kazutaka Egami, Tsuguo Koyanagi, Mitsuaki Kumazawa, Satoshi Yoshida, Yuji Tawarasako
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Publication number: 20160159654Abstract: Silica particles calcined in a calcination step are supplied in a swirling flow generated by a gas introduced in a disintegration container and disintegrated therein, whereby the silica particles can be easily disintegrated and there can be obtained disintegrated silica particles having both low hygroscopicity and high dispersibility in resin. In addition, the introduction of dehumidified air (gas) during the disintegration reduces hygroscopicity and greatly improves dispersibility in resin. Furthermore, performing heating treatment (calcination) again after the disintegration causes the surface modification of the disintegrated silica particles, greatly improving hygroscopicity and dispersibility in resin. The resin composition obtained in this manner including silica particles provides good injectability and filterability when used for an underfill material for semiconductors and an in-plane spacer or sealing spacer of liquid crystal displays.Type: ApplicationFiled: August 1, 2014Publication date: June 9, 2016Inventors: Ryo Muraguchi, Miki Egami, Mitsuaki Kumazawa, Masanobu Taniguchi, Tsuguo Koyanagi, Michio Komatsu, Kazutaka Egami
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Publication number: 20150329755Abstract: A water-repellent transparent coating-substrate assembly includes a substrate and a water-repellent transparent coating disposed on a surface of the substrate, the transparent coating including an inorganic oxide fine particle layer containing inorganic oxide fine particles, and an overcoating layer disposed on the inorganic oxide fine particle layer, the surface of the water-repellent transparent coating having irregularities including depressions and protrusions in which the protrusions have an average height (TF) in the range of 30 to 500 nm and an average protrusion interval (pitch width) (WF) in the range of 50 to 1000 nm, the water-repellent transparent coating having a water contact angle in the range of 130 to 180°.Type: ApplicationFiled: December 24, 2013Publication date: November 19, 2015Inventors: Yuhko Hakoshima, Masayuki Matsuda, Ryo Muraguchi, Kazutaka Egami, Tsuguo Koyanagi, Mitsuaki Kumazawa, Satoshi Yoshida, Yuji Tawarasako
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Patent number: 8431512Abstract: A catalyst for oxychlorination according to the present invention contains alumina and copper, and a content of copper is in the range from 5 to 20% by weight calculated as that of CuO, while a content of halogen is not more than 5% by weight. The catalyst is produced by the following steps (a) to (c): (a) preparing a slurry for spray-drying by adding an acid and an aqueous solution of cupric nitrate in a pseudo-boehmite alumina slurry; (b) spray-drying the slurry; and (c) burning the particles obtained in step (b).Type: GrantFiled: May 17, 2007Date of Patent: April 30, 2013Assignee: JGC Catalysts and Chemicals Ltd.Inventor: Kazutaka Egami
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Publication number: 20080248946Abstract: A catalyst for oxychlorination according to the present invention contains alumina and copper, and a content of copper is in the range from 5 to 20% by weight calculated as that of CuO, while a content of halogen is not more than 5% by weight. The catalyst is produced by the following steps (a) to (c): (a) preparing a slurry for spray-drying by adding an acid and an aqueous solution of cupric nitrate in a pseudo-boehmite alumina slurry; (b) spray-drying the slurry; and (c) burning the particles obtained in step (b).Type: ApplicationFiled: May 17, 2007Publication date: October 9, 2008Applicant: CATALYSTS & CHEMICALS INDUSTRIES CO., LTD.Inventor: Kazutaka Egami
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Patent number: 7429366Abstract: A solution of a chromium compound is impregnated into a silica-alumina carrier made of alumina and containing 1 to 5 weight % of silica relative to the weight of the carrier, thereby to obtain a decomposing catalyst carrying 10 to 15 weight % of chromium oxide relative to the weight of the catalyst in terms of Cr2O3. By contacting mixed gas obtained through partial oxidation of heavy oil and/or coal with the decomposing catalyst, COS and HCN contained in the mixed gas are decomposed/removed. In this case, transition of alumina into boehmite can be suppressed owing to coexistence of silica and chromium oxide, so that COS and HCN can be decomposed by highly active catalytic reactions over a long time.Type: GrantFiled: October 30, 2002Date of Patent: September 30, 2008Assignees: JGC Corporation, Catalysts & Chemicals Industries Co., Ltd, Sud-Chemie Catalysts Japan, Inc.Inventors: Satomi Ishigaki, legal representative, Aya Ishigaki, legal representative, Akane Ishigaki, legal representative, Tatsuya Ishigaki, legal representative, Eiichi Hosoya, Kazutaka Egami, Shinya Ishigaki
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Publication number: 20050084435Abstract: A solution of a chromium compound is impregnated into a silica-alumina carrier made of alumina and containing 1 to 5 weight % of silica relative to the weight of the carrier, thereby to obtain a decomposing catalyst carrying 10 to 15 weight % of chromium oxide relative to the weight of the catalyst in terms of Cr2O3. By contacting mixed gas obtained through partial oxidation of heavy oil and/or coal with the decomposing catalyst, COS and HCN contained in the mixed gas are decomposed/removed. In this case, transition of alumina into boehmite can be suppressed owing to coexistence of silica and chromium oxide, so that COS and HCN can be decomposed by highly active catalytic reactions over a long time.Type: ApplicationFiled: October 30, 2002Publication date: April 21, 2005Inventors: Shinya Ishigaki, Satomi Ishigaki, Aya Ishigaki, Akane Ishigaki, Tatsuya Ishigaki, Eiichi Hosoya, Kazutaka Egami