Patents by Inventor Chihiro Ito
Chihiro Ito 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).
-
Patent number: 11940031Abstract: A coil spring includes a wire rod and an elastic coat provided on the wire rod. The coil spring includes a coil section including a plurality of coil portions. The wire rod includes a round cross-sectional portion, a cross-section varying portion, and a rectangular cross-sectional portion along the longitudinal direction of the wire rod. The cross section of the rectangular cross-sectional portion is substantially square and has a first plane and a second plane. The first plane and the second plane oppose each other in the coil section. The elastic coat is provided on at least one of the first plane and the second plane. The elastic coat is continuous from the round cross-sectional portion to the cross-sectional variation portion and the rectangular cross-sectional portion.Type: GrantFiled: March 24, 2022Date of Patent: March 26, 2024Assignee: NHK SPRING CO., LTD.Inventors: Shinichi Nishizawa, Daisuke Ibano, Tsuyoshi Matsuda, Norifumi Arisaka, Shun Muramatsu, Chihiro Ito, Takuto Suzuki, Masatake Kinoshita, Asuka Kawasaki
-
Publication number: 20230304556Abstract: A coil spring includes a wire rod and an elastic coat provided on the wire rod. The coil spring includes a coil section including a plurality of coil portions. The wire rod includes a round cross-sectional portion, a cross-section varying portion, and a rectangular cross-sectional portion along the longitudinal direction of the wire rod. The cross section of the rectangular cross-sectional portion is substantially square and has a first plane and a second plane. The first plane and the second plane oppose each other in the coil section. The elastic coat is provided on at least one of the first plane and the second plane. The elastic coat is continuous from the round cross-sectional portion to the cross-sectional variation portion and the rectangular cross-sectional portion.Type: ApplicationFiled: December 7, 2022Publication date: September 28, 2023Applicant: NHK SPRING CO., LTD.Inventors: Shinichi NISHIZAWA, Daisuke IBANO, Tsuyoshi MATSUDA, Norifumi ARISAKA, Shun MURAMATSU, Chihiro ITO, Takuto SUZUKI, Masatake KINOSHITA, Asuka KAWASAKI
-
Publication number: 20230304557Abstract: A coil spring includes a wire rod and an elastic coat provided on the wire rod. The coil spring includes a coil section including a plurality of coil portions. The wire rod includes a round cross-sectional portion, a cross-section varying portion, and a rectangular cross-sectional portion along the longitudinal direction of the wire rod. The cross section of the rectangular cross-sectional portion is substantially square and has a first plane and a second plane. The first plane and the second plane oppose each other in the coil section. The elastic coat is provided on at least one of the first plane and the second plane. The elastic coat is continuous from the round cross-sectional portion to the cross-sectional variation portion and the rectangular cross-sectional portion.Type: ApplicationFiled: March 24, 2022Publication date: September 28, 2023Applicant: NHK SPRING CO., LTD.Inventors: Shinichi NISHIZAWA, Daisuke IBANO, Tsuyoshi MATSUDA, Norifumi ARISAKA, Shun MURAMATSU, Chihiro ITO, Takuto SUZUKI, Masatake KINOSHITA, Asuka KAWASAKI
-
Publication number: 20230304558Abstract: A coil spring includes a wire rod and an elastic coat provided on the wire rod. The coil spring includes a coil section including a plurality of coil portions. The wire rod includes a round cross-sectional portion, a cross-section varying portion, and a rectangular cross-sectional portion along the longitudinal direction of the wire rod. The cross section of the rectangular cross-sectional portion is substantially square and has a first plane and a second plane. The first plane and the second plane oppose each other in the coil section. The elastic coat is provided on at least one of the first plane and the second plane. The elastic coat is continuous from the round cross-sectional portion to the cross-sectional variation portion and the rectangular cross-sectional portion.Type: ApplicationFiled: May 22, 2023Publication date: September 28, 2023Applicant: NHK SPRING CO., LTD.Inventors: Shinichi NISHIZAWA, Daisuke IBANO, Tsuyoshi MATSUDA, Norifumi ARISAKA, Shun MURAMATSU, Chihiro ITO, Takuto SUZUKI, Masatake KINOSHITA, Asuka KAWASAKI
-
Publication number: 20180186631Abstract: A shift conversion catalyst layer is divided into at least two front and back stages. A first catalyst and a second catalyst are provided on the upstream side and the downstream side, respectively. The first catalyst has a property that a carbon monoxide conversion rate decreases with an increase in carbon dioxide concentration in a supplied reaction gas at a constant carbon monoxide concentration in the supplied reaction gas and a constant reaction temperature. The first catalyst is combined with the second catalyst such that the degree of decrease in carbon monoxide conversion rate with respect to an increase in carbon dioxide concentration in the supplied reaction gas in the second catalyst is lower than that in the first catalyst. Whereby, the conversion rate of a carbon monoxide concentration of a carbon monoxide shift conversion apparatus can be improved without increasing the used amount of a shift conversion catalyst.Type: ApplicationFiled: March 2, 2018Publication date: July 5, 2018Applicant: RENAISSANCE ENERGY RESEARCH CORPORATIONInventors: OSAMU OKADA, MAIKO NAKAYAMA, KAORI MORIMOTO, CHIHIRO ITO, KATSUTOSHI NAGAOKA
-
Patent number: 9744522Abstract: Provided is a production method for a porous alumina material, comprising the steps of: mixing an alkoxysilane solution that comprises an alkoxysilane, a mixed solvent comprising water and an alcohol, and an inorganic acid, with an aluminum solution comprising an aluminum compound and water, to prepare a mixed solution in which the aluminum compound and the alkoxysilane are dissolved in the mixed solvent; co-precipitating aluminum hydroxide with a silicon compound in the mixed solution, to form a precipitate; and baking the precipitate to form a porous alumina material comprising aluminum oxide and silicon oxide.Type: GrantFiled: July 30, 2015Date of Patent: August 29, 2017Assignees: Renaissance Energy Research Corporation, Institute of National Colleges of Technology, JapanInventors: Akira Hasegawa, Osamu Okada, Chihiro Ito
-
Publication number: 20170066649Abstract: The present invention provides a CO shift conversion device and a CO shift conversion method which improves CO conversion rate without increasing usage of a shift conversion catalyst. A CO shift conversion device includes: a CO shift converter 10 having a catalyst layer 5 composed of a CO shift conversion catalyst and performing CO shift conversion process on a gas flowing inside; and a CO2 remover 51 removing CO2 contained in a gas introduced. The catalyst layer 5 is composed of a CO shift conversion catalyst having a property that a CO conversion rate decreases with an increase of the concentration of CO2 contained in a gas flowing inside. The concentration of CO2 contained in a gas G0 to be processed is lowered by the CO2 remover 51 and, after that, the resultant gas is supplied to the CO shift converter 10 where it is subjected to the CO shift conversion process.Type: ApplicationFiled: November 18, 2016Publication date: March 9, 2017Applicant: Renaissance Energy Research CorporationInventors: Osamu Okada, Kaori Morimoto, Chihiro Ito
-
Patent number: 9440222Abstract: Provided is a production method for a porous alumina material, comprising the steps of: mixing an alkoxysilane solution that comprises an alkoxysilane, a mixed solvent comprising water and an alcohol, and an inorganic acid, with an aluminum solution comprising an aluminum compound and water, to prepare a mixed solution in which the aluminum compound and the alkoxysilane are dissolved in the mixed solvent; co-precipitating aluminum hydroxide with a silicon compound in the mixed solution, to form a precipitate; and baking the precipitate to form a porous alumina material comprising aluminum oxide and silicon oxide.Type: GrantFiled: January 13, 2012Date of Patent: September 13, 2016Assignees: Renaissance Energy Research Corporation, Institute of National Colleges of Technology, JapanInventors: Akira Hasegawa, Osamu Okada, Chihiro Ito
-
Publication number: 20150336083Abstract: Provided is a production method for a porous alumina material, comprising the steps of: mixing an alkoxysilane solution that comprises an alkoxysilane, a mixed solvent comprising water and an alcohol, and an inorganic acid, with an aluminum solution comprising an aluminum compound and water, to prepare a mixed solution in which the aluminum compound and the alkoxysilane are dissolved in the mixed solvent; co-precipitating aluminum hydroxide with a silicon compound in the mixed solution, to form a precipitate; and baking the precipitate to form a porous alumina material comprising aluminum oxide and silicon oxide.Type: ApplicationFiled: July 30, 2015Publication date: November 26, 2015Applicants: Renaissance Energy Research Corporation, Institute of National Colleges of Technology, JapanInventors: Akira Hasegawa, Osamu Okada, Chihiro Ito
-
Patent number: 9100238Abstract: Disclosed is an information providing apparatus, wherein information desired by users is provided with a high-precision selection, and at low processing cost.Type: GrantFiled: June 23, 2011Date of Patent: August 4, 2015Assignee: NEC CORPORATIONInventor: Chihiro Ito
-
Publication number: 20150001447Abstract: The present invention provides a CO shift conversion device and a CO shift conversion method which improves CO conversion rate without increasing usage of a shift conversion catalyst. A CO shift conversion device includes: a CO shift converter 10 having a catalyst layer 5 composed of a CO shift conversion catalyst and performing CO shift conversion process on a gas flowing inside; and a CO2 remover 51 removing CO2 contained in a gas introduced. The catalyst layer 5 is composed of a CO shift conversion catalyst having a property that a CO conversion rate decreases with an increase of the concentration of CO2 contained in a gas flowing inside. The concentration of CO2 contained in a gas G0 to be processed is lowered by the CO2 remover 51 and, after that, the resultant gas is supplied to the CO shift converter 10 where it is subjected to the CO shift conversion process.Type: ApplicationFiled: December 13, 2012Publication date: January 1, 2015Applicant: RENAISSANCE ENERGY RESEARCH CORPORATIONInventors: Osamu Okada, Kaori Morimoto, Chihiro Ito
-
Publication number: 20140151602Abstract: A shift conversion catalyst layer is divided into at least two front and back stages. A first catalyst and a second catalyst are provided on the upstream side and the downstream side, respectively. The first catalyst has a property that a carbon monoxide conversion rate decreases with an increase in carbon dioxide concentration in a supplied reaction gas at a constant carbon monoxide concentration in the supplied reaction gas and a constant reaction temperature. The first catalyst is combined with the second catalyst such that the degree of decrease in carbon monoxide conversion rate with respect to an increase in carbon dioxide concentration in the supplied reaction gas in the second catalyst is lower than that in the first catalyst. Whereby, the conversion rate of a carbon monoxide concentration of a carbon monoxide shift conversion apparatus can be improved without increasing the used amount of a shift conversion catalyst.Type: ApplicationFiled: July 6, 2011Publication date: June 5, 2014Applicant: Renaissance Energy CorporationInventors: Osamu Okada, Maiko Nakayama, Kaori Morimoto, Chihiro Ito, Katsutoshi Nagaoka
-
Publication number: 20130324392Abstract: Provided is a production method for a porous alumina material, comprising the steps of: mixing an alkoxysilane solution that comprises an alkoxysilane, a mixed solvent comprising water and an alcohol, and an inorganic acid, with an aluminum solution comprising an aluminum compound and water, to prepare a mixed solution in which the aluminum compound and the alkoxysilane are dissolved in the mixed solvent; co-precipitating aluminum hydroxide with a silicon compound in the mixed solution, to form a precipitate; and baking the precipitate to form a porous alumina material comprising aluminum oxide and silicon oxide.Type: ApplicationFiled: January 13, 2012Publication date: December 5, 2013Applicant: RENAISSANCE ENERGY RESEARCH CORPORATIONInventors: Akira Hasegawa, Osamu Okada, Chihiro Ito
-
Publication number: 20130226658Abstract: A contents analysis system comprises a user terminal, and a contents analysis device which receives a predetermined request from the user terminal and returns a result, wherein the contents analysis device comprises a propagation pattern extraction unit which extracts a pattern of propagation indicating, with respect to each of contents included in history data formed of histories of use of a plurality of contents, how the content propagated to a user, and a correlation calculation unit which obtains a correlation between the patterns of propagation of the contents.Type: ApplicationFiled: November 17, 2011Publication date: August 29, 2013Applicant: NEC CORPORATIONInventors: Chihiro Ito, Takashi Shiraki
-
Publication number: 20130097231Abstract: Disclosed is an information providing apparatus, wherein information desired by users is provided with a high-precision selection, and at low processing cost.Type: ApplicationFiled: June 23, 2011Publication date: April 18, 2013Applicant: NEC CORPORATIONInventor: Chihiro Ito
-
Patent number: 7717019Abstract: The present invention provides a lathe which accumulates a reduced amount of chips on a slide member serving as a tool holder mounting base and which enables a reduction in the forward-backward dimension of the entire lathe. A lathe includes a spindle 2 that rotatably supports a workpiece and processing means 4 located in front of the spindle 2. The lathe moves one or both of the spindle 2 and the processing means 4 forward and backward to execute machining on the workpiece. The processing means 4 includes a tool 40, a tool holder 41 that supports the tool 40, and a slide member 42 which is slidable in a lateral direction and which supports the tool holder 41. The slide member 42 has an inclined surface 42c that is positioned lower as the inclined surface 42c approaches the spindle 2 and on which the tool holder 41 is mounted and supported.Type: GrantFiled: September 6, 2007Date of Patent: May 18, 2010Assignee: Murata Machinery, Ltd.Inventor: Chihiro Ito
-
Patent number: 7681909Abstract: An airbag device according to the invention is applicable to an airbag device having an airbag that is housed in a state of being able to inflate and deploy in front of an occupant. The airbag has a center chamber positioned in the vicinity of the center on the occupant side in a deployed state, and side chambers positioned on both the left and right sides of the center chamber. Moreover the airbag is provided with a gas supply section that supplies inflation gas to inside of the side chambers, and a means for introducing inflation gas to inside of the center chamber after the side chamber. Furthermore, the side chamber has; a gas introduction space into which inflation gas from the gas supply section is introduced, an upper space that extends upward from the gas introduction space, and a lower space that extends downward from the gas introduction space.Type: GrantFiled: February 13, 2007Date of Patent: March 23, 2010Assignee: Autoliv Development ABInventors: Takashi Idomoto, Takeshi Ohwada, Yutaka Tsuchida, Hiroya Tabushi, Chihiro Ito, Yosuke Shimizu, Shinobu Yamamoto
-
Publication number: 20080060492Abstract: The present invention provides a lathe which accumulates a reduced amount of chips on a slide member serving as a tool holder mounting base and which enables a reduction in the forward-backward dimension of the entire lathe. A lathe includes a spindle 2 that rotatably supports a workpiece and processing means 4 located in front of the spindle 2. The lathe moves one or both of the spindle 2 and the processing means 4 forward and backward to execute machining on the workpiece. The processing means 4 includes a tool 40, a tool holder 41 that supports the tool 40, and a slide member 42 which is slidable in a lateral direction and which supports the tool holder 41. The slide member 42 has an inclined surface 42c that is positioned lower as the inclined surface 42c approaches the spindle 2 and on which the tool holder 41 is mounted and supported.Type: ApplicationFiled: September 6, 2007Publication date: March 13, 2008Applicant: MURATA MACHINERY, LTD.Inventor: Chihiro Ito
-
Publication number: 20070200319Abstract: An airbag device according to the invention is applicable to an airbag device having an airbag that is housed in a state of being able to inflate and deploy in front of an occupant. The airbag has a center chamber positioned in the vicinity of the center on the occupant side in a deployed state, and side chambers positioned on both the left and right sides of the center chamber. Moreover the airbag is provided with a gas supply section that supplies inflation gas to inside of the side chambers, and a means for introducing inflation gas to inside of the center chamber after the side chamber. Furthermore, the side chamber has; a gas introduction space into which inflation gas from the gas supply section is introduced, an upper space that extends upward from the gas introduction space, and a lower space that extends downward from the gas introduction space.Type: ApplicationFiled: February 13, 2007Publication date: August 30, 2007Applicant: AUTOLIV DEVELOPMENT ABInventors: Takashi Idomoto, Takeshi Ohwada, Yutaka Tsuchida, Hiroya Tabushi, Chihiro Ito, Yosuke Shimizu, Shinobu Yamamoto
-
Patent number: 4622872Abstract: A lathe having no sliding bed. A cross slide is slidably arranged on a first guide cylinder mounted in a lathe bed, a second guide cylinder crossing at a right angle with the first guide cylinder is arranged on the cross slide, a slide shaft sliding along the second guide cylinder is arranged, and a tool rest is fixed at the extremity end of the slide shaft.Type: GrantFiled: June 6, 1984Date of Patent: November 18, 1986Assignee: Murata Kikai Kabushiki KaishaInventor: Chihiro Ito