Patents by Inventor Keita Sakai
Keita Sakai 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: 20240119357Abstract: Provided are an analysis device, an analysis method, and a program capable of easily identifying a factor of a prediction error in prediction using a prediction model on the basis of various viewpoints. An analysis device (1) includes: a metric evaluation unit (2) that calculates and evaluates a plurality of types of metrics with respect to a prediction model, data of explanatory variables used in the prediction model, or data of target variables used in the prediction model; and a factor identification unit (3) that identifies a factor of an error in prediction by the prediction model according to a combination of evaluation results of the plurality of types of metrics.Type: ApplicationFiled: February 25, 2021Publication date: April 11, 2024Applicant: NEC CorporationInventors: Keita SAKUMA, Tomoya SAKAI, Yoshio KAMEDA, Hiroshi TAMANO
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Patent number: 11917285Abstract: A recording control apparatus includes a recording control unit for storing photographing data corresponding to an event of a mobile object as event record data in a recording unit, a removal detection unit for detecting that a recording apparatus is removed from the mobile object by acquiring a signal indicating that the recording apparatus including at least the recording unit is removed from the mobile object, a location information acquisition unit for acquiring location information of the recording apparatus, and a communication control unit for transmitting the location information acquired by the location information acquisition unit to another apparatus when the removal of the recording apparatus is detected by the removal detection unit within a predetermined time period after the event detection unit detects the event.Type: GrantFiled: November 15, 2021Date of Patent: February 27, 2024Assignee: JVCKENWOOD CORPORATIONInventors: Hirofumi Taniyama, Yasutoshi Sakai, Keita Hayashi
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Patent number: 11752686Abstract: An imprint apparatus includes: a movable housing unit; an ejection head provided in the housing unit and configured to eject an ejection material; a flexible member provided in the housing unit and separating the housing unit into a first storing space communicating with the ejection head and storing the ejection material and a second storing space storing hydraulic liquid; a first channel and a second channel communicating with the second storing space; a pressure control unit configured to control a pressure in the second storing space through the channels; and a bubble detection unit configured to detect bubbles in the channels.Type: GrantFiled: September 4, 2020Date of Patent: September 12, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Hisashi Namba, Noriyasu Hasegawa, Yoshimasa Araki, Keita Sakai
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Publication number: 20220317566Abstract: A molding apparatus includes a mechanism configured to apply a curable composition onto a substrate with irregularities, a pressing and releasing mechanism that presses or releases a mold (super straight) having a flat surface against the curable composition on the substrate, and a curing mechanism configured to cure the curable composition by light radiation, a first supply unit configured to supply a first gas to the curable-composition application mechanism, and a second supply unit configured to supply a second gas different from the first gas to the pressing and releasing mechanism.Type: ApplicationFiled: March 29, 2022Publication date: October 6, 2022Inventors: Masayuki Tanabe, Keiko Chiba, Keiji Yamashita, Keita Sakai, Toshiki Ito, Naoki Kiyohara
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Patent number: 11267252Abstract: Provided is an ejection apparatus including: an ejection head having an ejection opening for ejecting an ejection material in a liquid state; a storage container storing therein the ejection material and communicating with the ejection head; and a pressure control unit that maintains the pressure inside the storage container at a negative pressure. The pressure control unit generates a first pressure in the storage container in a normal operation, the first pressure being capable of forming a meniscus of the ejection material in the ejection opening. The pressure control unit drops the pressure inside the storage container to at least the first pressure in a case where the pressure inside the storage container reaches a predetermined pressure above the first pressure.Type: GrantFiled: May 21, 2020Date of Patent: March 8, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Masahiro Kuri, Noriyasu Hasegawa, Hisashi Namba, Ken Katsuta, Keita Sakai, Nobuto Kawahara, Kenichi Kobayashi
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Publication number: 20210069960Abstract: An imprint apparatus includes: a movable housing unit; an ejection head provided in the housing unit and configured to eject an ejection material; a flexible member provided in the housing unit and separating the housing unit into a first storing space communicating with the ejection head and storing the ejection material and a second storing space storing hydraulic liquid; a first channel and a second channel communicating with the second storing space; a pressure control unit configured to control a pressure in the second storing space through the channels; and a bubble detection unit configured to detect bubbles in the channels.Type: ApplicationFiled: September 4, 2020Publication date: March 11, 2021Inventors: Hisashi Namba, Noriyasu Hasegawa, Yoshimasa Araki, Keita Sakai
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Publication number: 20200376851Abstract: Provided is an ejection apparatus including: an ejection head having an ejection opening for ejecting an ejection material in a liquid state; a storage container storing therein the ejection material and communicating with the ejection head; and a pressure control unit that maintains the pressure inside the storage container at a negative pressure. The pressure control unit generates a first pressure in the storage container in a normal operation, the first pressure being capable of forming a meniscus of the ejection material in the ejection opening. The pressure control unit drops the pressure inside the storage container to at least the first pressure in a case where the pressure inside the storage container reaches a predetermined pressure above the first pressure.Type: ApplicationFiled: May 21, 2020Publication date: December 3, 2020Inventors: Masahiro Kuri, Noriyasu Hasegawa, Hisashi Namba, Ken Katsuta, Keita Sakai, Nobuto Kawahara, Kenichi Kobayashi
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Patent number: 9947146Abstract: The present disclosure makes it possible to perform a failure diagnosis of an electric two-wheeled vehicle easily, conveniently, and immediately. The electric two-wheeled vehicle includes an electric equipment unit having an IC tag and a host unit. The host unit is capable of communicating with the IC tag, and obtains failure information of the electric equipment unit while electric power is supplied from the battery to the electric equipment unit. The information communication terminal obtains the failure information by communicating with the electric two-wheeled vehicle in a non-contact manner, and transmits the failure information to the server via the network. The server performs a failure diagnosis on the electric two-wheeled vehicle based on the failure information.Type: GrantFiled: July 13, 2016Date of Patent: April 17, 2018Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tomoko Maeda, Kaoru Kudou, Masayuki Fujioka, Keita Sakai, Takashi Ishimura, Susumu Fukushima, Nobuhiko Mutoh, Kazunari Takahashi
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Patent number: 9829789Abstract: A determination method for determining a pattern of a mold is disclosed. The pattern of the mold is used in imprint processing of forming a pattern on imprint material by performing the steps of pressing the imprint material on a substrate against the pattern of the mold in an atmosphere containing condensable gas to be liquefied due to compression, curing the imprint material, and releasing the mold from the imprint material. A processor calculates a shrinkage amount of the pattern on the imprint material. The pattern on the imprint material shrinks by desorbing condensate liquid, which is produced through liquefaction of the condensable gas between the imprint material and the pattern of the mold in the pressing step and which is dissolved in the imprint material, from the imprint material after completion of the pressing step.Type: GrantFiled: November 3, 2014Date of Patent: November 28, 2017Assignee: Canon Kabushiki KaishaInventors: Masayuki Tanabe, Setsuo Yoshida, Keita Sakai, Hitoshi Nakano
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Patent number: 9586905Abstract: A compound having a V2 receptor agonistic activity is provided. Providing a pharmaceutical composition which contains, as an active ingredient, a compound represented by general formula (I) described below: [R1 is formula described below: (A is a lower alkylene group which may be substituted with lower alkyl group; R6 is a hydrogen atom; R7 is a hydroxyl group, an aromatic heterocyclic group which may be substituted with lower alkyl group, carbamoyl group); R2 is a hydrogen atom or lower alkyl group; R3 is lower alkyl group which may be substituted with 1-3 fluorine atoms, or halogen atom; R4 is a five-membered aromatic monocyclic heterocyclic group, five-membered non-aromatic monocyclic heterocyclic group, (provided each heterocyclic groups contain at least one nitrogen atom and may be substituted with a lower alkyl group); and R5 is a lower alkyl group, halogen atom], or pharmacologically acceptable salt thereof.Type: GrantFiled: December 26, 2013Date of Patent: March 7, 2017Assignee: SANWA KAGAKU KENKYUSHO CO., LTD.Inventors: Katsunori Kitamoto, Nobuyoshi Kasugai, Hiroyo Kataoka, Yasushi Ohsawa, Yuka Kuno, Hiroki Fujieda, Keita Sakai, Hiroki Nagano, Naoki Takahashi, Toru Izuchi, Mitsuaki Takeuchi, Daisuke Kurumazuka, Toshiyuki Miyazawa, Satoko Harada, Izumi Gotoh, Yukiyasu Asano, Yurie Yamada, Morio Okabe
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Publication number: 20160321845Abstract: The present disclosure makes it possible to perform a failure diagnosis of an electric two-wheeled vehicle easily, conveniently, and immediately. The electric two-wheeled vehicle includes an electric equipment unit having an IC tag and a host unit. The host unit is capable of communicating with the IC tag, and obtains failure information of the electric equipment unit while electric power is supplied from the battery to the electric equipment unit. The information communication terminal obtains the failure information by communicating with the electric two-wheeled vehicle in a non-contact manner, and transmits the failure information to the server via the network. The server performs a failure diagnosis on the electric two-wheeled vehicle based on the failure information.Type: ApplicationFiled: July 13, 2016Publication date: November 3, 2016Inventors: Tomoko MAEDA, Kaoru KUDOU, Masayuki FUJIOKA, Keita SAKAI, Takashi ISHIMURA, Susumu FUKUSHIMA, Nobuhiko MUTOH, Kazunari TAKAHASHI
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Publication number: 20160219717Abstract: A method is provided which allows the alignment marks of a mold and a substrate to be accurately and simply detected, and accordingly provides a method for forming a patterned film with a high throughput, and also provides a method for manufacturing an optical component, a method for manufacturing a circuit board, and a method for manufacturing an electronic component. A patterned film is formed by photo-nanoimprinting. In the method, a gas satisfies the following Inequality (1): In the Inequality (1), nR represents the refractive index of a composition not containing a gas at the wavelength of light, nR? a represents the refractive index of the photo-curable composition containing the gas at the wavelength of the light, and nM represents the refractive index of a mold at the wavelength of the light. [Math.Type: ApplicationFiled: September 22, 2014Publication date: July 28, 2016Inventors: Toshiki Ito, Shingo Ishida, Youji Kawasaki, Keita Sakai
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Patent number: 9164395Abstract: An exposure apparatus that includes a projection optical system, and exposes a substrate to light via the projection optical system and a liquid that is supplied between the projection optical system and the substrate. A plurality of recovery ports recover the liquid supplied between the projection optical system and the substrate, and are discretely arranged between vertices on each side of a polygon and at each of the vertices of the polygon. A chamber, connected to the plurality of recovery ports, receives the liquid. A pump attracts the liquid via the plurality of recovery ports and the chamber. A pressure difference between the pump and each of the recovery ports positioned at the vertices, among the plurality of recovery ports, is less than a pressure difference between the pump and each of the recovery ports positioned between the vertices, among the plurality of recovery ports.Type: GrantFiled: December 8, 2011Date of Patent: October 20, 2015Assignee: CANON KABUSHIKI KAISHAInventors: Keita Sakai, Tatsuya Hayashi, Noriyasu Hasegawa
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Publication number: 20150291533Abstract: A compound having a V2 receptor agonistic activity is provided. Providing a pharmaceutical composition which contains, as an active ingredient, a compound represented by general formula (I) described below: [R1 is formula described below: (A is a lower alkylene group which may be substituted with lower alkyl group; R6 is a hydrogen atom; R7 is a hydroxyl group, an aromatic heterocyclic group which may be substituted with lower alkyl group, carbamoyl group); R2 is a hydrogen atom or lower alkyl group; R3 is lower alkyl group which may be substituted with 1-3 fluorine atoms, or halogen atom; R4 is a five-membered aromatic monocyclic heterocyclic group, five-membered non-aromatic monocyclic heterocyclic group, (provided each heterocyclic groups contain at least one nitrogen atom and may be substituted with a lower alkyl group); and R5 is a lower alkyl group, halogen atom], or pharmacologically acceptable salt thereof.Type: ApplicationFiled: December 26, 2013Publication date: October 15, 2015Inventors: Katsunori Kitamoto, Nobuyoshi Kasugai, Hiroyo Kataoka, Yasushi Ohsawa, Yuka Kuno, Hiroki Fujieda, Keita Sakai, Hiroki Nagano, Naoki Takahashi, Toru Izuchi, Mitsuaki Takeuchi, Daisuke Kurumazuka, Toshiyuki Miyazawa, Satoko Harada, Izumi Gotoh, Yukiyasu Asano, Yurie Yamada, Morio Okabe
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Publication number: 20150123300Abstract: A determination method for determining a pattern of a mold is disclosed. The pattern of the mold is used in imprint processing of forming a pattern on imprint material by performing the steps of pressing the imprint material on a substrate against the pattern of the mold in an atmosphere containing condensable gas to be liquefied due to compression, curing the imprint material, and releasing the mold from the imprint material. A processor calculates a shrinkage amount of the pattern on the imprint material. The pattern on the imprint material shrinks by desorbing condensate liquid, which is produced through liquefaction of the condensable gas between the imprint material and the pattern of the mold in the pressing step and which is dissolved in the imprint material, from the imprint material after completion of the pressing step.Type: ApplicationFiled: November 3, 2014Publication date: May 7, 2015Inventors: Masayuki Tanabe, Setsuo Yoshida, Keita Sakai, Hitoshi Nakano
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Publication number: 20140327183Abstract: An object is to provide an imprint method or an imprint apparatus that not only reduces the time for filling with resin or reduces pattern defects, but also reduces the surface roughness of resin. An imprint method brings a resin on a substrate and a mold having a pattern into contact with each other to transfer the pattern onto the substrate. The imprint method includes a step of bringing the resin on the substrate and the mold into contact with each other while a space between the substrate and the mold is filled with a predetermined gas, a step of curing the resin while the resin and the mold are in contact with each other, and a step of separating the resin and the mold. The predetermined gas contains a first gas having a solubility of 0.36 mol/liter or more in the resin and a second gas having a solubility of less than 0.36 mol/liter in the resin, at 20° C. and a pressure of 1 atmosphere.Type: ApplicationFiled: July 16, 2014Publication date: November 6, 2014Inventors: Sunao Mori, Keiji Yamashita, Keita Sakai
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Publication number: 20120170007Abstract: The present invention provides an exposure apparatus including a projection optical system, and configured to expose a substrate to light via the projection optical system and a liquid, the apparatus including a plurality of recovery ports configured to recover the liquid supplied between the projection optical system and the substrate, a chamber connected to the plurality of recovery ports, and a pump configured to attract the liquid via the plurality of recovery ports and the chamber, wherein the plurality of recovery ports are discretely arranged between vertices on each side of a polygon and at each of vertices of the polygon, and a pressure difference between the pump and each of the recovery ports positioned at the vertices among the plurality of recovery ports is less than a pressure difference between the pump and each of the recovery ports positioned between the vertices among the plurality of recovery ports.Type: ApplicationFiled: December 8, 2011Publication date: July 5, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Keita Sakai, Tatsuya Hayashi, Noriyasu Hasegawa
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Patent number: 7754011Abstract: A method of manufacturing calcium fluoride single crystal includes cooling the calcium fluoride single crystal with variable cooling rates so that throughout a temperature range in the cooling step, maximum shear stress inside the calcium fluoride single crystal caused by thermal stress is approximately equal to or smaller than critical resolved shear stress (?c) of the calcium fluoride single crystal in a <1 1 0> direction on a {0 0 1} plane of the calcium fluoride single crystal, and is maintained to be an approximately constant ratio, and adding strontium fluoride when growing the single crystal before the cooling step.Type: GrantFiled: May 2, 2008Date of Patent: July 13, 2010Assignee: Canon Kabushiki KaishaInventor: Keita Sakai
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Patent number: 7714980Abstract: An exposure apparatus has a projection optical system configured to project an image of a reticle pattern onto a substrate, and exposes the substrate via liquid supplied to a space between the substrate and the projection optical system. The exposure apparatus includes an oxygen removal unit configured to reduce dissolved oxygen in the liquid by bringing the liquid into contact with a gas other than oxygen, and a degassing unit configured to reduce a dissolved gas in the liquid.Type: GrantFiled: February 15, 2007Date of Patent: May 11, 2010Assignee: Canon Kabushiki KaishaInventor: Keita Sakai
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Patent number: 7705966Abstract: At least one exemplary embodiment is directed to an exposure apparatus configured to expose a substrate through a liquid comprising a projection optical and a nozzle unit. The nozzle unit has a liquid recovery port recovering the liquid and a liquid supply port arranged between a final lens and the liquid recovery port and supplying the liquid. A static contact angle of an outer-side second portion of the nozzle unit surface than the liquid recovery port with respect to the liquid is larger than that of an inner-side first portion of the nozzle unit surface than the liquid recovery port by 20° or more. A sliding angle of the second portion with respect to the liquid is 20° or less.Type: GrantFiled: May 30, 2007Date of Patent: April 27, 2010Assignee: Canon Kabushiki KaishaInventors: Keita Sakai, Noriyasu Hasegawa