Patents by Inventor Masataka Nagai
Masataka Nagai 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: 20240093937Abstract: Liquid hydrogen is produced while reducing emission of carbon dioxide to the atmosphere. Provided is a liquid hydrogen production device including: a carbon dioxide cycle plant (2), which includes a turbine (23) using a carbon dioxide fluid as a driving fluid, and is configured to drive the turbine (23) to generate motive power with use of a carbon dioxide cycle in which the carbon dioxide fluid discharged from the turbine (23) is increased in pressure and heated and is then re-supplied to the turbine (23); and a liquefaction plant (4) configured to cool gaseous hydrogen by heat exchange with a refrigerant, to obtain liquid hydrogen. The motive power generated by driving of the turbine (23) is used as motive power to be consumed in the liquefaction plant (4).Type: ApplicationFiled: February 12, 2021Publication date: March 21, 2024Applicant: JGC CORPORATIONInventors: Tomohide MURAOKA, Masataka NAKANE, Tomoharu INOUE, Takatoshi NAGAI
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Patent number: 11701888Abstract: A container for liquid replenishment for replenishing liquid in a liquid ejection apparatus comprises a container body capable of containing the liquid, a spout fitted to the container body and having a front end section including a front end surface and a liquid outlet for allowing the liquid to flow out therefrom, a lid member removably attached to the spout to cover the spout and a liquid absorber arranged on the spout. The liquid outlet is open in the front end surface of the spout and the liquid absorber is arranged at least on an area of the front end surface not occupied by the liquid outlet.Type: GrantFiled: March 23, 2021Date of Patent: July 18, 2023Assignee: Canon Kabushiki KaishaInventor: Masataka Nagai
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Patent number: 11351779Abstract: A liquid ejection head includes an ejection orifice forming member having a liquid ejection orifice and a substrate having a liquid flow path such that a liquid circulation flow path is formed between the ejection orifice forming member and the substrate. The liquid circulation flow path includes a bubble generation chamber facing the liquid ejection orifice and is branched from the liquid flow path so as to pass through the bubble generation chamber and join the liquid flow path. The substrate has an ejection energy generation element arranged to face the bubble generation chamber and a circulation energy generation element arranged at a different position to face the liquid circulation flow path. The gap between the ejection energy generation element and the ejection orifice forming member is different from the gap between the circulation energy generation element and the ejection orifice forming member.Type: GrantFiled: September 30, 2020Date of Patent: June 7, 2022Assignee: Canon Kabushiki KaishaInventor: Masataka Nagai
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Patent number: 11135841Abstract: A liquid discharge head includes a discharge port member including a discharge port, a flow path member including a pressure chamber and a liquid flow path, a substrate, and a structure that is arranged on the substrate on an upstream side of a center of the discharge port and that is configured to generate a flow of the liquid toward the discharge port. The liquid in the pressure chamber circulates. A position corresponding to a portion of the structure having a greatest height from a surface of the substrate is located on the upstream side of the center of the discharge port in a flow direction of the liquid. A thickness of the structure in a discharge direction of the liquid is 0.1 times or greater than a thickness of the liquid flow path in the discharge direction of the liquid.Type: GrantFiled: April 1, 2020Date of Patent: October 5, 2021Assignee: Canon Kabushiki KaishaInventors: Masataka Nagai, Masafumi Morisue, Koji Sasaki, Seiichiro Yaginuma, Shinji Kishikawa
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Publication number: 20210300049Abstract: A container for liquid replenishment for replenishing liquid in a liquid ejection apparatus comprises a container body capable of containing the liquid, a spout fitted to the container body and having a front end section including a front end surface and a liquid outlet for allowing the liquid to flow out therefrom, a lid member removably attached to the spout to cover the spout and a liquid absorber arranged on the spout. The liquid outlet is open in the front end surface of the spout and the liquid absorber is arranged at least on an area of the front end surface not occupied by the liquid outlet.Type: ApplicationFiled: March 23, 2021Publication date: September 30, 2021Inventor: Masataka Nagai
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Patent number: 11110719Abstract: In a liquid discharge head, a first pump and a second pump are arranged inside a channel, the channel includes a pressure chamber including an energy generating element, and liquid inside the pressure chamber is circulatable between inside and outside of the pressure chamber by the first pump or the second pump. The first pump is arranged on one side relative to a midpoint of the channel in an extending direction of the channel, and the second pump is arranged on another side relative to the midpoint of the channel in the extending direction of the channel.Type: GrantFiled: March 24, 2020Date of Patent: September 7, 2021Assignee: Canon Kabushiki KaishaInventors: Koji Sasaki, Masafumi Morisue, Seiichiro Yaginuma, Shinji Kishikawa, Masataka Nagai
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Publication number: 20210094295Abstract: A liquid ejection head includes an ejection orifice forming member having a liquid ejection orifice and a substrate having a liquid flow path such that a liquid circulation flow path is formed between the ejection orifice forming member and the substrate. The liquid circulation flow path includes a bubble generation chamber facing the liquid ejection orifice and is branched from the liquid flow path so as to pass through the bubble generation chamber and join the liquid flow path. The substrate has an ejection energy generation element arranged to face the bubble generation chamber and a circulation energy generation element arranged at a different position to face the liquid circulation flow path. The gap between the ejection energy generation element and the ejection orifice forming member is different from the gap between the circulation energy generation element and the ejection orifice forming member.Type: ApplicationFiled: September 30, 2020Publication date: April 1, 2021Inventor: Masataka Nagai
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Publication number: 20200331266Abstract: A liquid discharge head includes a discharge port member including a discharge port, a flow path member including a pressure chamber and a liquid flow path, a substrate, and a structure that is arranged on the substrate on an upstream side of a center of the discharge port and that is configured to generate a flow of the liquid toward the discharge port. The liquid in the pressure chamber circulates. A position corresponding to a portion of the structure having a greatest height from a surface of the substrate is located on the upstream side of the center of the discharge port in a flow direction of the liquid. A thickness of the structure in a discharge direction of the liquid is 0.1 times or greater than a thickness of the liquid flow path in the discharge direction of the liquid.Type: ApplicationFiled: April 1, 2020Publication date: October 22, 2020Inventors: Masataka Nagai, Masafumi Morisue, Koji Sasaki, Seiichiro Yaginuma, Shinji Kishikawa
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Publication number: 20200316956Abstract: In a liquid discharge head, a first pump and a second pump are arranged inside a channel, the channel includes a pressure chamber including an energy generating element, and liquid inside the pressure chamber is circulatable between inside and outside of the pressure chamber by the first pump or the second pump. The first pump is arranged on one side relative to a midpoint of the channel in an extending direction of the channel, and the second pump is arranged on another side relative to the midpoint of the channel in the extending direction of the channel.Type: ApplicationFiled: March 24, 2020Publication date: October 8, 2020Inventors: Koji Sasaki, Masafumi Morisue, Seiichiro Yaginuma, Shinji Kishikawa, Masataka Nagai
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Patent number: 10538090Abstract: A method for manufacturing a perforated substrate includes forming a through-hole extending through a substrate from a first surface to a second surface opposite the first surface; forming a film on the first surface, a sidewall of the through-hole, and the second surface; forming a resist on the first surface; patterning the resist such that the resist closes an opening of the through-hole in the first surface; etching the film on the first surface using the resist as a mask; before the etching step, forming an inspection member on the second surface such that the inspection member closes an opening of the through-hole in the second surface; and determining whether there is a film patterning defect or a flaw that causes a film patterning defect.Type: GrantFiled: November 17, 2017Date of Patent: January 21, 2020Assignee: Canon Kabushiki KaishaInventors: Seiichiro Yaginuma, Masataka Nagai, Masaya Uyama
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Patent number: 10500861Abstract: A method for manufacturing a liquid ejection head including providing a negative first photosensitive resin layer on the substrate, forming a pattern of the flow path by selectively exposing the first photosensitive resin layer, providing a negative second photosensitive resin layer on the first photosensitive resin layer, providing a negative third photosensitive resin layer on the second photosensitive resin layer, forming a pattern of the ejection port by selectively exposing the second and third photosensitive resin layers, developing the first, second, and third photosensitive resin layers, irradiating an activation energy line on at least the third photosensitive resin layer after the developing, and heat curing the first, second, and third photosensitive resin layers after the irradiating of the activation energy line.Type: GrantFiled: August 4, 2017Date of Patent: December 10, 2019Assignee: Canon Kabushiki KaishaInventors: Kunihito Uohashi, Shingo Nagata, Kenji Fujii, Jun Yamamuro, Koji Sasaki, Keiji Matsumoto, Seiichiro Yaginuma, Ryotaro Murakami, Tomohiko Nakano, Masataka Nagai
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Patent number: 10365563Abstract: Provided is a film formation method including the steps of: forming a resist film on an object to be applied, forming a layer of a protecting material removable by a first dissolving liquid on the upper surface of the resist film, removing the resist film from a region not having, on the upper surface thereof, the layer of the protecting material by side rinsing with a second dissolving liquid capable of dissolving the resist film therein, and removing the protecting material remaining on the upper surface of the resist film by the first dissolving liquid.Type: GrantFiled: August 1, 2018Date of Patent: July 30, 2019Assignee: CANON KABUSHIKI KAISHAInventors: Masataka Nagai, Seiichiro Yaginuma, Shingo Nagata
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Patent number: 10274826Abstract: A method for imparting water repellency to a surface of a member includes a step in which a material including a compound containing a fluorine atom is deposited on a surface of a photosensitive resin layer in order to form a member including a material layer; a first exposure step in which the member is exposed to an amount of light with an exposure apparatus in order to form a latent image in the member; a development step in which the member including the latent image is developed; and a second exposure step in which the member is exposed to an amount of light with an exposure apparatus subsequent to the development step.Type: GrantFiled: June 2, 2016Date of Patent: April 30, 2019Assignee: Canon Kabushiki KaishaInventors: Masataka Nagai, Yoshinori Tagawa, Shingo Nagata, Hiroyuki Murayama, Shuhei Oya, Makoto Watanabe
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Patent number: 10241410Abstract: A method for imparting water repellency to a surface of a member includes a step in which a material including a compound containing a fluorine atom is deposited on a surface of a photosensitive resin layer in order to form a member including a material layer; a first exposure step in which the member is exposed to an amount of light with an exposure apparatus in order to form a latent image in the member; a development step in which the member including the latent image is developed; and a second exposure step in which the member is exposed to an amount of light with an exposure apparatus subsequent to the development step.Type: GrantFiled: June 2, 2016Date of Patent: March 26, 2019Assignee: Canon Kabushiki KaishaInventors: Masataka Nagai, Yoshinori Tagawa, Shingo Nagata, Hiroyuki Murayama, Shuhei Oya, Makoto Watanabe
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Publication number: 20190049846Abstract: Provided is a film formation method including the steps of: forming a resist film on an object to be applied, forming a layer of a protecting material removable by a first dissolving liquid on the upper surface of the resist film, removing the resist film from a region not having, on the upper surface thereof, the layer of the protecting material by side rinsing with a second dissolving liquid capable of dissolving the resist film therein, and removing the protecting material remaining on the upper surface of the resist film by the first dissolving liquid.Type: ApplicationFiled: August 1, 2018Publication date: February 14, 2019Inventors: Masataka Nagai, Seiichiro Yaginuma, Shingo Nagata
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Publication number: 20180147849Abstract: A method for manufacturing a perforated substrate includes forming a through-hole extending through a substrate from a first surface to a second surface opposite the first surface; forming a film on the first surface, a sidewall of the through-hole, and the second surface; forming a resist on the first surface; patterning the resist such that the resist closes an opening of the through-hole in the first surface; etching the film on the first surface using the resist as a mask; before the etching step, forming an inspection member on the second surface such that the inspection member closes an opening of the through-hole in the second surface; and determining whether there is a film patterning defect or a flaw that causes a film patterning defect.Type: ApplicationFiled: November 17, 2017Publication date: May 31, 2018Inventors: Seiichiro Yaginuma, Masataka Nagai, Masaya Uyama
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Publication number: 20180043689Abstract: A method for manufacturing a liquid ejection head including providing a negative first photosensitive resin layer on the substrate, forming a pattern of the flow path by selectively exposing the first photosensitive resin layer, providing a negative second photosensitive resin layer on the first photosensitive resin layer, providing a negative third photosensitive resin layer on the second photosensitive resin layer, forming a pattern of the ejection port by selectively exposing the second and third photosensitive resin layers, developing the first, second, and third photosensitive resin layers, irradiating an activation energy line on at least the third photosensitive resin layer after the developing, and heat curing the first, second, and third photosensitive resin layers after the irradiating of the activation energy line.Type: ApplicationFiled: August 4, 2017Publication date: February 15, 2018Inventors: Kunihito Uohashi, Shingo Nagata, Kenji Fujii, Jun Yamamuro, Koji Sasaki, Keiji Matsumoto, Seiichiro Yaginuma, Ryotaro Murakami, Tomohiko Nakano, Masataka Nagai
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Publication number: 20160357106Abstract: A method for imparting water repellency to a surface of a member includes a step in which a material including a compound containing a fluorine atom is deposited on a surface of a photosensitive resin layer in order to form a member including a material layer; a first exposure step in which the member is exposed to an amount of light with an exposure apparatus in order to form a latent image in the member; a development step in which the member including the latent image is developed; and a second exposure step in which the member is exposed to an amount of light with an exposure apparatus subsequent to the development step.Type: ApplicationFiled: June 2, 2016Publication date: December 8, 2016Inventors: Masataka Nagai, Yoshinori Tagawa, Shingo Nagata, Hiroyuki Murayama, Shuhei Oya, Makoto Watanabe
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Patent number: 9266330Abstract: A process for producing a semiconductor chip having a substrate and a bump formed on the substrate including (1) forming, on a substrate, a conductor gold for plating to be a base of plating growth; (2) forming a mask for plating on the conductor gold for plating; (3) performing plating using the mask for plating to form the bump and a dummy pattern; (4) removing the mask for plating; (5) etching the conductor gold for plating; and (6) applying a shock to at least the dummy pattern. The amount of side etching of the conductor gold for plating is grasped from a state of separation of the dummy pattern due to the shock in the step (6).Type: GrantFiled: January 10, 2014Date of Patent: February 23, 2016Assignee: Canon Kabushiki KaishaInventors: Kenji Fujii, Mitsuru Chida, Makoto Watanabe, Toshiaki Kurosu, Masataka Nagai, Takanobu Manabe
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Patent number: 9162459Abstract: A liquid ejection head includes a substrate which has an energy-generating element that generates energy to be utilized for ejecting a liquid, and a supply orifice for supplying the liquid to the energy-generating element; and an ejection orifice forming member that has a plurality of ejection orifices through which the liquid is ejected, and at least one beam-like projection which projects toward the substrate and extends along an array direction of the ejection orifices at a position corresponding to the supply orifice. A sectional area perpendicular to the array direction of the ejection orifices at the central part of the beam-like projection in the array direction of the ejection orifices is larger than a sectional area in the direction perpendicular to the array direction of the ejection orifices at both ends of the beam-like projection in the array direction.Type: GrantFiled: March 28, 2014Date of Patent: October 20, 2015Assignee: Canon Kabushiki KaishaInventors: Masataka Nagai, Yoshinori Tagawa, Jun Yamamuro, Kenji Fujii, Mitsuru Chida, Makoto Watanabe, Toshiaki Kurosu, Takanobu Manabe