Patents by Inventor Hiroshi Koshikawa
Hiroshi Koshikawa 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: 20230330998Abstract: A liquid ejection apparatus is equipped with a liquid ejection head configured to eject a supplied liquid, a storage unit configured to store the liquid to be supplied to the liquid ejection head, a pivot member configured to be dipped in the stored liquid in the storage unit and be revolvable according to the amount of the liquid, and a detection unit configured to detect the amount of the liquid by use of the pivot member, wherein the arrangement position of the detection unit differs according to the specific gravity of the liquid stored in the storage unit.Type: ApplicationFiled: April 4, 2023Publication date: October 19, 2023Inventors: AKANE HISANAGA, HIROSHI YAMADA, HIROSHI KOSHIKAWA
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Patent number: 11660873Abstract: A technique with which deterioration in a function of detecting the remaining amount of liquid can be prevented even in a case where the liquid is thickened or solidified is to be provided. A liquid ejection apparatus is provided with a liquid ejection head configured to eject supplied liquid, a storage unit configured to store the liquid to be supplied to the liquid ejection head, a pivot member configured to be immersed in the liquid stored in the storage unit and be revolvable according to the amount of the liquid, and a detection unit configured to detect the amount of the liquid by use of the pivot member, and the liquid ejection apparatus includes a pivot unit configured to force the pivot member to pivotally move.Type: GrantFiled: March 22, 2021Date of Patent: May 30, 2023Assignee: Canon Kabushiki KaishaInventors: Hiroshi Koshikawa, Hiroki Hayashi, Hiroshi Yamada, Yasunori Takei
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Publication number: 20230135411Abstract: There is provided a technique that enables correct detection of the remaining amount of liquid such as ink. A liquid ejection apparatus has a liquid ejection head which ejects a supplied liquid, a storage unit which stores a liquid to be supplied to the liquid ejection head, a pivot member which is immersed in a liquid stored in the storage unit and is pivotally movable according to an amount of the liquid, and a detection unit which detects the amount of the liquid using the pivot member, wherein at least one of a specific gravity and size of the pivot member differs according to a specific gravity of a liquid stored in the storage unit.Type: ApplicationFiled: October 14, 2022Publication date: May 4, 2023Inventor: Hiroshi Koshikawa
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Publication number: 20230139685Abstract: There is provided a technique that enables correct detection of the remaining amount of liquid such as ink. A liquid ejection apparatus has a liquid ejection head which ejects a supplied liquid, a storage unit which stores a liquid to be supplied to the liquid ejection head, a pivot member which is immersed in a liquid stored in the storage unit and is pivotally movable according to an amount of the liquid, and a detection unit which detects the amount of the liquid using the pivot member, wherein a pivot position of the pivot member differs according to a specific gravity of a liquid stored in the storage unit.Type: ApplicationFiled: September 28, 2022Publication date: May 4, 2023Inventor: Hiroshi Koshikawa
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Publication number: 20230001701Abstract: A liquid supply apparatus includes a liquid storage tank in communication with a liquid ejecting head that ejects liquid and a cartridge configured to be detachably provided to the liquid storage tank. The liquid storage tank includes an atmosphere communication portion in communication with the atmosphere and a first connecting portion that, in a state where the cartridge is attached to the liquid storage tank, enables the cartridge to be in liquid communication with the liquid storage tank. The liquid storage tank also includes a second connecting portion that, in the state where the cartridge is attached to the liquid storage tank, is connected to the cartridge so as to be liquid-tight with the cartridge and enables the cartridge to be in gaseous communication with the atmosphere communication portion.Type: ApplicationFiled: September 14, 2022Publication date: January 5, 2023Inventors: Yasunori TAKEI, Hiroki HAYASHI, Hiroshi KOSHIKAWA
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Patent number: 11472191Abstract: A liquid supply apparatus includes a liquid storage tank in communication with a liquid ejecting head that ejects liquid and a cartridge configured to be detachably provided to the liquid storage tank. The liquid storage tank includes an atmosphere communication portion in communication with the atmosphere and a first connecting portion that, in a state where the cartridge is attached to the liquid storage tank, enables the cartridge to be in liquid communication with the liquid storage tank. The liquid storage tank also includes a second connecting portion that, in the state where the cartridge is attached to the liquid storage tank, is connected to the cartridge so as to be liquid-tight with the cartridge and enables the cartridge to be in gaseous communication with the atmosphere communication portion.Type: GrantFiled: March 22, 2021Date of Patent: October 18, 2022Assignee: Canon Kabushiki KaishaInventors: Yasunori Takei, Hiroki Hayashi, Hiroshi Koshikawa
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Patent number: 11383519Abstract: A liquid storage bottle includes a bottle body having a resin-made first cylindrical part at one end, the first cylindrical part having an opening at its front end, and a tubular nozzle for pouring out the liquid contained in the inside of the bottle body by way of the opening, the tubular nozzle having a resin-made second cylindrical part bonded to the bottle body. The inner peripheral surface of the second cylindrical part is welded to the outer peripheral surface of the first cylindrical part. The outer peripheral surface of the first cylindrical part is provided with an annular groove extending in the circumferential direction and the annular groove is made to contain a part of the resin that is molten during the bonding operation.Type: GrantFiled: March 16, 2020Date of Patent: July 12, 2022Assignee: Canon Kabushiki KaishaInventors: Manabu Ohara, Kenta Udagawa, Hiroki Hayashi, Hiroshi Koshikawa, Noriyasu Nagai, Shoki Takiguchi
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Publication number: 20220163450Abstract: The present invention provides a device (1) for detecting contamination with a photosynthesis inhibitor, the device including a collection device (10) configured to collect a test liquid, a light-blocking pretreatment tank (21) configured to store the test liquid (2) collected by the collection device in a state of containing phytoplankton, a stirring device configured to maintain a floating state of the phytoplankton in the test liquid stored in the pretreatment tank, an irradiation light source configured to irradiate the phytoplankton in the test liquid stored in the pretreatment tank with weak light having an underwater photon flux density that does not cause photoinhibition, a drainage conduit (40) configured to allow the test liquid discharged from the pretreatment tank to flow thereinto, and a fluorescence quantum efficiency measuring machine (50) provided for the drainage conduit and configured to measure a fluorescence quantum efficiency of the phytoplankton in the test liquid discharged from the preType: ApplicationFiled: February 6, 2020Publication date: May 26, 2022Applicants: National Institute for Environmental Studies, Japan Agency for Marine-Earth Science and TechnologyInventors: Hiroshi Koshikawa, Masanobu Kawachi, Shigeshi Fuchida, Shuhei Ota, Tetsuya Miwa, Yasuo Furushima, Shunsuke Kondo
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Patent number: 11273648Abstract: A liquid storage bottle includes a bottle main body having a first cylindrical portion formed of a resin and a nozzle and has a second cylindrical portion formed of a resin and welded to the first cylindrical portion on an outer peripheral side of the first cylindrical portion. The first cylindrical portion includes an outer peripheral surface and a first annular surface extending radially outward from an axial end portion of the outer peripheral surface, the second cylindrical portion includes an inner peripheral surface facing the outer peripheral surface of the first cylindrical portion and a second annular surface which extends radially outward from an axial end portion of the inner peripheral surface and faces the first annular surface of the first cylindrical portion, and a peripheral wall portion extending in an axial direction is formed radially outside the second annular surfaces.Type: GrantFiled: March 23, 2020Date of Patent: March 15, 2022Assignee: Canon Kabushiki KaishaInventors: Noriyasu Nagai, Kenta Udagawa, Hiroki Hayashi, Hiroshi Koshikawa, Manabu Ohara, Shoki Takiguchi
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Publication number: 20210300055Abstract: A technique with which deterioration in a function of detecting the remaining amount of liquid can be prevented even in a case where the liquid is thickened or solidified is to be provided. A liquid ejection apparatus is provided with a liquid ejection head configured to eject supplied liquid, a storage unit configured to store the liquid to be supplied to the liquid ejection head, a pivot member configured to be immersed in the liquid stored in the storage unit and be revolvable according to the amount of the liquid, and a detection unit configured to detect the amount of the liquid by use of the pivot member, and the liquid ejection apparatus includes a pivot unit configured to force the pivot member to pivotally move.Type: ApplicationFiled: March 22, 2021Publication date: September 30, 2021Inventors: Hiroshi KOSHIKAWA, Hiroki HAYASHI, Hiroshi YAMADA, Yasunori TAKEI
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Publication number: 20210300052Abstract: A liquid supply apparatus includes a liquid storage tank in communication with a liquid ejecting head that ejects liquid and a cartridge configured to be detachably provided to the liquid storage tank. The liquid storage tank includes an atmosphere communication portion in communication with the atmosphere and a first connecting portion that, in a state where the cartridge is attached to the liquid storage tank, enables the cartridge to be in liquid communication with the liquid storage tank. The liquid storage tank also includes a second connecting portion that, in the state where the cartridge is attached to the liquid storage tank, is connected to the cartridge so as to be liquid-tight with the cartridge and enables the cartridge to be in gaseous communication with the atmosphere communication portion.Type: ApplicationFiled: March 22, 2021Publication date: September 30, 2021Inventors: Yasunori TAKEI, Hiroki HAYASHI, Hiroshi KOSHIKAWA
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Patent number: 11111061Abstract: A liquid storage bottle includes a nozzle which has an inlet through which a liquid is injected, a cylindrical cap which is mountable on the nozzle to open or close the inlet, a slit valve which is provided in the inlet and includes a plurality of slits intersecting each other, and a sealing unit which seals the inlet when the cap is mounted on the nozzle. The cap includes a protrusion which protrudes from a surface facing the inlet toward the slit valve when the cap is mounted on the nozzle, and a tip portion of the protrusion faces the slit valve at a position separated in a radial direction of the nozzle from an intersection of the plurality of slits in a state where the inlet is sealed by the sealing unit.Type: GrantFiled: March 23, 2020Date of Patent: September 7, 2021Assignee: Canon Kabushiki KaishaInventors: Noriyasu Nagai, Kenta Udagawa, Hiroshi Koshikawa, Hiroki Hayashi, Manabu Ohara, Shoki Takiguchi
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Patent number: 11090944Abstract: A liquid storage bottle includes a bottle main body, a nozzle having a discharge port through which a liquid stored in the bottle main body is discharged, a cap mountable on the nozzle and a sealing unit sealing the discharge port when the cap is mounted on the nozzle. The sealing unit includes an annular first rib, an annular second rib and an annular third rib. The outer peripheral surface of the first rib is inclined with respect to the axial direction of the nozzle so that a diameter decreases toward a tip portion of the first rib and the inner peripheral surface of the third rib is inclined with respect to the axial direction of the cap so that a diameter increases toward a tip portion of the third rib.Type: GrantFiled: March 18, 2020Date of Patent: August 17, 2021Assignee: Canon Kabushiki KaishaInventors: Shoki Takiguchi, Kenta Udagawa, Hiroki Hayashi, Hiroshi Koshikawa, Noriyasu Nagai, Manabu Ohara
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Patent number: 10994548Abstract: Provided is a technique that enables openings for injecting liquid to be sealed with a simple and low-cost configuration. A liquid reservoir container includes: a reservoir portion configured to contain liquid in an inside of the reservoir portion and having multiple openings communicating with the inside; a supply portion connected to at least one of the openings and configured to supply liquid to the reservoir portion from a tank reserving the liquid via a flow path; and a sheet member. The liquid reservoir container supplies liquid reserved in the reservoir portion to an ejecting portion configured to eject liquid, and the sheet member is attached to the reservoir portion so as to seal an opening to which the supply portion is not connected of the multiple openings.Type: GrantFiled: August 9, 2019Date of Patent: May 4, 2021Assignee: Canon Kabushiki KaishaInventors: Keisuke Iinuma, Kenta Udagawa, Tatsuo Nanjo, Hiroshi Koshikawa
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Patent number: 10967643Abstract: Provided is a liquid ejecting apparatus comprising: a cartridge capable of ejecting a liquid stored therein; a flow channel through which the cartridge and a liquid tank capable of supplying the liquid to the cartridge are in fluid communication with each other; a closing unit capable of closing the flow channel; and a movable member configured to be operated before the cartridge and the flow channel are uncoupled. The closing unit comprises a closing member, and closes the flow channel with the closing member moved with movement of the movable member. The liquid ejecting apparatus further comprises a carriage capable of carrying the cartridge and moving during liquid ejection of the cartridge. The movable member is a covering member provided to the carriage and configured to cover the cartridge, and in replacement of the cartridge, the movable member is removed from covering the cartridge to allow access to the cartridge.Type: GrantFiled: September 4, 2019Date of Patent: April 6, 2021Assignee: Canon Kabushiki KaishaInventors: Tatsuo Nanjo, Kenta Udagawa, Hiroshi Koshikawa, Keisuke Iinuma
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Publication number: 20200307230Abstract: A liquid storage bottle includes a bottle main body having a first cylindrical portion formed of a resin and a nozzle and has a second cylindrical portion formed of a resin and welded to the first cylindrical portion on an outer peripheral side of the first cylindrical portion. The first cylindrical portion includes an outer peripheral surface and a first annular surface extending radially outward from an axial end portion of the outer peripheral surface, the second cylindrical portion includes an inner peripheral surface facing the outer peripheral surface of the first cylindrical portion and a second annular surface which extends radially outward from an axial end portion of the inner peripheral surface and faces the first annular surface of the first cylindrical portion, and a peripheral wall portion extending in an axial direction is formed radially outside the second annular surfaces.Type: ApplicationFiled: March 23, 2020Publication date: October 1, 2020Inventors: Noriyasu Nagai, Kenta Udagawa, Hiroki Hayashi, Hiroshi Koshikawa, Manabu Ohara, Shoki Takiguchi
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Patent number: D925647Type: GrantFiled: October 2, 2019Date of Patent: July 20, 2021Inventors: Hitomi Ogasawara, Manabu Ohara, Shoki Takiguchi, Akihisa Shiozaki, Hiroki Hayashi, Noriyasu Nagai, Hiroshi Koshikawa, Kenta Udagawa
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Patent number: D936140Type: GrantFiled: April 16, 2021Date of Patent: November 16, 2021Assignee: Canon Kabushiki KaishaInventors: Manabu Ohara, Hitomi Ogasawara, Noriyasu Nagai, Hiroshi Koshikawa, Akihisa Shiozaki, Kenta Udagawa, Hiroki Hayashi, Shoki Takiguchi
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Patent number: D936141Type: GrantFiled: April 16, 2021Date of Patent: November 16, 2021Assignee: Canon Kabushiki KaishaInventors: Manabu Ohara, Shoki Takiguchi, Kenta Udagawa, Hiroki Hayashi, Noriyasu Nagai, Hiroshi Koshikawa
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Patent number: D982073Type: GrantFiled: April 16, 2021Date of Patent: March 28, 2023Assignee: Canon Kabushiki KaishaInventors: Kenta Udagawa, Hiroshi Koshikawa, Hiroki Hayashi, Noriyasu Nagai, Manabu Ohara, Shoki Takiguchi