Patents by Inventor Kazuma Ito
Kazuma 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).
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Publication number: 20250213904Abstract: A sprinkler head includes a recess provided in a nozzle-side surface of a deflector a first slit provided on each side of the recess in a width direction thereof and having an open end provided adjacent to an outer edge of the recess; a plurality of second slits having open ends provided along the outer edge of the deflector, on an opposite side of the first slit in a width direction thereof from the recess, and closed ends provided away from an outer edge of the valve cap; and a plurality of third slits having open ends provided along the outer edge of the deflector, on an opposite side of the second slits in a width direction thereof from the first slit, and closed ends provided further away from the outer edge of the valve cap than are the closed ends of the second slits.Type: ApplicationFiled: April 4, 2022Publication date: July 3, 2025Applicant: SENJU SPRINKLER CO., LTD.Inventors: Masaharu CHIBA, Yoshiki SASAKI, Kazuma ITO
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Patent number: 12239867Abstract: A cylindrical portion forms, at a first holding position, a first airflow path in which a communication portion open to a lower end of the body serves as a first introduction port for the outside air and in which a missing portion lacking a portion of a surrounding wall of the cylindrical portion serves as, by overlapping a slit open to an outer peripheral surface of the body, a first exit through which the outside air flowed in the body is discharged to above the ceiling, and forms, at a second holding position, a second airflow path in which a gap formed between an escutcheon and a heat collector projecting from the lower end of the body serves as a second introduction port for the outside air and in which the missing portion serves as a second exit through which the outside air is discharged to above the ceiling.Type: GrantFiled: December 23, 2020Date of Patent: March 4, 2025Assignee: SENJU SPRINKLER CO., LTD.Inventors: Masaharu Chiba, Yutaka Tateishi, Kazuma Ito
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Publication number: 20250043406Abstract: Provided is a hot stamped body having a chemical composition comprising, by mass %, C: 0.40 to 0.70%, P: 0.100% or less, S: 0.0100% or less, N: 0.0200% or less, O: 0.0200% or less, Al: 0.0010 to 0.500%, Nb: 0.0010 to 0.100%, Ti: 0.010 to 0.200%, Mo: 0.010 to 2.000%, B: 0.0005 to 0.0200%, etc., and balance of Fe and impurities, and a microstructure with a total amount of segregation of at least one of Mo, W, Ta, Re, Os, Ir, and Tc at prior austenite grain boundaries of 0.10 atm % or more.Type: ApplicationFiled: March 2, 2023Publication date: February 6, 2025Applicant: NIPPON STEEL CORPORATIONInventors: Kazuma ITO, Shinichiro TABATA, Yuri TODA
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Publication number: 20250034686Abstract: Provided is a hot stamped body having a predetermined chemical composition and a microstructure comprising, by area ratio, at least one of martensite, bainite, and tempered martensite: 90% or more in total, wherein a standard deviation in grain size distribution of former austenite grains is 5.0 ?m or less, and a total amount of segregation of at least one of Mo, W, Ta, Re, Os, Ir, and Tc at the former austenite grain boundaries is 0.10 atm % or more.Type: ApplicationFiled: March 2, 2023Publication date: January 30, 2025Applicant: NIPPON STEEL CORPORATIONInventors: Yuri TODA, Kazuma ITO, Yuma ASADA
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Patent number: 12158444Abstract: A gas sensor element includes a solid electrolyte body, a first electrode, a second electrode, and a protective layer. The protective layer includes at least a first catalyst layer that supports a first catalyst metal other than a metal facilitating a reduction reaction of nitrogen oxide and a second catalyst layer that supports only a second catalyst metal facilitating the reduction reaction of the nitrogen oxide. The first catalyst layer and the second catalyst layer are arranged in a path through which a gas under measurement is supplied from the outside of the gas sensor element to the first electrode in such a manner that the first catalyst layer and the second catalyst layer are not in direct contact with each other.Type: GrantFiled: July 12, 2019Date of Patent: December 3, 2024Assignee: NITERRA CO., LTD.Inventors: Kazuma Ito, Takanori Ishikawa, Hiroshi Isomura
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Publication number: 20240210458Abstract: A characteristics measurement device for an object according to the invention comprises a sound wave generator that emits a sound wave; a receiver that receives from the object an electromagnetic field generated by the sound wave being irradiated to the object; a sound wave medium between the sound wave generator and the object the electromagnetic field separated from a reverberating electromagnetic field caused by reverberating vibrations of the sound wave generator in time; an inverse diffuse that inversely diffuses the electromagnetic field received by the receiver using a reference signal associated with the sound wave; and a measurement unit that extracts at least one characteristic selected from a group consisting of electrical characteristics, magnetic characteristics, electromechanical characteristics and magnetomechanical characteristics of the object based on at least one measurement selected from a group consisting of intensity, phase and frequency of the inversely diffused electromagnetic field.Type: ApplicationFiled: February 7, 2024Publication date: June 27, 2024Inventors: Kazuma ITO, Nobuo NIIMI, Kenji IKUSHIMA
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Publication number: 20240198154Abstract: To provide a sprinkler head in which the amount of water sprinkled in a direction in which a pin supporting a deflector is provided is increased. Included are: a body having a nozzle through which a fire-extinguishing liquid is discharged; a disk-like deflector that sprinkles the fire-extinguishing liquid discharged from the nozzle outward in a direction intersecting the axis of the nozzle; and a support that supports the deflector. A nozzle-side surface of the deflector has a recess extending from a portion around the support toward an outer edge of the deflector and recessed into the nozzle-side surface of the deflector. First slits are provided on both sides of the recess in the width direction such that open ends are adjacent to the outer edge of the recess.Type: ApplicationFiled: March 30, 2022Publication date: June 20, 2024Applicant: SENJU SPRINKLER CO., LTD.Inventors: Masaharu Chiba, Yoshiki Sasaki, Kazuma Ito
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Publication number: 20230369534Abstract: A semiconductor light emitting element includes: a growth substrate; a mask formed on the growth substrate; and a columnar semiconductor layer grown from at least one opening that is provided in the mask. The columnar semiconductor layer includes an n-type nanowire layer formed at a center thereof, an active layer formed on an outer periphery of the n-type nanowire layer, and a p-type semiconductor layer formed on an outer periphery of the active layer. An opening ratio of the opening is 0.1% or more and 5.0% or less, and a light emission wavelength is 480 nm or more.Type: ApplicationFiled: August 25, 2021Publication date: November 16, 2023Applicants: KOITO MANUFACTURING CO., LTD., MEIJO UNIVERSITYInventors: Satoshi KAMIYAMA, Tetsuya TAKEUCHI, Motoaki lWAYA, Isamu AKASAKI, Weifang LU, Kazuma ITO, Naoki SONE
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Publication number: 20230038975Abstract: A cylindrical portion forms, at a first holding position, a first airflow path in which a communication portion open to a lower end of the body serves as a first introduction port for the outside air and in which a missing portion lacking a portion of a surrounding wall of the cylindrical portion serves as, by overlapping a slit open to an outer peripheral surface of the body, a first exit through which the outside air flowed in the body is discharged to above the ceiling, and forms, at a second holding position, a second airflow path in which a gap formed between an escutcheon and a heat collector projecting from the lower end of the body serves as a second introduction port for the outside air and in which the missing portion serves as a second exit through which the outside air is discharged to above the ceiling.Type: ApplicationFiled: December 23, 2020Publication date: February 9, 2023Applicant: SENJU SPRINKLER CO., LTD.Inventors: Masaharu Chiba, Yutaka Tateishi, Kazuma Ito
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Publication number: 20220214303Abstract: A method for manufacturing a gas sensor element (100) including a solid electrolyte (110) and an electrode (130) formed on a surface (110a) of the solid electrolyte (110). The method includes: a slurry application step S3 of forming a first slurry layer (13) by applying a first slurry containing monoclinic zirconia and tetragonal/cubic zirconia to the surface (110a) of the solid electrolyte (110); a heat treatment step S4 of forming a base layer (14) by a heat treating the solid electrolyte (110) having the first slurry layer (13) formed thereon; and a plating step S5 of forming the electrode (130) by plating the base layer (14) using a plating solution containing a noble metal.Type: ApplicationFiled: April 24, 2020Publication date: July 7, 2022Applicant: NGK SPARK PLUG CO., LTD.Inventor: Kazuma ITO
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Publication number: 20220074887Abstract: A gas sensor element includes a solid electrolyte body, a first electrode, a second electrode, and a protective layer. The protective layer includes at least a first catalyst layer that supports a first catalyst metal other than a metal facilitating a reduction reaction of nitrogen oxide and a second catalyst layer that supports only a second catalyst metal facilitating the reduction reaction of the nitrogen oxide. The first catalyst layer and the second catalyst layer are arranged in a path through which a gas under measurement is supplied from the outside of the gas sensor element to the first electrode in such a manner that the first catalyst layer and the second catalyst layer are not in direct contact with each other.Type: ApplicationFiled: July 12, 2019Publication date: March 10, 2022Applicant: NGK Spark Plug Co., LTD.Inventors: Kazuma ITO, Takanori ISHIKAWA, Hiroshi ISOMURA
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Patent number: 10352893Abstract: A gas sensor control apparatus including a gas sensor element, a heater for heating the gas sensor element, and heater energization control means for feedback controlling the supply of electric current to the heater such that the internal resistance of the gas sensor element coincides with a target resistance. The gas sensor element has a solid electrolyte member and an electrode portion including an outside electrode and an inside electrode. At least a portion of the electrode portion is formed of an electrically conductive oxide whose main component is (i) a first perovskite phase which is represented by a composition formula of LaCo1?xNixO3±d (0.300?x?0.600, 0?d?0.4) and has a perovskite-type crystal structure, or (ii) a second perovskite phase which is represented by a composition formula of LaFe1?yNiyO3±d (0.450?y?0.700, 0?d?0.4) and has a perovskite-type crystal structure.Type: GrantFiled: August 29, 2016Date of Patent: July 16, 2019Assignee: NGK SPARK PLUG CO., LTD.Inventors: Keisuke Nakagawa, Shigehiro Ohtsuka, Hisashi Kozuka, Kazuma Ito, Ippei Kato
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Patent number: 10012612Abstract: An inside lead portion of a gas sensor element has a lanthanum zirconate layer arranged between an electrically conductive oxide layer and a solid electrolyte member. Meanwhile, an inside detection electrode portion of the gas sensor element is formed such that (i) no lanthanum zirconate layer is formed between an electrically conductive oxide layer and the solid electrolyte member, or (ii) a lanthanum zirconate layer thinner than the lanthanum zirconate layer of the inside lead portion is formed between the electrically conductive oxide layer and the solid electrolyte member.Type: GrantFiled: July 12, 2016Date of Patent: July 3, 2018Assignee: NGK SPARK PLUG CO., LTD.Inventors: Shigehiro Ohtsuka, Tomohiro Nishi, Keisuke Nakagawa, Kazuma Ito, Ippei Kato
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Publication number: 20170059511Abstract: A gas sensor control apparatus including a gas sensor element, a heater for heating the gas sensor element, and heater energization control means for feedback controlling the supply of electric current to the heater such that the internal resistance of the gas sensor element coincides with a target resistance. The gas sensor element has a solid electrolyte member and an electrode portion including an outside electrode and an inside electrode. At least a portion of the electrode portion is formed of an electrically conductive oxide whose main component is (i) a first perovskite phase which is represented by a composition formula of LaCo1-xNixO3±d (0.300?x?0.600, 0?d?0.4) and has a perovskite-type crystal structure, or (ii) a second perovskite phase which is represented by a composition formula of LaFe1-yNiyO3±d (0.450?y?0.700, 0?d?0.4) and has a perovskite-type crystal structure.Type: ApplicationFiled: August 29, 2016Publication date: March 2, 2017Applicant: NGK SPARK PLUG CO., LTD.Inventors: Keisuke NAKAGAWA, Shigehiro OHTSUKA, Hisashi KOZUKA, Kazuma ITO, Ippei KATO
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Publication number: 20170016849Abstract: An inside lead portion of a gas sensor element has a lanthanum zirconate layer arranged between an electrically conductive oxide layer and a solid electrolyte member. Meanwhile, an inside detection electrode portion of the gas sensor element is formed such that (i) no lanthanum zirconate layer is formed between an electrically conductive oxide layer and the solid electrolyte member, or (ii) a lanthanum zirconate layer thinner than the lanthanum zirconate layer of the inside lead portion is formed between the electrically conductive oxide layer and the solid electrolyte member.Type: ApplicationFiled: July 12, 2016Publication date: January 19, 2017Applicant: NGK SPARK PLUG CO., LTD.Inventors: Shigehiro OHTSUKA, Tomohiro NISHI, Keisuke NAKAGAWA, Kazuma ITO, Ippei KATO
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Patent number: 8439569Abstract: A highly reliable combined bearing capable of achieving equal and sufficient lubrication of a plurality of roller bearings with a simple and compact structure is provided. The combined bearing includes a first roller bearing and a second roller bearing which are in contact with each other and arranged on the same axis. A lubricating oil inlet introduces a lubricating oil into an inner space formed between the first roller bearing and the second roller bearing, the lubricating-oil inlet being provided on at least one of an outer ring of the first rolling bearing and an outer ring of the second rolling bearing.Type: GrantFiled: October 29, 2010Date of Patent: May 14, 2013Assignee: Ebara CorporationInventors: Kazuma Ito, Kazuyuki Tatsuta, Tetsuro Sugiura
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Publication number: 20110103986Abstract: A highly reliable combined bearing capable of achieving equal and sufficient lubrication of a plurality of rolling bearings with a simple and compact structure is provided. The combined bearing includes a first rolling bearing and a second rolling bearing which are in contact with each other and arranged on the same axis; and a lubricating-oil inlet for introducing a lubricating oil into an inner space formed between the first rolling bearing and the second rolling bearing, the lubricating-oil inlet being provided on at least one of an outer ring of the first rolling bearing and an outer ring of the second rolling bearing.Type: ApplicationFiled: October 29, 2010Publication date: May 5, 2011Inventors: Kazuma ITO, Kazuyuki Tatsuta, Tetsuro Sugiura
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Patent number: D660890Type: GrantFiled: March 29, 2010Date of Patent: May 29, 2012Assignees: Ebara Corporation, Ebara Field Tech. CorporationInventors: Kazuma Ito, Kazuyuki Tatsuta, Tetsuro Sugiura
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Patent number: D972079Type: GrantFiled: May 12, 2020Date of Patent: December 6, 2022Assignee: SENJU SPRINKLER CO., LTD.Inventors: Masaharu Chiba, Yutaka Tateishi, Kazuma Ito
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Patent number: D991399Type: GrantFiled: October 26, 2021Date of Patent: July 4, 2023Assignee: SENJU SPRINKLER CO., LTD.Inventors: Masaharu Chiba, Yoshiki Sasaki, Kazuma Ito