Patents by Inventor Kazuki Matsubara
Kazuki Matsubara 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).
-
Publication number: 20240150862Abstract: A steel pipe for high-pressure hydrogen, the steel pipe having a chemical composition containing, by mass %, C: 0.05% to 0.60%, Si: 0.001% to 2.0%, Mn: 0.01% to 5.0%, P: 0.030% or less, S: 0.010% or less, N: 0.010% or less, Al: 0.0001% to 1.00%, 0: 0.010% or less, H: 0.00010% or less, and a balance of Fe and incidental impurities and a metallic microstructure including, in terms of area fraction, 3% or less (including 0%) of retained austenite, in which the number of inclusions having an aspect ratio of 2.0 or more and a length of 10 ?m or more is 15/100 mm2 or less.Type: ApplicationFiled: March 16, 2022Publication date: May 9, 2024Applicant: JFE Steel CorporationInventors: Kazuki Matsubara, Shusaku Takagi, Hiroshi Okano
-
Publication number: 20240035593Abstract: To alleviate stress exerted on a thread portion of a threaded steel pipe or tube during use to prevent fatigue fracture, there is provided a threaded steel pipe or tube having a female thread portion on an inner peripheral surface of at least one end, wherein a maximum value of residual compressive stress at a position of 0.4 mm in a depth direction from a thread bottom of the female thread portion is 100 MPa or more and less than or equal to tensile strength of a material of the threaded steel pipe or tube.Type: ApplicationFiled: November 2, 2021Publication date: February 1, 2024Applicant: JFE STEEL CORPORATIONInventors: Hiroshi OKANO, Kazuki MATSUBARA, Shusaku TAKAGI, Nobuyuki ISHIKAWA
-
Publication number: 20240027023Abstract: A high-pressure hydrogen container includes: a cylinder body; and a lid member that closes an end portion of the cylinder body. The cylinder body includes: a joining portion that fixes the lid member; a cylinder portion that forms an outer shell of a storage portion; and a sealing surface formed at an inner surface of the cylinder body. At least H<K is satisfied, where an area of the sealing surface which the sealing portion abuts is an abutting area, H is a thickness from the abutting area to an outer surface of the cylinder body, part of the cylinder body in which a stress greater than or equal to a predetermined stress ? is generated is a stress generation portion, and L is a distance between the abutting area and the stress generation portion.Type: ApplicationFiled: January 28, 2022Publication date: January 25, 2024Applicant: JFE STEEL CORPORATIONInventors: Hiroshi OKANO, Kazuki MATSUBARA, Shusaku TAKAGI, Nobuyuki ISHIKAWA, Toshio TAKANO
-
Publication number: 20240027022Abstract: Provided is a steel pipe or tube for hydrogen gas that has both excellent hydrogen embrittlement resistance and high productivity and can be used very suitably as parts of pressure vessels for hydrogen gas. The steel pipe or tube for hydrogen gas having a finish-polished inner surface, in which the inclination angle of a polishing trace present on the inner surface with respect to a circumferential direction of the steel pipe or tube for hydrogen gas is 0° to 30°.Type: ApplicationFiled: October 18, 2021Publication date: January 25, 2024Applicant: JFE STEEL CORPORATIONInventors: Kazuki MATSUBARA, Hiroshi OKANO, Shusaku TAKAGI
-
Publication number: 20240003491Abstract: To alleviate stress exerted on a thread portion of a high pressure gas container including a metallic container to prevent fatigue fracture, there is provided a high pressure gas container comprising a metallic container, wherein the metallic container includes: a metallic cylinder; a female thread portion on an inner peripheral surface of the metallic cylinder at at least one end; and a lid having, on an outer peripheral surface, a male thread portion configured to screw into the female thread portion, and a maximum value of residual compressive stress at a position of 0.4 mm in a depth direction from a plurality of thread bottoms of the female thread portion and the male thread portion is 100 MPa or more, less than or equal to tensile strength of a material of the metallic cylinder, and less than or equal to tensile strength of a material of the lid.Type: ApplicationFiled: November 2, 2021Publication date: January 4, 2024Applicant: JFE STEEL CORPORATIONInventors: Hiroshi OKANO, Kazuki MATSUBARA, Shusaku TAKAGI, Nobuyuki ISHIKAWA, Toshio TAKANO
-
Patent number: 11788687Abstract: A method of manufacturing a pressure accumulator, using an AE signal for the pressure accumulator, includes: a first estimation step of estimating with an AE sensor provided at the pressure accumulator, a range of stress levels at each of which a damage AE signal that is generated from the pressure accumulator because of damage of material of the pressure accumulator is in a predetermined state; and a first design step of designing the pressure accumulator such that a minimum thickness of the pressure accumulator is determined based on the stress level range estimated in the first estimation step.Type: GrantFiled: June 21, 2019Date of Patent: October 17, 2023Assignee: JFE Steel CorporationInventors: Hiroshi Okano, Akihide Nagao, Nobuyuki Ishikawa, Kazuki Matsubara, Toshio Takano
-
Publication number: 20230175646Abstract: A high-pressure hydrogen container is provided that has a simple configuration, requiring less labor for manufacture, achieving reduced manufacturing costs, and ensuring pressure resistance. The high-pressure hydrogen container includes a metal cylinder configured to store high-pressure hydrogen, a pair of lid parts configured to cover both end portions of the metal cylinder, and a plurality of fastening parts configured to fix the pair of lid parts in a state where the metal cylinder is clamped between the pair of lid parts.Type: ApplicationFiled: April 19, 2021Publication date: June 8, 2023Applicant: JFE STEEL CORPORATIONInventors: Toshio TAKANO, Hiroshi OKANO, Kotaro KADOTA, Shusaku TAKAGI, Kazuki MATSUBARA
-
Patent number: 11541420Abstract: A method for forming a multilayer coated film includes step (1) of applying an aqueous intermediate coating composition (A), step (2) of applying an aqueous base coating composition (B), step (3) of applying a clear coating composition (C), and step (4) of heat-curing the coated films. The coating composition (A) contains a specific hydroxyl group-containing acrylic resin (a1), a specific polyurethane resin (a2), a specific hydroxyl group-containing polyester resin (a3), a melamine resin (a4), and an active methylene-blocked polyisocyanate compound (a5). A ratio of the resin (a1) to the resin (a2) falls within a specific range. The heat-cured coated film of the coating composition (A) has a specific elongation at break, Young's modulus and Tukon hardness. The coating composition (C) contains a hydroxyl group-containing acrylic resin (c1) and an allophanate group-containing polyisocyanate compound (c2).Type: GrantFiled: April 25, 2019Date of Patent: January 3, 2023Assignees: KANSAI PAINT CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuki Matsubara, Yoshinari Matsuura, Takayuki Ono, Hironori Tonomura, Masako Hase, Hiroshi Mitsuishi, Keiji Ambo
-
Publication number: 20220397238Abstract: A hydrogen supply system is configured to supply hydrogen to a fuel-cell vehicle by using a curdle for hydrogen transport, and includes: a filling unit provided at a hydrogen filling facility and configured to fill the curdle with hydrogen; a management unit configured to calculate a transport timing at which the hydrogen-filled curdle is transported to a business facility that operates the fuel-cell vehicle; a transport unit configured to transport the hydrogen-filled curdle to the business facility in accordance with the transport timing; and a disposition unit configured to dispose the hydrogen-filled curdle transported to the business facility at a place to which the fuel-cell vehicle is capable of accessing to have a refill of the hydrogen in the business facility.Type: ApplicationFiled: November 18, 2020Publication date: December 15, 2022Applicant: JFE STEEL CORPORATIONInventors: Hiroshi OKANO, Shusaku TAKAGI, Nobuyuki ISHIKAWA, Akihide NAGAO, Kazuki MATSUBARA, Toshio TAKANO, Kotaro KADOTA, Norikazu YAMAGUCHI, Takuya HASEGAWA, Hiroki KUNO
-
Patent number: 11414767Abstract: The present invention provides a chlorine dioxide manufacturing device that can accurately control the amount of chlorine dioxide produced. The present invention provides a chlorine dioxide gas manufacturing device comprising an electrolysis chamber, a liquid surface level measuring chamber, and a bubbling gas feeding device. The electrolysis chamber and the liquid surface level measuring chamber each comprises an electrolytic solution and a gas, wherein the electrolytic solution comprises an aqueous chlorite solution, and the electrolysis chamber and the liquid surface level measuring chamber are joined to each other above each liquid surface via a gas piping and joined to each other below each liquid surface via an electrolytic solution piping so that the height of the electrolytic solutions contained in each chamber are substantially equal.Type: GrantFiled: July 16, 2020Date of Patent: August 16, 2022Assignee: Taiko Pharmaceutical Co., Ltd.Inventors: Kazuki Matsubara, Yasuhiro Takigawa, Kazuhiko Taguchi, Shigeo Asada, Kouichi Taura, Koichi Nakahara, Daisuke Kato
-
Information processing apparatus, information processing method, and non-transitory recording medium
Patent number: 11310390Abstract: An information processing apparatus includes circuitry to, store, in a memory, received fax data as a stored document in a distribution destination folder corresponding to the fax data, in response to detection of a delete operation performed on the stored document, determine a state of the stored document to generate a first determination result, when the first determination result indicates that the stored document is in a read state, determine whether a period from a time at which the stored document was read to a time at which the delete operation was performed is within a preset period to generate a second determination result, and when the first determination result indicates that the stored document is in an unread state, or when the second determination result indicates that the period is within the preset period, copy the stored document to a specific folder and delete the stored document.Type: GrantFiled: August 5, 2021Date of Patent: April 19, 2022Assignee: RICOH COMPANY, LTD.Inventor: Kazuki Matsubara -
INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND NON-TRANSITORY RECORDING MEDIUM
Publication number: 20220060600Abstract: An information processing apparatus includes circuitry to, store, in a memory, received fax data as a stored document in a distribution destination folder corresponding to the fax data, in response to detection of a delete operation performed on the stored document, determine a state of the stored document to generate a first determination result, when the first determination result indicates that the stored document is in a read state, determine whether a period from a time at which the stored document was read to a time at which the delete operation was performed is within a preset period to generate a second determination result, and when the first determination result indicates that the stored document is in an unread state, or when the second determination result indicates that the period is within the preset period, copy the stored document to a specific folder and delete the stored document.Type: ApplicationFiled: August 5, 2021Publication date: February 24, 2022Inventor: Kazuki MATSUBARA -
Publication number: 20210396354Abstract: A high-pressure hydrogen tank includes a metal circular cylinder configured to store high-pressure hydrogen therein, a cap part configured to cover each of opposite end portions of the metal circular cylinder, an outer cylinder surrounding an outer periphery of a circular-cylindrical portion of the metal circular cylinder, and a fastening part configured to fix the cap part to the outer cylinder.Type: ApplicationFiled: November 11, 2019Publication date: December 23, 2021Applicant: JFE STEEL CORPORATIONInventors: Toshio TAKANO, Hiroshi OKANO, Akihide NAGAO, Nobuyuki ISHIKAWA, Kazuki MATSUBARA
-
Publication number: 20210270421Abstract: A method of manufacturing a pressure accumulator, using an AE signal for the pressure accumulator, includes: a first estimation step of estimating with an AE sensor provided at the pressure accumulator, a range of stress levels at each of which a damage AE signal that is generated from the pressure accumulator because of damage of material of the pressure accumulator is in a predetermined state; and a first design step of designing the pressure accumulator such that a minimum thickness of the pressure accumulator is determined based on the stress level range estimated in the first estimation step.Type: ApplicationFiled: June 21, 2019Publication date: September 2, 2021Inventors: Hiroshi Okano, Akihide Nagao, Nobuyuki Ishikawa, Kazuki Matsubara, Toshio Takano
-
Publication number: 20210270779Abstract: A life estimation apparatus for a pressure accumulator estimates the life of the pressure accumulator based on an AE signal for the pressure accumulator. The life estimation apparatus includes: an AE sensor that is provided at the pressure accumulator and detects the AE signal; and an estimation unit that sets a point of time at which the AE sensor detects a damage AE signal that is generated from the pressure accumulator because of damage of a material during use of the pressure accumulator, as a minimum initial flaw generation time point that is a point of time at which a minimum initial flaw of the pressure accumulator that is detected by a non-destructive inspection method is generated in shipping of the pressure accumulator.Type: ApplicationFiled: June 21, 2019Publication date: September 2, 2021Inventors: Hiroshi Okano, Akihide Nagao, Nobuyuki Ishikawa, Kazuki Matsubara, Toshio Takano
-
Publication number: 20200354841Abstract: The present invention provides a chlorine dioxide manufacturing device that can accurately control the amount of chlorine dioxide produced. The present invention provides a chlorine dioxide gas manufacturing device comprising an electrolysis chamber, a liquid surface level measuring chamber, and a bubbling gas feeding device. The electrolysis chamber and the liquid surface level measuring chamber each comprises an electrolytic solution and a gas, wherein the electrolytic solution comprises an aqueous chlorite solution, and the electrolysis chamber and the liquid surface level measuring chamber are joined to each other above each liquid surface via a gas piping and joined to each other below each liquid surface via an electrolytic solution piping so that the height of the electrolytic solutions contained in each chamber are substantially equal.Type: ApplicationFiled: July 16, 2020Publication date: November 12, 2020Applicant: Taiko Pharmaceutical Co., Ltd.Inventors: Kazuki Matsubara, Yasuhiro Takigawa, Kazuhiko Taguchi, Shigeo Asada, Kouichi Taura, Koichi Nakahara, Daisuke Kato
-
Patent number: 10753004Abstract: The present invention provides a chlorine dioxide manufacturing device that can accurately control the amount of chlorine dioxide produced. The present invention provides a chlorine dioxide gas manufacturing device comprising an electrolysis chamber, a liquid surface level measuring chamber, and a bubbling gas feeding device. The electrolysis chamber and the liquid surface level measuring chamber each comprises an electrolytic solution and a gas and the electrolysis chamber and the liquid surface level measuring chamber are joined to each other above each liquid surface via a gas piping and joined to each other below each liquid surface via an electrolytic solution piping so that the height of the electrolytic solutions contained in each chamber are substantially equal.Type: GrantFiled: August 31, 2015Date of Patent: August 25, 2020Assignee: Taiko Pharmaceuticals Co., Ltd.Inventors: Kazuki Matsubara, Yasuhiro Takigawa, Kazuhiko Taguchi, Shigeo Asada, Kouichi Taura, Koichi Nakahara, Daisuke Kato
-
Patent number: 10717895Abstract: A method for forming a multilayer coated film on an electrodeposition-coated alloyed hot-dip galvanized steel plate include step (1) of applying an aqueous intermediate coating composition (X), step (2) of applying an aqueous base coating composition (Y), step (3) of applying a clear coating composition (Z) containing an epoxide, and step (4) of heat-curing each coated film. The coating composition (X) contains a hydroxyl group-containing acrylic resin (A), a polyurethane resin (B), a hydroxyl group-containing polyester resin (C), a melamine resin (D), and an active methylene-blocked polyisocyanate compound (E). The ratio of (A) to (B) is controlled to a specific range, and an elongation at break, Young's modulus and Tukon hardness of the coated film of the coating composition (X) are controlled to specific ranges.Type: GrantFiled: February 13, 2018Date of Patent: July 21, 2020Assignees: KANSAI PAINT CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masako Hase, Keiji Ambo, Yoshinori Narita, Hiroshi Nishinaka, Yukihiro Ikeura, Kazuki Matsubara
-
Publication number: 20190344310Abstract: A method for forming a multilayer coated film includes step (1) of applying an aqueous intermediate coating composition (A), step (2) of applying an aqueous base coating composition (B), step (3) of applying a clear coating composition (C), and step (4) of heat-curing the coated films. The coating composition (A) contains a specific hydroxyl group-containing acrylic resin (a1), a specific polyurethane resin (a2), a specific hydroxyl group-containing polyester resin (a3), a melamine resin (a4), and an active methylene-blocked polyisocyanate compound (a5). A ratio of the resin (a1) to the resin (a2) falls within a specific range. The heat-cured coated film of the coating composition (A) has a specific elongation at break, Young's modulus and Tukon hardness. The coating composition (C) contains a hydroxyl group-containing acrylic resin (c1) and an allophanate group-containing polyisocyanate compound (c2).Type: ApplicationFiled: April 25, 2019Publication date: November 14, 2019Applicants: KANSAI PAINT CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuki MATSUBARA, Yoshinari Matsuura, Takayuki Ono, Hironori Tonomura, Masako Hase, Hiroshi Mitsuishi, Keiji Ambo
-
Patent number: 10239032Abstract: The present invention provides a chlorine dioxide generation unit that can release practically sufficient amount of chlorine dioxide for an extended period of time while being compact. The present invention provides a chlorine dioxide generation unit, characterized in that said unit comprises an agent storage space portion and at least two light source portions, said light source portion is for generating light consisting of wavelengths substantially in the visible region, said agent storage space portion stores an agent comprising solid chlorite, and said agent storage space portion comprises one or more openings so that air could move in and out of said agent storage space portion, wherein chlorine dioxide gas is generated by irradiating said light generated from said light source portion onto said agent present inside said agent storage space portion.Type: GrantFiled: December 19, 2014Date of Patent: March 26, 2019Assignee: Taiko Pharmaceutical Co., Ltd.Inventors: Yasuhiro Takigawa, Koichi Nakahara, Daisuke Kato, Kazuhiko Taguchi, Kazuki Matsubara, Koshiro Sogawa, Kouichi Taura, Miyusse Sakasegawa