Patents by Inventor Fuminori Watanabe
Fuminori Watanabe 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: 20240120664Abstract: An antenna device includes an array antenna configured to radiate a radio wave. The array antenna includes at least four radiating elements arranged substantially parallel to a beam scanning plane of the radio wave. The at least four radiating elements are arranged substantially parallel to a first principal surface of window glass for a building, with the antenna device arranged such that the array antenna is arranged at the first principal surface of the window glass in a non-contact manner and such that the radio wave is radiated toward a second principal surface of the window glass opposite from the first principal surface.Type: ApplicationFiled: December 13, 2023Publication date: April 11, 2024Applicant: AGC Inc.Inventors: Yasuo MORIMOTO, Fuminori WATANABE, Shimpei NAGAE, Ryuta SONODA, Tetsuya HIRAMATSU
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Patent number: 11817621Abstract: A vehicle antenna includes a conductor plate, a radiator plate facing the conductor plate, a feeding portion located on a same side as the conductor plate with respect to the radiator plate, a connection conductor connecting the feeding portion and the radiator plate, and a first element and a second element arranged away from each other on both sides in a vehicle-width direction of a vehicle with respect to the radiator plate, wherein the radiator plate is arranged at an inclination of equal to or less than ±15 degrees with respect to a vertical plane perpendicular to a horizontal plane.Type: GrantFiled: October 15, 2021Date of Patent: November 14, 2023Assignee: AGC INC.Inventors: Kenichiro Kodama, Koki Mikamo, Fuminori Watanabe, Shoichi Takeuchi
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Publication number: 20220037772Abstract: A vehicle antenna includes a conductor plate, a radiator plate facing the conductor plate, a feeding portion located on a same side as the conductor plate with respect to the radiator plate, a connection conductor connecting the feeding portion and the radiator plate, and a first element and a second element arranged away from each other on both sides in a vehicle-width direction of a vehicle with respect to the radiator plate, wherein the radiator plate is arranged at an inclination of equal to or less than ±15 degrees with respect to a vertical plane perpendicular to a horizontal plane.Type: ApplicationFiled: October 15, 2021Publication date: February 3, 2022Applicant: AGC Inc.Inventors: Kenichiro KODAMA, Koki MIKAMO, Fuminori WATANABE, Shoichi TAKEUCHI
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Patent number: 11183750Abstract: A vehicle antenna includes a conductor plate, a radiator plate facing the conductor plate, a feeding portion located on a same side as the conductor plate with respect to the radiator plate, a connection conductor connecting the feeding portion and the radiator plate, and a first element and a second element arranged away from each other on both sides in a vehicle-width direction of a vehicle with respect to the radiator plate, wherein the radiator plate is arranged at an inclination of equal to or less than ±15 degrees with respect to a vertical plane perpendicular to a horizontal plane.Type: GrantFiled: October 19, 2020Date of Patent: November 23, 2021Assignee: AGC INC.Inventors: Kenichiro Kodama, Koki Mikamo, Fuminori Watanabe, Shoichi Takeuchi
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Patent number: 11027361Abstract: By obtaining a spot-welded joint being a spot-welded joint formed by overlapping a plurality of pieces of steel plates (1A, 1B) and performing spot welding on the steel plates, including a high-strength steel plate whose tensile strength is 750 (MPa) to 2500 (MPa), being at least one piece of steel plate out of the plurality of pieces of steel plates, in which a carbon equivalent Ceq of the high-strength steel plate is 0.20 mass % to 0.55 mass %, and ten or more of iron-based carbides in each of which a length of a longest portion is 0.1 (?m) or more exist in a square region 103 within a heat-affected zone 4 of a cross section that passes through a center of a welding mark, and is cut along a plate thickness direction of the steel plates (1A, 1B), a cross tensile strength of the spot-welded joint to be formed is improved.Type: GrantFiled: September 28, 2018Date of Patent: June 8, 2021Assignee: NIPPON STEEL CORPORATIONInventors: Chisato Wakabayashi, Fuminori Watanabe, Seiji Furusako, Yasunobu Miyazaki, Hiroyuki Kawata, Tohru Okada, Hideki Hamatani
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Patent number: 10994364Abstract: A spot welded joint in which a high CTS is obtained even if including one or more high strength steel sheets and a method of welding of the same, that is, a spot welded joint 1 including a plurality of steel sheets, wherein one or more steel sheets is a tensile strength 750 to 2500 MPa high strength steel sheet and, at a cross-section in the sheet thickness direction of the steel sheets, when defining superposed surfaces of a high strength steel sheet S1 arranged at an outermost side and another steel sheet 1B as the “plane A” and defining a plane passing through a point of one-half of a distance between a nugget end position E of a high strength steel sheet S1 side on the line L1 in the sheet thickness direction and a crossing point O of the plane A and the line L1 and parallel to the plane A as the “plane B”, at a square area SA of sides of 30 ?m centered about a crossing point X of a line L2, which is separated by 250 ?m to the heat affected zone side from a tangent at any position on a nugget end line NELType: GrantFiled: October 16, 2015Date of Patent: May 4, 2021Assignee: NIPPON STEEL CORPORATIONInventors: Chisato Yoshinaga, Seiji Furusako, Fuminori Watanabe, Yasunobu Miyazaki, Tohru Okada
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Publication number: 20210036412Abstract: A vehicle antenna includes a conductor plate, a radiator plate facing the conductor plate, a feeding portion located on a same side as the conductor plate with respect to the radiator plate, a connection conductor connecting the feeding portion and the radiator plate, and a first element and a second element arranged away from each other on both sides in a vehicle-width direction of a vehicle with respect to the radiator plate, wherein the radiator plate is arranged at an inclination of equal to or less than ±15 degrees with respect to a vertical plane perpendicular to a horizontal plane.Type: ApplicationFiled: October 19, 2020Publication date: February 4, 2021Applicant: AGC Inc.Inventors: Kenichiro KODAMA, Koki MIKAMO, Fuminori WATANABE, Shoichi TAKEUCHI
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Publication number: 20200391318Abstract: What is provided is an electric resistance welded steel pipe manufacturing device that is configured to perform welding while forming a strip-shaped steel sheet in a tubular shape and supplying a plasma flow to a pair of abutment end surfaces to perform shielding. The electric resistance welded steel pipe manufacturing device includes a mandrel; and a plasma flow feeder that is provided in the mandrel to supply the plasma flow.Type: ApplicationFiled: January 22, 2018Publication date: December 17, 2020Applicant: NIPPON STEEL CORPORATIONInventors: Kotaro WATANABE, Hideki HAMATANI, Fuminori WATANABE, Kimiharu TANAKA, Yusuke TAKEDA, Yuya TOMONAGA, Yoshihiro HASHIMOTO, Masahide HAYASHI
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Patent number: 10722935Abstract: Provided is a mechanical joining apparatus enabling stable riveting when joining metal sheets even when the sheets are large in deformation resistance, the apparatus comprising a punch and die, blank holder and power device, wherein the punch and die are arranged facing each other, the holder is configured by an electrode material able to push against and electrically heat the sheets by one end of the holder, the punch is comprised of a material able to drive in a rivet, the die is comprised of an electrode material able to support and electrically heat the sheets, and the power device is configured to start supply of current through the holder and die so as to raise the temperature of the sheets at the same time as the start of driving in of the rivet and to continue to supply current until the end of driving in of the rivet.Type: GrantFiled: July 1, 2016Date of Patent: July 28, 2020Assignee: NIPPON STEEL CORPORATIONInventors: Seiji Furusako, Tohru Okada, Yasunobu Miyazaki, Fuminori Watanabe, Yoshiaki Nakazawa
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Patent number: 10668557Abstract: A spot welding electrode of a donut-shaped electrode wherein even when a welded member of a steel sheet is slanted with respect a plane perpendicular to an axis of the spot welding electrode, a cross tensile strength (CTS) of the spot welded joint can be improved. The donut shape spot welding electrode according to the present invention has an electrode tip and an electrode support. The electrode tip contacts the electrode support to be able to move. Due to this, it is possible to strikingly raise the ability of the donut-shaped electrode to track a steel sheet and make the entire surface of the donut shape contact-and-conduction part contact the steel sheet, so it is possible to secure a high CTS value even if the steel sheet is slanted.Type: GrantFiled: December 5, 2014Date of Patent: June 2, 2020Assignee: NIPPON STEEL CORPORATIONInventors: Fuminori Watanabe, Tohru Okada, Seiji Furusako
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Patent number: 10646949Abstract: The present invention has as its object to provide a spot welded joint and spot welding method which raise the fracture toughness of spot welded metal to raise the strength of the spot welded joint. In the present invention, there is provided a spot welding method comprising a melt zone forming step forming a melt zone by conduction and, after the melt zone forming step, a solidification step of running a current lower than the current run in the melt zone forming step so as to cause the melt zone to solidify, wherein, in the solidification step, electromagnetic vibration is applied to the melt zone, and a frequency fV of the electromagnetic vibration, a solidification speed ?S when the melt zone solidifies, and an arm interval of dendrites ?D when the melt zone solidifies satisfy 0.2??S/(?D·fV)?4.0.Type: GrantFiled: January 30, 2015Date of Patent: May 12, 2020Assignee: NIPPON STEEL CORPORATIONInventors: Fuminori Watanabe, Yasunobu Miyazaki
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Patent number: 10603713Abstract: Provided is a mechanical joining apparatus enabling reduction of breakage of the area around a rivet of a joint obtained by riveting, the apparatus comprising a punch and die, blank holder, first power device, second power device and cooling device, wherein the first power device is configured to start supply of current through the holder and die so as to raise the temperature of the sheets before the punch drives in the rivet, the second power device is configured to start supply of current through the punch and die so as to supply current through and heat treat the rivet after the punch drives in the rivet, and the cooling device is connected to the punch and is configured to cool the rivet after the rivet is heat treated.Type: GrantFiled: July 1, 2016Date of Patent: March 31, 2020Assignee: NIPPON STEEL CORPORATIONInventors: Seiji Furusako, Tohru Okada, Yasunobu Miyazaki, Fuminori Watanabe, Yoshiaki Nakazawa
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Patent number: 10603743Abstract: There is provided a power supply device that supplies an output current to an electric processing device which performs electric processing on workpieces. The device includes: a first power supply; a magnetic energy recovery switch that receives a current supplied from the first power supply, and converts the received current into the output current; and a control unit that controls the magnetic energy recovery switch such that an electric current frequency of the output current includes a first electric current frequency and a second electric current frequency which are different from each other within a one-time electric processing time using the electric processing device.Type: GrantFiled: December 11, 2015Date of Patent: March 31, 2020Assignee: NIPPON STEEL CORPORATIONInventors: Fuminori Watanabe, Kazuhiko Fukutani, Seiji Furusako, Chisato Yoshinaga, Tohru Okada
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Patent number: 10350701Abstract: A spot welding method able to simply prevent liquid metal embrittlement cracks in spot welding of plated steel sheets, comprising, before spot welding, removing the plating at least in a zone including the inside of a circle centered at a scheduled location where the center of the nugget is formed and having an outer circumference of the inside of the outer edge of a weld affected zone or a zone at the mated surfaces of the steel sheets to be welded at the inside of a circle sharing a center of a scheduled location becoming the center of the nugget formed at the mated surfaces of the steel sheets and having an outer circumference of the inside of the outer edge of a weld affected zone.Type: GrantFiled: March 30, 2016Date of Patent: July 16, 2019Assignee: NIPPON STEEL CORPORATIONInventors: Yasunobu Miyazaki, Fuminori Watanabe, Chisato Wakabayashi, Kunio Hayashi, Hiroyuki Kawata, Seiji Furusako, Sho Matsui
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Publication number: 20190030637Abstract: By obtaining a spot-welded joint being a spot-welded joint formed by overlapping a plurality of pieces of steel plates (1A, 1B) and performing spot welding on the steel plates, including a high-strength steel plate whose tensile strength is 750 (MPa) to 2500 (MPa), being at least one piece of steel plate out of the plurality of pieces of steel plates, in which a carbon equivalent Ceq of the high-strength steel plate is 0.20 mass % to 0.55 mass %, and ten or more of iron-based carbides in each of which a length of a longest portion is 0.1 (?m) or more exist in a square region 103 within a heat-affected zone 4 of a cross section that passes through a center of a welding mark, and is cut along a plate thickness direction of the steel plates (1A, 1B), a cross tensile strength of the spot-welded joint to be formed is improved.Type: ApplicationFiled: September 28, 2018Publication date: January 31, 2019Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Chisato WAKABAYASHI, Fuminori WATANABE, Seiji FURUSAKO, Yasunobu MIYAZAKI, Hiroyuki KAWATA, Tohru OKADA, Hideki HAMATANI
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Publication number: 20180304396Abstract: A spot welded joint in which a high CTS is obtained even if including one or more high strength steel sheets and a method of welding of the same, that is, a spot welded joint 1 including a plurality of steel sheets, wherein one or more steel sheets is a tensile strength 750 to 2500 MPa high strength steel sheet and, at a cross-section in the sheet thickness direction of the steel sheets, when defining superposed surfaces of a high strength steel sheet S1 arranged at an outermost side and another steel sheet 1B as the “plane A” and defining a plane passing through a point of one-half of a distance between a nugget end position E of a high strength steel sheet S1 side on the line L1 in the sheet thickness direction and a crossing point O of the plane A and the line L1 and parallel to the plane A as the “plane B”, at a square area SA of sides of 30 ?m centered about a crossing point X of a line L2, which is separated by 250 ?m to the heat affected zone side from a tangent at any position on a nugget end line NELType: ApplicationFiled: October 16, 2015Publication date: October 25, 2018Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Chisato YOSHINAGA, Seiji FURUSAKO, Fuminori WATANABE, Yasunobu MIYAZAKI, Tohru OKADA
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Patent number: 10099311Abstract: A spot welding method is a method of performing spot welding to obtain a spot welded joint, the method including a spot welding with two-stage welding, setting a ratio (I2/I1) of a current I2 of a second welding process to a current I1 of a first welding process to from 0.5 to 0.8, setting a time tc of a cooling process within a range of from 0.8×tmin to 2.5×tmin wherein tmin is calculated using the equation (0.2×H2) according to a sheet thickness H of the steel sheets, setting an welding time t2 of a second welding process within a range of from 0.7×tmin to 2.5×tmin, and setting a pressure from the cooling process onward to greater than a pressure until the first welding process.Type: GrantFiled: April 16, 2014Date of Patent: October 16, 2018Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Seiji Furusako, Fuminori Watanabe, Yasunobu Miyazaki, Tohru Okada, Tasuku Zeniya, Koichi Sato
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Patent number: 10081073Abstract: In a spot welded joint according to an aspect of the present invention, with respect to a rectangular planar region of 100 ?m×100 ?m which is perpendicular to a sheet surface of the plurality of the steel sheets and which centers around an inner point spaced away by 100 ?m in a direction parallel with the sheet surface from an edge of a nugget, in a case of measuring a P concentration at a pitch of 1 ?m to obtain measured values of the P concentration at 100×100 of measurement points, and in a case of repetitively calculating an average value of the measured values of the P concentration at 20 of the measurement points which are adjacent to each other and which are arranged in a row in the direction parallel with the sheet surface among the 100×100 of the measurement points while shifting each one point to obtain 81×100 of the average values, the number of the average values which are more than two times an average P concentration is 0 to 100.Type: GrantFiled: April 25, 2013Date of Patent: September 25, 2018Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Fuminori Watanabe, Tomohito Tanaka, Seiji Furusako, Yasunobu Miyazaki, Hideki Hamatani, Hatsuhiko Oikawa
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Publication number: 20180185903Abstract: Provided is a mechanical joining apparatus enabling reduction of breakage of the area around a rivet of a joint obtained by riveting, the apparatus comprising a punch and die, blank holder, first power device, second power device and cooling device, wherein the first power device is configured to start supply of current through the holder and die so as to raise the temperature of the sheets before the punch drives in the rivet, the second power device is configured to start supply of current through the punch and die so as to supply current through and heat treat the rivet after the punch drives in the rivet, and the cooling device is connected to the punch and is configured to cool the rivet after the rivet is heat treated.Type: ApplicationFiled: July 1, 2016Publication date: July 5, 2018Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Seiji FURUSAKO, Tohru OKADA, Yasunobu MIYAZAKI, Fuminori WATANABE, Yoshiaki NAKAZAWA
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Publication number: 20180185902Abstract: Provided is a mechanical joining apparatus enabling stable riveting when joining metal sheets even when the sheets are large in deformation resistance, the apparatus comprising a punch and die, blank holder and power device, wherein the punch and die are arranged facing each other, the holder is configured by an electrode material able to push against and electrically heat the sheets by one end of the holder, the punch is comprised of a material able to drive in a rivet, the die is comprised of an electrode material able to support and electrically heat the sheets, and the power device is configured to start supply of current through the holder and die so as to raise the temperature of the sheets at the same time as the start of driving in of the rivet and to continue to supply current until the end of driving in of the rivet.Type: ApplicationFiled: July 1, 2016Publication date: July 5, 2018Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Seiji FURUSAKO, Tohru OKADA, Yasunobu MIYAZAKI, Fuminori WATANABE, Yoshiaki NAKAZAWA