Patents by Inventor Takayuki Fukunaga
Takayuki Fukunaga 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: 20240123542Abstract: A laser cutting method for a steel strip, includes cutting a vicinity of a joint obtained by joining a rear end of a preceding steel strip and a front end of a following steel strip by using a pulse-type laser beam, wherein output of the pulse-type laser beam is set to 0.5 kw or more per 1 ms, a processing point diameter of the pulse-type laser beam is set to 0.1 mm or more and less than 0.6 mm, and a ratio between a pulse period time and a down-time is set to 0.3 or more and less than 0.8.Type: ApplicationFiled: October 26, 2021Publication date: April 18, 2024Applicant: JFE Steel CorporationInventors: Noriki Fujita, Yukihiro Matsubara, Takayuki Fukunaga
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Publication number: 20240108607Abstract: A compound represented by Formula [3] or a salt thereof and a method of making the in the formula, L3 represents a group represented by Formula [2c] wherein R3c, R4c, R5c and R6c are the same as or different from each other and represent a hydrogen atom or a C1-6 alkyl group; p3 represents an integer of 1 to 3; q3 represents an integer of 0 to 3; and r3 represents an integer of 1 to 6; A1 represents any one of the groups represented by Formulae [4] to [9], wherein * represents a binding position; and R7 represents a carboxyl-protecting group; and m represents an integer of 1 to 3.Type: ApplicationFiled: February 21, 2023Publication date: April 4, 2024Applicant: FUJIFILM CorporationInventors: Hirofumi FUKUNAGA, Sachiko SHINJO, Daisuke NAKAGAWA, Shinichiro SEKINE, Takayuki YAMAKAWA
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Patent number: 11673430Abstract: Provided is a tire including: a decorative portion that is formed on an outer surface of the tire and has a base surface; and a pattern region that is provided at the decorative portion and includes plural projections projecting from the base surface and formed at an interval of from more than 0.1 mm to 1.0 mm, the plural projections having a height of from 0.1 mm to 1.0 mm, in which at least in the pattern region, the plurality of projections is inclined in one direction with respect to a normal line perpendicular to the base surface.Type: GrantFiled: December 5, 2018Date of Patent: June 13, 2023Assignee: BRIDGESTONE CORPORATIONInventors: Sotaro Iwabuchi, Takayuki Fukunaga
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Patent number: 11148476Abstract: A tire includes a pattern portion that is formed on a tire surface and in which ridges are arranged in a nest shape having a center point, the ridges including ridgelines CL having a curved portion in plan view, in which a height of each of the ridges is from 0.2 mm to 0.5 mm, and adjacent ridges are arranged at a constant pitch of from 0.15 mm to 0.35 mm.Type: GrantFiled: January 24, 2017Date of Patent: October 19, 2021Assignee: BRIDGESTONE CORPORATIONInventors: Sotaro Iwabuchi, Takayuki Fukunaga
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Publication number: 20210188018Abstract: Provided is a tire including: a decorative portion that is formed on an outer surface of the tire and that has a base surface; and a pattern region that is provided at the decorative portion and that formed with plural projections projecting at a height of from 0.1 mm to 1.0 mm from the base surface and formed at an interval of from more than 0.1 mm to 1.0 mm, in which the pattern region is provided with a gradual decrease region in which a height of the plural projections disposed adjacent to each other gradually decreases.Type: ApplicationFiled: December 5, 2018Publication date: June 24, 2021Inventors: Sotaro IWABUCHI, Takayuki FUKUNAGA
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Publication number: 20200369094Abstract: Provided is a tire including: a decorative portion that is formed on an outer surface of the tire and has a base surface; and a pattern region that is provided at the decorative portion and includes plural projections projecting from the base surface and formed at an interval of from more than 0.1 mm to 1.0 mm, the plural projections having a height of from 0.1 mm to 1.0 mm, in which at least in the pattern region, the plurality of projections is inclined in one direction with respect to a normal line perpendicular to the base surface.Type: ApplicationFiled: December 5, 2018Publication date: November 26, 2020Applicant: BRIDGESTONE CORPORATIONInventors: Sotaro IWABUCHI, Takayuki FUKUNAGA
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Patent number: 10337082Abstract: Provided is a hearth roll for supporting and conveying a steel sheet in a continuous annealing furnace, wherein all of a shaft portion and a roil main body are made from one or more ceramic materials, preferably constituted with concentric ceramic layers of different ceramic materials centering on the rotation shaft of the roll. The hearth roll has not only an excellent pickup resistance but also a long roll life free from maintenance for long periods. Also provided is a continuous annealing facility using the hearth roll in at least one of a heating zone, a soaking zone and a cooling zone.Type: GrantFiled: September 29, 2015Date of Patent: July 2, 2019Assignee: JFE STEEL CORPORATIONInventor: Takayuki Fukunaga
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Publication number: 20190118583Abstract: A pneumatic tire (10) according to the present invention includes blocks (100) arranged adjacent to each other in a tread surface view, each of the blocks (100) having a wheel tread contacted with a road surface. A circumferential edge (100f) of the block (100) is defined against an adjacent block (100B) adjacent to the block (100A) by a sipe (200). An inner side groove (400) is formed at an inner side in a tire radial direction of the sipe (200). At least a part of the inner side groove (400) is communicated with the sipe (200). The circumferential edge (100f) of the block (100A) is defined against the adjacent block (100B) by the inner side groove (400).Type: ApplicationFiled: April 14, 2017Publication date: April 25, 2019Applicant: BRIDGESTONE CORPORATIONInventors: Takamitsu NAKAMURA, Takayuki FUKUNAGA
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Publication number: 20190023081Abstract: A tire includes a pattern portion that is formed on a tire surface and in which ridges are arranged in a nest shape having a center point, the ridges including ridgelines CL having a curved portion in plan view, in which a height of each of the ridges is from 0.2 mm to 0.5 mm, and adjacent ridges are arranged at a constant pitch of from 0.15 mm to 0.35 mm.Type: ApplicationFiled: January 24, 2017Publication date: January 24, 2019Applicant: BRIDGESTONE CORPORATIONInventors: Sotaro IWABUCHI, Takayuki FUKUNAGA
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Patent number: 10134514Abstract: In a method for producing a grain-oriented electrical steel sheet by hot rolling a raw steel material containing C: 0.002˜0.10 mass %, Si: 2.0˜8.0 mass % and Mn: 0.005˜1.0 mass % to obtain a hot rolled sheet, subjecting the hot rolled sheet to a hot band annealing as required and further to one cold rolling or two or more cold rollings including an intermediate annealing therebetween to obtain a cold rolled sheet having a final sheet thickness, subjecting the cold rolled sheet to a primary recrystallization annealing combined with decarburization annealing, applying an annealing separator to the steel sheet surface and then subjecting to a final annealing, when rapid heating is performed at a rate of not less than 50° C./s in a range of 100˜700° C. in the heating process of the primary recrystallization annealing, the steel sheet is subjected to a holding treatment at any temperature of 250˜600° C. for 0.Type: GrantFiled: February 24, 2014Date of Patent: November 20, 2018Assignee: JFE Steel CorporationInventors: Masanori Uesaka, Takeshi Imamura, Ryuichi Suehiro, Takayuki Fukunaga, Toshito Takamiya
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Patent number: 10072318Abstract: In a continuous annealing line for steel sheets comprising a heating zone, a soaking zone and a cooling zone, two or more induction heating devices are arranged in series in a front half part of the heating zone, and a heating stop region of 1˜30 m in length or a slow heating region having a heating rate of more than 0° C./s but not more than 10° C./s is provided in a temperature zone that the temperature of the steel sheet between two or more induction heating devices is 250° C. to 600° C. Even if the steel sheet is rapidly heated at a heating rate of not less than 50° C./s with such a rapid heating apparatus of the heating zone, the temperature distribution in the steel sheet is uniformized to realize the quality improvement of steel sheet shape or magnetic properties and so on.Type: GrantFiled: September 2, 2013Date of Patent: September 11, 2018Assignee: JFE STEEL CORPORATIONInventors: Takayuki Fukunaga, Isao Akagi
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Publication number: 20170275731Abstract: Provided is a hearth roll for supporting and conveying a steel sheet in a continuous annealing furnace, wherein all of a shaft portion and a roil main body are made from one or more ceramic materials, preferably constituted with concentric ceramic layers of different ceramic materials centering on the rotation shaft of the roll. The hearth roll has not only an excellent pickup resistance but also a long roll life free from maintenance for long periods. Also provided is a continuous annealing facility using the hearth roll in at least one of a heating zone, a soaking zone and a cooling zone.Type: ApplicationFiled: September 29, 2015Publication date: September 28, 2017Applicant: JFE STEEL CORPORATIONInventor: Takayuki FUKUNAGA
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Publication number: 20160012949Abstract: In a method for producing a grain-oriented electrical steel sheet by hot rolling a raw steel material containing C: 0.002˜0.10 mass %, Si: 2.0˜8.0 mass % and Mn: 0.005˜1.0 mass % to obtain a hot rolled sheet, subjecting the hot rolled sheet to a hot band annealing as required and further to one cold rolling or two or more cold rollings including an intermediate annealing therebetween to obtain a cold rolled sheet having a final sheet thickness, subjecting the cold rolled sheet to a primary recrystallization annealing combined with decarburization annealing, applying an annealing separator to the steel sheet surface and then subjecting to a final annealing, when rapid heating is performed at a rate of not less than 50° C./s in a range of 100˜700° C. in the heating process of the primary recrystallization annealing, the steel sheet is subjected to a holding treatment at any temperature of 250˜600° C. for 0.Type: ApplicationFiled: February 24, 2014Publication date: January 14, 2016Applicant: JFE STEEL CORPORATIONInventors: Masanori Uesaka, Takeshi Imamura, Ryuichi Suehiro, Takayuki Fukunaga, Toshito Takamiya
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Publication number: 20150211089Abstract: In a continuous annealing line for steel sheets comprising a heating zone, a soaking zone and a cooling zone, two or more induction heating devices are arranged in series in a front half part of the heating zone, and a heating stop region of 1˜30 m in length or a slow heating region having a heating rate of more than 0° C./s but not more than 10° C./s is provided in a temperature zone that the temperature of the steel sheet between two or more induction heating devices is 250° C. to 600° C. Even if the steel sheet is rapidly heated at a heating rate of not less than 50° C./s with such a rapid heating apparatus of the heating zone, the temperature distribution in the steel sheet is uniformized to realize the quality improvement of steel sheet shape or magnetic properties and so on.Type: ApplicationFiled: September 2, 2013Publication date: July 30, 2015Applicant: JFE Steel CorporationInventors: Takayuki Fukunaga, Isao Akagi
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Publication number: 20110048601Abstract: The present invention provides a pneumatic tire which can obtain a high wet drainage performance, roadholding ability, and wear-resistant property without sacrificing other capabilities A directional pattern is formed by a circumferential wide major groove, a first narrow circumferential minor groove, a second narrow circumferential minor groove, a first transverse groove, a second transverse groove, and a third transverse groove. The circumferential wide major groove is provided in a center region in a tire width direction of a tread. The first narrow circumferential minor groove is arranged on the outside in a tire axis direction of the circumferential wide major groove. The second narrow circumferential minor groove is arranged on the outside in the tire axis direction of the first narrow circumferential minor groove. The first transverse groove is extended from a tread end and coupled to the circumferential wide major groove.Type: ApplicationFiled: November 8, 2010Publication date: March 3, 2011Applicant: BRIDGESTONE CORPORATIONInventor: Takayuki FUKUNAGA
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Patent number: 7849895Abstract: The present invention provides a pneumatic tire which can obtain a high wet drainage performance, roadholding ability, and wear-resistant property without sacrificing other capabilities A directional pattern is formed by a circumferential wide major groove, a first narrow circumferential minor groove, a second narrow circumferential minor groove, a first transverse groove, a second transverse groove, and a third transverse groove. The circumferential wide major groove is provided in a center region in a tire width direction of a tread. The first narrow circumferential minor groove is arranged on the outside in a tire axis direction of the circumferential wide major groove. The second narrow circumferential minor groove is arranged on the outside in the tire axis direction of the first narrow circumferential minor groove. The first transverse groove is extended from a tread end and coupled to the circumferential wide major groove.Type: GrantFiled: May 27, 2005Date of Patent: December 14, 2010Assignee: Bridgestone CorporationInventor: Takayuki Fukunaga
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Publication number: 20100043935Abstract: In the present invention, a vehicle inner side bead filler sheet 32IN is provided at a tire side portion which is positioned on the vehicle inner side when the tire is mounted on a vehicle, a vehicle outer side bead filler sheet 32OUT is provided at a tire side portion which is positioned on the vehicle outer side when the tire is mounted on a vehicle, the height H1 of the vehicle inner side bead filler sheet is set larger than the height H2 of the vehicle outer side bead filler sheet. As a result, the rigidity of the tire side portion on the vehicle inner side can be set relatively higher than the rigidity of the tire side portion on the vehicle outer side.Type: ApplicationFiled: March 12, 2008Publication date: February 25, 2010Inventors: Takayuki Fukunaga, Shu Nagai, Toshiharu Ito
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Patent number: 7527082Abstract: A pneumatic tire which has improved drainage property on a wet road surface and improved uneven wear resistance and steering stability on a dry road surface while enhancing drainage property on a wet road surface. The tire has at least a pair of circumferential grooves 2 disposed at a tread portion 1. An inner land portion 3 and an outer land portion 4 are defined by outermost circumferential grooves 2a. A plurality of transverse grooves 5 are disposed on at least the outer land portion 4 and the outer land portion 4 is divided and formed into a large number of blocks by these transverse grooves 5. The width w1 of the groove bottom 6 of the outermost circumferential groove 2a is narrower than the opening width w2. The groove bottom extends with inclination with respect to the tire circumferential direction so that it substantially continues to the transverse groove between the adjacent transverse grooves. The groove bottom forms the zigzag shape as a whole.Type: GrantFiled: May 26, 2004Date of Patent: May 5, 2009Assignee: Bridgestone CorporationInventor: Takayuki Fukunaga
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Patent number: D713330Type: GrantFiled: August 23, 2012Date of Patent: September 16, 2014Assignee: Bridgestone CorporationInventors: Tatsuya Tomida, Shungo Fujita, Jon Stuckey, Takayuki Fukunaga
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Patent number: D785548Type: GrantFiled: October 29, 2015Date of Patent: May 2, 2017Assignee: BRIDGESTONE CORPORATIONInventors: Takayuki Fukunaga, Akio Kusano