Patents by Inventor Kotaro KUMAGAI
Kotaro KUMAGAI 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: 20240137075Abstract: A reflect array that sets a reflection angle of a radio wave to an angle that is different from an angle of specular reflection. The reflect array includes a plurality of cells arranged in an array. Each of the plurality of cells includes at least two main resonant elements and a parasitic resonant element coupled to the at least two main resonant elements. The parasitic resonant element is configured to adjust a resonant frequency of the parasitic resonant element and adjust a reflection phase of a surface of the reflect array by adjusting a resonant frequency of the at least two main resonant elements each adjacent to the parasitic resonant element, to which the parasitic resonant element is coupled.Type: ApplicationFiled: January 2, 2024Publication date: April 25, 2024Applicant: AGC Inc.Inventors: Akira KUMAGAI, Kotaro ENOMOTO, Osamu KAGAYA, Yutaka UI
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Publication number: 20240119967Abstract: An example thin substrate built-in hard disk drive includes a magnetic disk in a disk shape having a through-hole at the center, a spindle motor inserted into the through-hole of the magnetic disk and co-rotatably supporting the magnetic disk, and a base plate made of an aluminum alloy and supporting the spindle motor. The base plate has a metallographic structure in which a perimeter of a second phase particle having a longest diameter of 10 ?m or more is 3 mm/mm2 or more, and the number of second phase particles having a longest diameter of 500 ?m or more is 0 particles/mm2.Type: ApplicationFiled: April 20, 2023Publication date: April 11, 2024Applicants: UACJ Corporation, Furukawa Electric Co., Ltd.Inventors: Kotaro KITAWAKI, Hideyuki HATAKEYAMA, Wataru KUMAGAI, Ryo SAKAMOTO
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Patent number: 10823364Abstract: A vehicular lamp includes: light sources; a first condensing optical system that condenses light beams from the light sources; and a second condensing optical system including an incident portion into which the condensed light beams by the first condensing optical system are incident, and an emission portion through which the incident light beams are outputted forward and which has a line-shaped emission surface. The incident portion has a refractive surface that refracts the light beams condensed by the first condensing optical system in a direction in which the light beams are condensed, and the refractive surface refracts the light beams so that condensing points of the light beams condensed by the first condensing optical system fall within a condensing range in which the light beams are outputted from the emission surface even when there is a positional deviation between the first and second condensing optical systems within a set tolerance.Type: GrantFiled: July 19, 2019Date of Patent: November 3, 2020Assignee: STANLEY ELECTRIC CO., LTD.Inventors: Kotaro Kumagai, Hidetaka Okada
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Publication number: 20200270425Abstract: [Problem ] The present invention addresses the problem of providing a novelnanocarbon composite which is used to achieve a stable and uniform mechanical strength improvement effect in a carbon fiber-reinforced plastic or carbon fiber-reinforced composite material impregnated with a nanocarbon-containing resin. [Solution] A novel nanocarbon composite containing nanocarbon and nano-cellulose modified with a functional group(s) or a novel nanocarbon composite containing nanocarbon, nano-cellulose modified with a functional group(s), and a affinitive binding agent is constituted by incorporating a resin serving as a matrix in a carbon fiber-reinforced plastic or carbon fiber-reinforced composite material.Type: ApplicationFiled: December 12, 2016Publication date: August 27, 2020Applicants: Nano Summit Co., Ltd., The University of TokyoInventors: Ichiro SAKATA, Bunshi FUGETSU, Kotaro KUMAGAI, Jun TOMITA, Shoichi MANABE
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Patent number: 10543765Abstract: The present invention realizes a vehicle seat that allows for smooth movements of the shoulders of a sitter while maintaining a good fit for the sitter. The vehicle seat comprises a back seat having a lower part that supports a lower back area of a sitter, a central part that supports a ribs area, and an upper part that supports a shoulder blades area. The central part has a front surface formed so as to be wider than the lower part and the upper part as viewed from the front side, the front surface being curved with right and left ends thereof being projected forward. The seat back has a notched shape extending from the central part to the upper part such that shoulders of the sitter are exposed as viewed from the rear side.Type: GrantFiled: September 6, 2016Date of Patent: January 28, 2020Assignee: Tachi-S Co., Ltd.Inventors: Hideo Tobata, Atsushi Koike, Shumpei Toyomi, Atsushi Ishii, Kotaro Kumagai
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Publication number: 20200025352Abstract: A vehicular lamp includes: light sources; a first condensing optical system that condenses light beams from the light sources; and a second condensing optical system including an incident portion into which the condensed light beams by the first condensing optical system are incident, and an emission portion through which the incident light beams are outputted forward and which has a line-shaped emission surface. The incident portion has a refractive surface that refracts the light beams condensed by the first condensing optical system in a direction in which the light beams are condensed, and the refractive surface refracts the light beams so that condensing points of the light beams condensed by the first condensing optical system fall within a condensing range in which the light beams are outputted from the emission surface even when there is a positional deviation between the first and second condensing optical systems within a set tolerance.Type: ApplicationFiled: July 19, 2019Publication date: January 23, 2020Inventors: Kotaro Kumagai, Hidetaka Okada
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Patent number: 10414306Abstract: A seat apparatus equipped with a seat cover that covers at least part of the seat apparatus surface and is formed by sewing a plurality of skin material pieces together, an operation unit for receiving an operation from an operator, and a covering material for covering the operation unit, wherein: the covering material is formed as part of the skin material pieces, or is formed by sewing a member that is separate from the skin material pieces to the skin material pieces; and a projection is formed that projects in the outward direction from the seat cover when the operation unit is covered.Type: GrantFiled: March 11, 2016Date of Patent: September 17, 2019Assignee: TACHI-S CO., LTD.Inventors: Kotaro Kumagai, Masayuki Taguchi
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Patent number: 10343569Abstract: Provided is a seat for vehicles that improves holding properties during seating without providing more support sections than necessary in a seat cushion, and enables a passenger to smoothly getting on and off the vehicle. The seat for vehicles has a seat cushion that forms the seating surface of the seat, a seat back that forms the backrest of the seat, and a headrest that protects the head and neck of a passenger, in which the seat cushion includes a pelvis holding section that holds the pelvis of the passenger on the rear side of the seat cushion, and thigh holding sections that hold the thighs of the passenger on the front surface side of the right and left side surfaces of the seat cushion, in which the height of the seating surface on the rear side of the seat cushion is lower than the height of the thigh holding sections, and is lower than the height of the pelvis holding section.Type: GrantFiled: March 23, 2015Date of Patent: July 9, 2019Assignee: TACHI-S CO., LTD.Inventors: Kotaro Kumagai, Atsushi Ishii, Atsushi Koike
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Patent number: 10336225Abstract: A vehicle seat includes a seat cushion and a seatback. The seat cushion includes a pad having a groove, a plurality of seat covers for covering the pad surface, and a suspending member for connecting two of the plurality of seat covers, and fixing the two seat covers to the pad inside the groove formed in the pad. A plurality of minute holes are formed in the suspending member between a part connected to one of the two seat covers and a part connected to the other seat cover for ventilation between an inside and an outside of the groove formed in the pad with respect to the suspending member. This secures ventilation performance of the seat cover surface even when the occupant is seated on the vehicle seat.Type: GrantFiled: February 15, 2016Date of Patent: July 2, 2019Assignee: TACHI-S CO., LTD.Inventors: Kotaro Kumagai, Masayuki Taguchi
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Patent number: 10166891Abstract: Provided is an inexpensive, easy-to-assemble vehicular seat having few components. The vehicular seat 1A has a surface skin 13 and a backboard 12 to which the surface skin 13 is attached, wherein the surface skin 13 has a first surface skin 13a and a second surface skin 13b connected to the first surface skin 13a, protruding members 16 and holes 17 are provided as a connecting structure for connecting the backboard 12 and the second surface skin 13b, and the second surface skin 13b is formed from a soft material such as an elastomer.Type: GrantFiled: March 26, 2015Date of Patent: January 1, 2019Assignee: TACHI-S CO., LTD.Inventors: Kotaro Kumagai, Atsushi Ishii, Atsushi Koike
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Publication number: 20180345832Abstract: A vehicle seat includes a seat cushion and a seatback. The seat cushion includes a pad having a groove, a plurality of seat covers for covering the pad surface, and a suspending member for connecting two of the plurality of seat covers, and fixing the two seat covers to the pad inside the groove formed in the pad. A plurality of minute holes are formed in the suspending member between a part connected to one of the two seat covers and a part connected to the other seat cover for ventilation between an inside and an outside of the groove formed in the pad with respect to the suspending member. This secures ventilation performance of the seat cover surface even when the occupant is seated on the vehicle seat.Type: ApplicationFiled: February 15, 2016Publication date: December 6, 2018Inventors: Kotaro KUMAGAI, Masayuki TAGUCHI
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Publication number: 20180304785Abstract: The present invention realizes a vehicle seat that allows for smooth movements of the shoulders of a sitter while maintaining a good fit for the sitter. The vehicle seat comprises a back seat having a lower part that supports a lower back area of a sitter, a central part that supports a ribs area, and an upper part that supports a shoulder blades area. The central part has a front surface formed so as to be wider than the lower part and the upper part as viewed from the front side, the front surface being curved with right and left ends thereof being projected forward. The seat back has a notched shape extending from the central part to the upper part such that shoulders of the sitter are exposed as viewed from the rear side.Type: ApplicationFiled: September 6, 2016Publication date: October 25, 2018Applicant: TACHI-S CO., LTD.Inventors: Hideo Tobata, Atsushi Koike, Shumpei Toyomi, Atsushi Ishii, Kotaro Kumagai
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Patent number: 9987960Abstract: [Purpose] To provide a vehicle seat having a garnish attached thereto, which is simplified in structure for easy secure attachment of the garnish to a seat cushion of the seat, and also highly improved as to outer appearance quality of the seat cushion. [Means for Achieving the Purpose] A vehicle seat of the present invention includes: a frame 4 formed from a sheet metal, the frame standing upright in a vertical direction thereof; a garnish 1 engaged with and fitted to the frame 4 so as to cover an outer peripheral surface of that frame; a cushion element 3 supported by the frame 4; and a trim cover element 2 covering the cushion element 3. In this vehicle seat, a terminal end portion 20 of the trim cover element 2 is fixedly secured to an outer surface of the garnish 1.Type: GrantFiled: December 24, 2014Date of Patent: June 5, 2018Assignee: TACHI-S CO., LTD.Inventors: Masayuki Taguchi, Naoyuki Makita, Ukyo Miyazawa, Daisuke Fujita, Atsushi Ishii, Kotaro Kumagai
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Patent number: 9981580Abstract: A seat for vehicle includes a skin, a substrate to which the skin is applied, and a connection structure for connecting the substrate and the skin. The skin includes a first skin part, and a second skin part made of a soft material for connecting the first skin part and the connection structure. The connection structure includes a first fold-back portion integrally formed with the second skin part, and a second fold-back portion disposed on the substrate. The first fold-back portion is fitted with the second fold-back portion.Type: GrantFiled: October 21, 2016Date of Patent: May 29, 2018Assignee: TACHI-S CO., LTD.Inventors: Kotaro Kumagai, Atsushi Ishii, Masayuki Taguchi
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Publication number: 20180093596Abstract: A seat apparatus equipped with a seat cover that covers at least part of the seat apparatus surface and is formed by sewing a plurality of skin material pieces together, an operation unit for receiving an operation from an operator, and a covering material for covering the operation unit, wherein: the covering material is formed as part of the skin material pieces, or is formed by sewing a member that is separate from the skin material pieces to the skin material pieces; and a projection is formed that projects in the outward direction from the seat cover when the operation unit is covered.Type: ApplicationFiled: March 11, 2016Publication date: April 5, 2018Inventors: Kotaro KUMAGAI, Masayuki TAGUCHI
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Patent number: D789700Type: GrantFiled: April 25, 2016Date of Patent: June 20, 2017Assignee: TACHI-S CO., LTD.Inventors: Kotaro Kumagai, Atsushi Ishii, Masayuki Taguchi
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Patent number: D790240Type: GrantFiled: April 25, 2016Date of Patent: June 27, 2017Assignee: TACHI-S CO., LTD.Inventors: Kotaro Kumagai, Atsushi Ishii, Masayuki Taguchi
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Patent number: D799872Type: GrantFiled: August 11, 2015Date of Patent: October 17, 2017Assignee: TACHI-S Co., Ltd.Inventors: Masayuki Taguchi, Kotaro Kumagai
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Patent number: D856690Type: GrantFiled: September 8, 2017Date of Patent: August 20, 2019Assignee: TACHI-S CO., LTD.Inventors: Kotaro Kumagai, Masayuki Taguchi
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Patent number: D861361Type: GrantFiled: September 8, 2017Date of Patent: October 1, 2019Assignee: TACHI-S CO., LTD.Inventors: Kotaro Kumagai, Masayuki Taguchi