Patents by Inventor Akio Kuramoto
Akio Kuramoto 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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Patent number: 9236661Abstract: A radiowave absorber of the present invention includes: an upper plate that includes a dielectric material containing conductive particles; a lower plate that is arranged parallel to the upper plate, and includes a dielectric material that contains conductive particles; and a plate-shaped support portion that is arranged between the upper plate and the lower plate, and supports the upper plate and the lower plate.Type: GrantFiled: July 29, 2010Date of Patent: January 12, 2016Assignee: NEC CORPORATIONInventors: Daisuke Iwanaka, Akio Kuramoto, Junichi Fukuda
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Patent number: 8816919Abstract: A first plate-like radiating element including a first side and a second side, the first side being a straight line portion and the second side being curved; and a second plate-like radiating element including a third side and a fourth side, the third side being a straight line portion and the fourth side being curved, are included. The first side of the first radiating element and the third side of the second radiating element are disposed to face each other in parallel and to be shifted in a parallel direction. The second side and the fourth side each preferably include a curve portion. The second side or the fourth side or the second and fourth sides is (are) preferably formed by a combination of one or a plurality of curve portions and one or a plurality of straight line portions.Type: GrantFiled: January 14, 2010Date of Patent: August 26, 2014Assignee: NEC CorporationInventors: Akio Kuramoto, Yoshihide Takahashi
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Patent number: 8742998Abstract: An object is to provide a goods storage tool that enables an antenna to be connected to an electronics device without the need to take out the antenna from a storage object in which the antenna is stored. A goods storage tool of the present invention is a goods storage tool for storing goods or contents therein. The goods storage tool includes an antenna that is stored in the goods storage tool; and a connection portion that enables a feeder connector connected to an electronics device to be connected to the antenna in such a way that the antenna remains stored in the goods storage tool.Type: GrantFiled: August 27, 2009Date of Patent: June 3, 2014Assignee: NEC CorporationInventor: Akio Kuramoto
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Publication number: 20120306712Abstract: A radiowave absorber of the present invention includes: an upper plate that includes a dielectric material containing conductive particles; a lower plate that is arranged parallel to the upper plate, and includes a dielectric material that contains conductive particles; and a plate-shaped support portion that is arranged between the upper plate and the lower plate, and supports the upper plate and the lower plate.Type: ApplicationFiled: July 29, 2010Publication date: December 6, 2012Applicant: NEC CORPORATIONInventors: Daisuke Iwanaka, Akio Kuramoto, Junichi Fukuda
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Patent number: 8314739Abstract: A wideband antenna includes a first radiating element and a second radiating element which are substantially in the same shape of a flat plate. A first side of the first radiating element is parallel to a second side of the second radiating element. Moreover, the first and second radiating elements are so arranged as to be shifted from each other with part of the first side facing part of the second side. If the first and second radiating elements thus arranged are moved in parallel so that the first and second sides face each other and are parallel to each other, the first and second sides substantially have line symmetry. Electricity is supplied to the first and the second radiating elements at a predetermined position where part of the first side faces part of the second side.Type: GrantFiled: April 25, 2008Date of Patent: November 20, 2012Assignee: NEC CorporationInventor: Akio Kuramoto
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Patent number: 8237614Abstract: There are provided a planar antenna that reduces interactions between an antenna section and a peripheral circuit section on each other's electric operations in an apparatus in which an antenna and a peripheral circuit are arranged together on a printed circuit board, and a communication device and a card-type terminal that use the planar antenna. The planar antenna has the antenna section and the peripheral circuit section which are arranged on the printed circuit board.Type: GrantFiled: March 11, 2008Date of Patent: August 7, 2012Assignee: NEC CorporationInventors: Akio Kuramoto, Junichi Fukuda
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Patent number: 8130157Abstract: There is provided a less fragile feeding apparatus for an antenna that can be fitted to clothing. The feeding apparatus uses a coaxial cable for feeding. A center conductor of the coaxial cable is connected to a first radiating element in terms of alternating current at least through capacitive coupling, and an outer conductor of the coaxial cable is connected to a second radiating element in terms of alternating current at least through capacitive coupling.Type: GrantFiled: April 22, 2008Date of Patent: March 6, 2012Assignee: NEC CorporationInventor: Akio Kuramoto
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Patent number: 8125390Abstract: A small-size wide-band antenna (103) includes a radiation element formed on a dielectric substrate (1) and a coaxial cable (2) as power supply unit for supplying dipole potential to the radiating element. The radiation element includes a ground potential unit to which ground potential is supplied via an external conductor (4) of the coaxial cable and an opposite-pole potential unit to which a potential forming a pair with the ground potential is supplied via a center conductor (3) of the coaxial cable. The ground potential unit includes a pair of conductors (13,14) formed in a tapered shape on the front and rear surfaces of the dielectric substrate and mutually capacitively coupled. The opposite-pole potential unit includes a pair of conductors (31,32) formed in a tapered shape on the front and rear surfaces of the dielectric substrate and mutually capacitively coupled. Each of the ground potential unit and opposite-pole potential unit has a power supply point at a tapered apex of the conductor (13,31).Type: GrantFiled: February 15, 2007Date of Patent: February 28, 2012Assignees: NEC Corporation, Renesas Electronics CorporationInventors: Akio Kuramoto, Takuji Mochizuki
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Publication number: 20110273345Abstract: A first plate-like radiating element including a first side and a second side, the first side being a straight line portion and the second side being curved; and a second plate-like radiating element including a third side and a fourth side, the third side being a straight line portion and the fourth side being curved, are included. The first side of the first radiating element and the third side of the second radiating element are disposed to face each other in parallel and to be shifted in a parallel direction. The second side and the fourth side each preferably include a curve portion. The second side or the fourth side or the second and fourth sides is(are) preferably formed by a combination of one or a plurality of curve portions and one or a plurality of straight line portions.Type: ApplicationFiled: January 14, 2010Publication date: November 10, 2011Inventors: Akio Kuramoto, Yoshihide Takahashi
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Publication number: 20110140976Abstract: An object is to provide a goods storage tool that enables an antenna to be connected to an electronics device without the need to take out the antenna from a storage object in which the antenna is stored. A goods storage tool of the present invention is a goods storage tool for storing goods or contents therein. The goods storage tool includes an antenna that is stored in the goods storage tool; and a connection portion that enables a feeder connector connected to an electronics device to be connected to the antenna in such a way that the antenna remains stored in the goods storage tool.Type: ApplicationFiled: August 27, 2009Publication date: June 16, 2011Inventor: Akio Kuramoto
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Patent number: 7948445Abstract: Provided are a first planar radiating element and second planar radiating element that have at least one side. At least the first or second radiating element has a strip-shaped element. A first side of the first radiating element and a second side of the second radiating element are so disposed as to be parallel to each other, face each other and be shifted slightly in a parallel direction. The strip-shaped element is so disposed as to be connected to any side other than the first and second sides of the first and second radiating elements, run parallel to the first and second sides, and not go beyond tips positioned at the outermost points of the first and second sides.Type: GrantFiled: February 17, 2009Date of Patent: May 24, 2011Assignee: NEC CorporationInventor: Akio Kuramoto
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Patent number: 7936314Abstract: To provide a dual polarized antenna capable of reducing correlation between antenna elements. A dual polarized antenna is constituted by a vertically polarized antenna and a horizontally polarized antenna formed on a printed circuit board and radiates two kinds of polarized waves.Type: GrantFiled: April 11, 2008Date of Patent: May 3, 2011Assignee: NEC CorporationInventors: Akio Kuramoto, Hiroyuki Yusa
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Publication number: 20100321273Abstract: Provided are a first planar radiating element and second planar radiating element that have at least one side. At least the first or second radiating element has a strip-shaped element. A first side of the first radiating element and a second side of the second radiating element are so disposed as to be parallel to each other, face each other and be shifted slightly in a parallel direction. The strip-shaped element is so disposed as to be connected to any side other than the first and second sides of the first and second radiating elements, run parallel to the first and second sides, and not go beyond tips positioned at the outermost points of the first and second sides.Type: ApplicationFiled: February 17, 2009Publication date: December 23, 2010Inventor: Akio Kuramoto
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Publication number: 20100231477Abstract: A small-size wide-band antenna (103) includes a radiation element formed on a dielectric substrate (1) and a coaxial cable (2) as power supply unit for supplying dipole potential to the radiating element. The radiation element includes a ground potential unit to which ground potential is supplied via an external conductor (4) of the coaxial cable and an opposite-pole potential unit to which a potential forming a pair with the ground potential is supplied via a center conductor (3) of the coaxial cable. The ground potential unit includes a pair of conductors (13,14) formed in a tapered shape on the front and rear surfaces of the dielectric substrate and mutually capacitively coupled. The opposite-pole potential unit includes a pair of conductors (31,32) formed in a tapered shape on the front and rear surfaces of the dielectric substrate and mutually capacitively coupled. Each of the ground potential unit and opposite-pole potential unit has a power supply point at a tapered apex of the conductor (13,31).Type: ApplicationFiled: February 15, 2007Publication date: September 16, 2010Inventors: Akio Kuramoto, Takuji Mochizuki
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Publication number: 20100141541Abstract: A wideband antenna includes a first radiating element and a second radiating element which are substantially in the same shape of a flat plate. A first side of the first radiating element is parallel to a second side of the second radiating element. Moreover, the first and second radiating elements are so arranged as to be shifted from each other with part of the first side facing part of the second side. If the first and second radiating elements thus arranged are moved in parallel so that the first and second sides face each other and are parallel to each other, the first and second sides substantially have line symmetry. Electricity is supplied to the first and the second radiating elements at a predetermined position where part of the first side faces part of the second side.Type: ApplicationFiled: April 25, 2008Publication date: June 10, 2010Applicant: NEC CORPORATIONInventor: Akio Kuramoto
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Publication number: 20100090787Abstract: There is provided a less fragile feeding apparatus for an antenna that can be fitted to clothing. The feeding apparatus uses a coaxial cable for feeding. A center conductor of the coaxial cable is connected to a first radiating element in terms of alternating current at least through capacitive coupling, and an outer conductor of the coaxial cable is connected to a second radiating element in terms of alternating current at least through capacitive coupling.Type: ApplicationFiled: April 22, 2008Publication date: April 15, 2010Inventor: Akio Kuramoto
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Publication number: 20100026586Abstract: There are provided a planar antenna that reduces interactions between an antenna section and a peripheral circuit section on each other's electric operations in an apparatus in which an antenna and a peripheral circuit are arranged together on a printed circuit board, and a communication device and a card-type terminal that use the planar antenna. The planar antenna has the antenna section and the peripheral circuit section which are arranged on the printed circuit board.Type: ApplicationFiled: March 11, 2008Publication date: February 4, 2010Inventors: Akio Kuramoto, Junichi Fukuda
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Publication number: 20100007573Abstract: An antenna having two beams low in correlation and effective for MIMO is provided. The antenna includes a first array antenna and a second array antenna. The first array antenna and the second array antenna have directivities different in direction, respectively. A maximum radiation direction of a combined beam from the first array antenna is oriented to a direction of ?1. A maximum radiation direction of a combined beam from the second array antenna is oriented to a direction of ?2 corresponding to a null point of the combined beam from the first array antenna.Type: ApplicationFiled: April 9, 2008Publication date: January 14, 2010Inventors: Akio Kuramoto, Hiroyuki Yusa
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Publication number: 20090303136Abstract: An antenna device which is very compact, low in profile, wide in bandwidth, simple in configuration and inexpensive is provided. A plate type wideband antenna device according to the present invention is formed with a radiation element which is formed by bending a tapered conductor plate 11 into a rough squared U shape, a conductor 12 which serves as a ground plate and a coaxial cable 1 which feeds power, and is configured by connecting the coaxial center conductor 2 of the coaxial cable to the tapered conductor 11 of a squared U shape and connecting the coaxial external conductor 3 to the ground plate 12. By this, a very small antenna device whose entire size is 0.2 wavelengths long, 0.1 wavelengths wide and 0.1 wavelengths high relative to the frequency used is obtained.Type: ApplicationFiled: January 31, 2007Publication date: December 10, 2009Inventors: Akio Kuramoto, Takuji Mochizuki
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Patent number: D619568Type: GrantFiled: April 14, 2009Date of Patent: July 13, 2010Assignee: NEC CorporationInventor: Akio Kuramoto