Patents by Inventor Kazuo Shigeta
Kazuo Shigeta 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: 20220278444Abstract: An upper structure of a vehicle includes a roof covering an upper portion of a cabin space; an antenna device including a casing disposed on an upper surface of the roof and an antenna accommodated in the casing for transmitting and receiving radio waves; a resin member arranged adjacent to the antenna device; and a metal member attached to the resin member and forming a metal layer. The antenna is for transmitting and receiving a radio wave directed to the upper surface of the roof and an upper surface of the resin member. The metal member is arranged to reflect the radio wave directed to the upper surface of the resin member.Type: ApplicationFiled: June 24, 2020Publication date: September 1, 2022Applicant: MAZDA MOTOR CORPORATIONInventors: Yasuhito TANIOKA, Kazuo SHIGETA, Yoshiaki HIRASA, Toshiyuki SHIMURA, Masaki NUMOTO, Koichi MIYAKE
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Patent number: 10541463Abstract: The present application discloses a glass antenna arranged on a vehicular window glass. The glass antenna includes: a feeding terminal connected to an antenna amplifier; a first antenna connected to the feeding terminal and set so as to receive a radio frequency signal in a first frequency band which has a first wavelength at a central frequency of the first frequency band; a coupling element having a length set based on a length obtained by multiplying one-half of the first wavelength by a glass reduction rate, coupling element being connected to the feeding terminal; and a second antenna capacitively coupled to the coupling element and set so as to receive a radio frequency signal in a second frequency band which has a second wavelength at a central frequency of the second frequency band.Type: GrantFiled: March 16, 2017Date of Patent: January 21, 2020Assignee: MAZDA MOTOR CORPORATIONInventors: Kazuo Shigeta, Tatsuaki Taniguchi, Yoshiaki Hirasa, Koichi Miyake
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Publication number: 20180277924Abstract: The present application discloses a glass antenna arranged on a vehicular window glass. The glass antenna includes: a feeding terminal connected to an antenna amplifier; a first antenna connected to the feeding terminal and set so as to receive a radio frequency signal in a first frequency band which has a first wavelength at a central frequency of the first frequency band; a coupling element having a length set based on a length obtained by multiplying one-half of the first wavelength by a glass reduction rate, coupling element being connected to the feeding terminal; and a second antenna capacitively coupled to the coupling element and set so as to receive a radio frequency signal in a second frequency band which has a second wavelength at a central frequency of the second frequency band.Type: ApplicationFiled: March 16, 2017Publication date: September 27, 2018Applicant: MAZDA MOTOR CORPORATIONInventors: Kazuo SHIGETA, Tatsuaki TANIGUCHI, Yoshiaki HIRASA, Koichi MIYAKE
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Patent number: 8759227Abstract: A method for processing a target object includes arranging a first electrode and a second electrode for supporting the target object in parallel to each other in a processing chamber and processing the target object supported by the second electrode by using a plasma of a processing gas supplied into the processing chamber, the plasma being generated between the first electrode and the second electrode by applying a high frequency power between the first electrode and the second electrode. The target object includes an organic film and a photoresist layer formed on the organic film. The processing gas contains H2 gas, and the organic film is etched by a plasma containing H2 by using the photoresist layer as a mask while applying a negative DC voltage to the first electrode.Type: GrantFiled: September 7, 2010Date of Patent: June 24, 2014Assignee: Tokyo Electron LimitedInventors: Kazuki Narishige, Kazuo Shigeta
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Publication number: 20110059616Abstract: A method for processing a target object includes arranging a first electrode and a second electrode for supporting the target object in parallel to each other in a processing chamber and processing the target object supported by the second electrode by using a plasma of a processing gas supplied into the processing chamber, the plasma being generated between the first electrode and the second electrode by applying a high frequency power between the first electrode and the second electrode. The target object includes an organic film and a photoresist layer formed on the organic film. The processing gas contains H2 gas, and the organic film is etched by a plasma containing H2 by using the photoresist layer as a mask while applying a negative DC voltage to the first electrode.Type: ApplicationFiled: September 7, 2010Publication date: March 10, 2011Applicant: TOKYO ELECTRON LIMITEDInventors: Kazuki NARISHIGE, Kazuo SHIGETA
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Patent number: 7642976Abstract: There is provided an AM/FM receiving antenna, which is provided at a windowpane of a vehicle, comprising an AM antenna element including an end portion as a power supply point and another end portion forming an open end, and an AM/FM antenna element connected to the AM antenna element via the power supply point, wherein a distance L between the end portion and the another end portion of the AM antenna element, a reduction ratio ? of a material of the windowpane, a minimum wavelength ?min of a receiving FM frequency band, and a maximum wavelength ?max of the receiving FM frequency band meet a requirement equation of ?·?min/2?L??·?max/2. The AM/FM receiving antenna can properly achieve the compatibility of receiving sensitivity of the AM and FM electric waves, having a smaller layout space for antenna elements.Type: GrantFiled: December 21, 2007Date of Patent: January 5, 2010Assignee: Mazda Motor CorporationInventors: Tatsuaki Taniguchi, Kazuo Shigeta
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Publication number: 20080169990Abstract: There is provided an AM/FM receiving antenna, which is provided at a windowpane of a vehicle, comprising an AM antenna element including an end portion as a power supply point and another end portion forming an open end, and an AM/FM antenna element connected to the AM antenna element via the power supply point, wherein a distance L between the end portion and the another end portion of the AM antenna element, a reduction ratio ? of a material of the windowpane, a minimum wavelength ?min of a receiving FM frequency band, and a maximum wavelength ?max of the receiving FM frequency band meet a requirement equation of ?·?min/2?L??·?max/2. The AM/FM receiving antenna can properly achieve the compatibility of receiving sensitivity of the AM and FM electric waves, having a smaller layout space for antenna elements.Type: ApplicationFiled: December 21, 2007Publication date: July 17, 2008Applicant: MAZDA MOTOR CORPORATIONInventors: Tatsuaki TANIGUCHI, Kazuo SHIGETA
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Patent number: 6919848Abstract: In an antenna apparatus for a vehicle, the antenna apparatus being provided on the vehicle in which at least a part of an outside plank panel of the vehicle is constituted by an outer panel made of a synthetic resin material, the antenna apparatus has at least one non-earthed type antenna, the non-earthed type antenna is provided with a first antenna element connected to an inner conductor of a coaxial cable via a first feeding point, and a second antenna element connected to an outer conductor of the coaxial cable via a second feeding point, and at least both the first and second antenna elements and both the first and second feeding points are arranged in a portion which is inside the outer panel made of the synthetic resin material and is apart from the earthed conductor on the part of the vehicle body, thereby it is possible to improve a receiving performance of a radio wave having a short wavelength, and can restrict an influence of a noise.Type: GrantFiled: June 24, 2003Date of Patent: July 19, 2005Assignees: Harada Industry Co., Ltd., Mazda Motor CorporationInventors: Katsushiro Ishibayashi, Tatsuaki Taniguchi, Kazuo Shigeta
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Publication number: 20040217906Abstract: In an antenna apparatus for a vehicle, the antenna apparatus being provided on the vehicle in which at least a part of an outside plank panel of the vehicle is constituted by an outer panel made of a synthetic resin material, the antenna apparatus has at least one non-earthed type antenna, the non-earthed type antenna is provided with a first antenna element connected to an inner conductor of a coaxial cable via a first feeding point, and a second antenna element connected to an outer conductor of the coaxial cable via a second feeding point, and at least both the first and second antenna elements and both the first and second feeding points are arranged in a portion which is inside the outer panel made of the synthetic resin material and is apart from the earthed conductor on the part of the vehicle body, thereby it is possible to improve a receiving performance of a radio wave having a short wavelength, and can restrict an influence of a noise.Type: ApplicationFiled: June 24, 2003Publication date: November 4, 2004Applicants: HARADA INDUSTRY CO., LTD., MAZDA MOTOR CORPORATIONInventors: Katsushiro Ishibayashi, Tatsuaki Taniguchi, Kazuo Shigeta
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Patent number: 6310580Abstract: An antenna structure for a vehicle which includes an antenna which is disposed as a print or sticker antenna on a front window glass (FW) and is used to receive FM and AM waves, has a loop-shaped (e.g., reverse-convex-shaped) antenna element (1) which is disposed near the upper edge portion of the FW, one antenna element (2) which is connected in a DC manner to the lower side portion of the loop shape defined by the antenna element (1), and nearly vertically descends toward the lower edge portion of the FW substantially at its center in the widthwise direction of the vehicle, and a feeder distribution center (P) formed on the upper side portion of the loop shape defined by the antenna element (1), and the antenna elements (1, 2) are formed of silver paste containing dark carbon particles.Type: GrantFiled: January 18, 2001Date of Patent: October 30, 2001Assignee: Mazda Motor CorporationInventors: Tatsuaki Taniguchi, Kazuo Shigeta
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Publication number: 20010010506Abstract: An antenna structure for a vehicle which includes an antenna which is disposed as a print or sticker antenna on a front window glass (FW) and is used to receive FM and AM waves, has a loop-shaped (e.g., reverse-convex-shaped) antenna element (1) which is disposed near the upper edge portion of the FW, one antenna element (2) which is connected in a DC manner to the lower side portion of the loop shape defined by the antenna element (1), and nearly vertically descends toward the lower edge portion of the FW substantially at its center in the widthwise direction of the vehicle, and a feeder distribution center (P) formed on the upper side portion of the loop shape defined by the antenna element (1), and the antenna elements (1, 2) are formed of silver paste containing dark carbon particles.Type: ApplicationFiled: January 18, 2001Publication date: August 2, 2001Inventors: Tatsuaki Taniguchi, Kazuo Shigeta
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Patent number: 6121934Abstract: A glass antenna device for a vehicle includes an FM antenna (as a receiving antenna for short-waves) and a defogger provided on a rear window glass of the vehicle, and an AM antenna (as a receiving antenna for medium-waves) provided on a side window glass fixed at a different position from the rear window glass of the vehicle. Since the AM antenna is spaced relatively far distant from electric equipments such as a rear wiper, stop lamps and indicators disposed at a rear portion of the vehicle, noises generated from the electric equipments are unlikely to be mixed in a transmission line of the antenna device.Type: GrantFiled: March 10, 1999Date of Patent: September 19, 2000Assignee: Nippon Sheet Glass Co., Ltd.Inventors: Tatsuaki Taniguchi, Kazuo Shigeta, Hiroshi Iijima
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Patent number: 6115001Abstract: An earth configuration achieving easy installment without deteriorating performance of an antenna device. The antenna device has a balanced antenna element, a shield plate arranged between the balanced antenna element and a conductor of a car, and a supporting member, and the shield plate blocks electrical coupling of the conductor from the balanced antenna element when the antenna device is mounted on the body of the car.Type: GrantFiled: August 12, 1998Date of Patent: September 5, 2000Assignee: Mazda Motor CorporationInventors: Tatsuaki Taniguchi, Kazuo Shigeta
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Patent number: 6018322Abstract: Disclosed is an earth structure which can be easily attached without degrading the antenna performance. The earth structure for grounding a feeder line for transmitting a signal received from an antenna to a receiver or the like has a long earth member having a predetermined length and one end connected to a ground wire of the feeder line. A portion from one end to the other end of the long earth member is not grounded, and the other end is open.Type: GrantFiled: March 13, 1997Date of Patent: January 25, 2000Assignee: Mazda Motor CorporationInventors: Tatsuaki Taniguchi, Kazuo Shigeta, Kenji Kubota
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Patent number: 6016128Abstract: A GPS wave antenna apparatus according to the present invention includes a substrate unit having a printed board on which an antenna constituting element including a GPS wave antenna element is mounted integrally as one component, a case having an opening portion at one end, for detachably receiving the substrate unit through the opening portion, and a conductive plate attached to the case so as to block the opening portion and arranged opposite to the GPS wave antenna element at a fixed distance therebetween. The GPS wave antenna element has a thin-film conductive pattern, and the substrate unit includes a low noise amplifier provided on the printed board and a feeder connected to a feeder section of the antenna element through the low noise amplifier.Type: GrantFiled: September 2, 1998Date of Patent: January 18, 2000Assignee: Harada Industry Co., Ltd.Inventors: Yutaka Imamura, Tatsuaki Taniguchi, Kazuo Shigeta
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Patent number: 6008767Abstract: A glass antenna having a high reception sensitivity while not blocking a driver's sight. On a window glass, a longitudinal length y of a pattern of the glass antenna is set so as to satisfy y.ltoreq..lambda./4.multidot..alpha. (.lambda.: reception frequency wavelength; .alpha.: glass reduction ratio), and a transversal length x of the pattern is set so as to satisfy 60 cm-y.gtoreq.x.Type: GrantFiled: August 26, 1996Date of Patent: December 28, 1999Assignee: Mazda Motor CorporationInventors: Tatsuaki Taniguchi, Kazuo Shigeta, Kenji Kubota
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Patent number: 6002373Abstract: A glass antenna has a rectangular loop antenna element which is extended on the upper region of a windshield glass where no heating wires of a defogger are arranged, and is capacitively coupled to the uppermost heating wire of the defogger at a predetermined capacitance, and a T-shaped second antenna element which is arranged on a region where the defogger is arranged, and is capacitively coupled to the uppermost heating wire of the defogger.Type: GrantFiled: June 20, 1997Date of Patent: December 14, 1999Assignee: Mazda Motor CorporationInventors: Tatsuaki Taniguchi, Kazuo Shigeta, Kenji Kubota
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Patent number: 5952977Abstract: A glass antenna system with good rear visibility. A glass antenna has a first antenna conductor element extending on a blank region where no defogger hot wires extend, a second antenna conductor element which is capacitively coupled to the first antenna conductor element in a defogger region, a third antenna conductor element which extends at a position substantially symmetrical to the first antenna conductor element about the central line of the defogger, and a fourth antenna conductor element which extends at a position substantially symmetrical to the second antenna conductor element about the central line, and is capacitively coupled to the third antenna conductor element.Type: GrantFiled: November 2, 1995Date of Patent: September 14, 1999Assignee: Mazda Motor CorporationInventors: Tatsuaki Taniguchi, Kazuo Shigeta, Kenji Kubota
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Patent number: 5793333Abstract: A vehicle glass antenna for receiving FM and AM radio waves, includes a first antenna line which vertically extends on a glass of the vehicle so as to receive the FM radio waves, and has a feeding point on the edge of the glass, and a second antenna line which is connected to the first antenna line at a position in the neighborhood of the feeding point so as to receive the radio waves in the AM band, and extends by a predetermined length in a loop pattern along the edge of the glass.Type: GrantFiled: March 19, 1996Date of Patent: August 11, 1998Assignee: Mazda Motor CorporationInventors: Tatsuaki Taniguchi, Shigeyuki Satomura, Kazuo Shigeta, Kenji Kubota
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Patent number: 5659324Abstract: A glass antenna having a defogger and an antenna conductor each extending on a glass comprises a first antenna conductor element extending along the glass surface and a second antenna conductor element which extends upward and downward along the glass surface substantially at the center of the defogger in a vehicle width direction in the region to which the defogger extends and a portion of which is coupled to a heating wire of the defogger through a direct current, wherein the first antenna conductor element is disposed to the defogger so that the heating wire connected the second antenna conductor element is coupled to the first antenna conductor element through capacitive coupling with a capacitance of about 40 pF or less.Type: GrantFiled: December 23, 1994Date of Patent: August 19, 1997Assignee: Mazda Motor CorporationInventors: Tatsuaki Taniguchi, Eiichi Yamamoto, Kenji Kubota, Kazuo Shigeta