Patents by Inventor Kazuhiko Niwano
Kazuhiko Niwano 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: 11697272Abstract: A laminated glass according to the present invention includes a first glass plate, a second glass plate, and an interlayer film. The interlayer film includes a laminated region including a first layer that is in contact with the first glass plate, a second layer that is in contact with the second glass plate, and a third layer disposed between the first layer and the second layer. When the relative dielectric constant of the first glass plate is denoted by ?g1, the relative dielectric constant of the second glass plate is denoted by ?g2, the relative dielectric constant of the first layer is denoted by ?m1, the relative dielectric constant of the second layer is denoted by ?m2, and the relative dielectric constant of the third layer is denoted by ?m3, relationships ?m1<?g1, ?m1<?g2, ?m2<?g1, ?m2<?g2, ?m3>?m1, ?m3>?m2 are established.Type: GrantFiled: May 17, 2022Date of Patent: July 11, 2023Assignee: AGC INC.Inventors: Shunsuke Sadakane, Shoichi Takeuchi, Hideo Tsuboi, Kazuhiko Niwano, Nobutaka Kidera, Ryota Okuda
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Publication number: 20220363038Abstract: A laminated glass according to an embodiment of the present invention includes a first glass plate, a second glass plate, and an interlayer film held between the first glass plate and the second glass plate. When a relative dielectric constant of the first glass plate is represented by ?g1; a relative dielectric constant of the second glass plate is represented by ?g2; a relative dielectric constant of a first interlayer film provided in a first region of the interlayer film is represented by ?m1; a reflection coefficient at an interface between the first glass plate and the first interlayer film is represented by ?1; and a reflection coefficient at an interface between the second glass plate and the first interlayer film is represented by ?2, the reflection coefficients ?1 and ?2 satisfy relations 0.0??1?0.2 and 0.0??2?0.2.Type: ApplicationFiled: July 26, 2022Publication date: November 17, 2022Applicant: AGC Inc.Inventors: Nobutaka KIDERA, Kazuhiko NIWANO, Shoichi TAKEUCHI, Tetsuo ABE, Yutaka KUROIWA
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Publication number: 20220352620Abstract: An antenna device including a transparent antenna element that can be provided at a position visible from outside of a transparent cover of an electronic apparatus is provided. An antenna device includes a flexible substrate that is transparent and that is to be provided on an inner surface side opposite to an outer surface of a transparent cover, made of glass or resin, of an electronic apparatus, and an antenna element that is transparent and that is to be provided at a position, of the flexible substrate, that is visible from outside of the transparent cover, the antenna element having a directivity oriented toward an outside of the electronic apparatus.Type: ApplicationFiled: July 15, 2022Publication date: November 3, 2022Applicant: AGC Inc.Inventors: Yasuo MORIMOTO, Akira KUMAGAI, Takeshi MOTEGI, Kazuhiko NIWANO, Kouichirou TAKAHASHI
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Publication number: 20220274380Abstract: A laminated glass according to the present invention includes a first glass plate, a second glass plate, and an interlayer film. The interlayer film includes a laminated region including a first layer that is in contact with the first glass plate, a second layer that is in contact with the second glass plate, and a third layer disposed between the first layer and the second layer. When the relative dielectric constant of the first glass plate is denoted by ?g1, the relative dielectric constant of the second glass plate is denoted by ?g2, the relative dielectric constant of the first layer is denoted by ?m1, the relative dielectric constant of the second layer is denoted by ?m2, and the relative dielectric constant of the third layer is denoted by ?m3, relationships ?m1<?g1, ?m1<?g2, ?m2<?g1, ?m2<?g2, ?m3>?m1, ?m3>?m2 are established.Type: ApplicationFiled: May 17, 2022Publication date: September 1, 2022Applicant: AGC Inc.Inventors: Shunsuke SADAKANE, Shoichi TAKEUCHI, Hideo TSUBOI, Kazuhiko NIWANO, Nobutaka KIDERA, Ryota OKUDA
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Patent number: 10651535Abstract: An antenna device is to be installed in a vehicle. The antenna device includes a first element; a second element; and a feeding part. An angle formed between an electric field plane generated at the first element and the second element and a direction of a long side of the vehicle is within a range of ±45 degrees.Type: GrantFiled: March 14, 2017Date of Patent: May 12, 2020Assignee: AGC INC.Inventors: Kazuhiko Niwano, Koji Ikawa
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Patent number: 10135114Abstract: A MIMO antenna includes a plurality of antenna elements respectively including a plurality of conductive elements that are connected to different feeding points from each other; and one or more base members each being directly or indirectly provided at an upper edge portion of a windshield of a vehicle, the conductive elements being provided at either of the base members, wherein D/W, where “W” is a width of an open portion of a window frame at which the windshield is provided and “D” is a minimum distance between the conductive elements of the antenna elements in a direction parallel to the direction of “W”, is less than or equal to 0.35.Type: GrantFiled: January 20, 2016Date of Patent: November 20, 2018Assignee: AGC Inc.Inventors: Kazuhiko Niwano, Kouichirou Takahashi, Koji Ikawa
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Publication number: 20170187090Abstract: An antenna device is to be installed in a vehicle. The antenna device includes a first element; a second element; and a feeding part. An angle formed between an electric field plane generated at the first element and the second element and a direction of a long side of the vehicle is within a range of ±45 degrees.Type: ApplicationFiled: March 14, 2017Publication date: June 29, 2017Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Kazuhiko NIWANO, Koji IKAWA
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Publication number: 20160226127Abstract: A MIMO antenna includes a plurality of antenna elements respectively including a plurality of conductive elements that are connected to different feeding points from each other; and one or more base members each being directly or indirectly provided at an upper edge portion of a windshield of a vehicle, the conductive elements being provided at either of the base members, wherein D/W, where “W” is a width of an open portion of a window frame at which the windshield is provided and “D” is a minimum distance between the conductive elements of the antenna elements in a direction parallel to the direction of “W”, is less than or equal to 0.35.Type: ApplicationFiled: January 20, 2016Publication date: August 4, 2016Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Kazuhiko Niwano, Kouichirou Takahashi, Koji Ikawa
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Patent number: 9130250Abstract: A process for producing a metamaterial excellent in productivity is provided. The present invention relates to a process for producing a metamaterial including an electromagnetic wave resonator resonating with an electromagnetic wave, the process including: vapor-depositing a material which can form the electromagnetic wave resonator to a support having a shape corresponding to a shape of the electromagnetic wave resonator to thereby arrange the electromagnetic wave resonator on the support.Type: GrantFiled: January 14, 2013Date of Patent: September 8, 2015Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Kenji Kitaoka, Kazuhiko Niwano
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Patent number: 8356757Abstract: An RFID tag has an antenna element including an antenna substrate equipped with an IC chip and a conductor pattern, an artificial medium, and a first insulation layer sandwiched between the antenna element and the artificial medium. The artificial medium has a single first conductive element placed on an upper surface of a dielectric layer and a single second conductive element placed on a lower surface of the dielectric layer.Type: GrantFiled: January 31, 2011Date of Patent: January 22, 2013Assignee: Asahi Glass Company, LimitedInventors: Ryuta Sonoda, Koji Ikawa, Kazuhiko Niwano, Kouji Koganezawa
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Patent number: 8344964Abstract: An artificial medium includes: a dielectric layer having a front surface and a back surface; a plurality of first grid lines respectively formed on the front surface and the back surface and extending in a first direction and a plurality of second grid lines extending in a second direction different from the first direction; and electrically conductive elements respectively formed on the front surface and the back surface of the dielectric layer and located in areas where the first grid lines intersect the second grid lines, wherein when an electromagnetic wave propagated in the direction of the thickness of the dielectric layer is incident, a current excited by the electromagnetic wave is increased in a prescribed operating frequency and a current loop is formed in a plane parallel to the direction of the thickness.Type: GrantFiled: August 25, 2010Date of Patent: January 1, 2013Assignee: Asahi Glass Company, LimitedInventors: Koji Ikawa, Masahide Koga, Fuminori Watanabe, Ryuta Sonoda, Kazuhiko Niwano
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Publication number: 20120261478Abstract: An RFID tag is characterized by including a loop feeding element formed on a base material; an IC chip that is electrically connected to the loop feeding element and that is laid on the base material; and an artificial medium that includes a dielectric layer having a first surface and a second surface, a first conductive layer laid over the first surface, and a second conductive layer laid over the second surface and on which the base material is stacked, wherein the first surface is placed closer to the loop feeding element than the second surface; and, when viewed from a stack direction in which the loop feeding element is stacked on the artificial medium, the loop feeding element is placed so as to enclose a part of an edge portion of the first conductive layer of the artificial medium.Type: ApplicationFiled: June 22, 2012Publication date: October 18, 2012Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Ryuta SONODA, Koji Ikawa, Kazuhiko Niwano, Tetsuya Yanoshita
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Publication number: 20110168788Abstract: An RFID tag has an antenna element including an antenna substrate equipped with an IC chip and a conductor pattern, an artificial medium, and a first insulation layer sandwiched between the antenna element and the artificial medium. The artificial medium has a single first conductive element placed on an upper surface of a dielectric layer and a single second conductive element placed on a lower surface of the dielectric layer.Type: ApplicationFiled: January 31, 2011Publication date: July 14, 2011Inventors: Ryuta Sonoda, Koji Ikawa, Kazuhiko Niwano, Kouji Koganezawa
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Publication number: 20110102297Abstract: An artificial medium includes: a dielectric layer having a front surface and a back surface; a plurality of first grid lines respectively formed on the front surface and the back surface and extending in a first direction and a plurality of second grid lines extending in a second direction different from the first direction; and electrically conductive elements respectively formed on the front surface and the back surface of the dielectric layer and located in areas where the first grid lines intersect the second grid lines, wherein when an electromagnetic wave propagated in the direction of the thickness of the dielectric layer is incident, a current excited by the electromagnetic wave is increased in a prescribed operating frequency and a current loop is formed in a plane parallel to the direction of the thickness.Type: ApplicationFiled: August 25, 2010Publication date: May 5, 2011Inventors: Koji Ikawa, Masahide Koga, Fuminori Watanabe, Ryuta Sonoda, Kazuhiko Niwano
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Publication number: 20100053019Abstract: An artificial medium on which two or more conductive surfaces are provided in a thickness direction, the conductive surface being provided with conductive elements in a two-dimensional periodic array, wherein when an electromagnetic wave propagated in parallel to the thickness direction is incident on the artificial medium, a current excited by the electromagnetic wave increases in an operation frequency, and a current loop is formed in a surface parallel to the thickness direction is provided.Type: ApplicationFiled: November 6, 2009Publication date: March 4, 2010Inventors: Kohji Ikawa, Masahide Koga, Ryuta Sonoda, Fuminori Watanabe, Kazuhiko Niwano
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Publication number: 20090052030Abstract: The present invention provides a wire-grid polarizer showing high polarization separation ability in the visible light region and is excellent in heat resistance and durability; and a process for producing such a wire-grid polarizer with high productivity, which enables to produce a polarizer of large area. A process for producing a wire-grid polarizer, comprising a step of coating a supporting substrate with a photocurable composition, a step of pressing a mold having a plurality of parallel grooves at a constant pitch against the photocurable composition so that the grooves contact with the photocurable composition, a step of curing the photocurable composition in a state that the mold is pressed against the photocurable composition, to form a light-transmitting substrate having a plurality of ridges corresponding to the grooves of the mold, a step of separating the mold from the light-transmitting substrate, and a step of forming fine metalic wires on the ridges of the light-transmitting substrate.Type: ApplicationFiled: October 7, 2008Publication date: February 26, 2009Applicant: Asahi Glass Company, LimitedInventors: Yuriko KAIDA, Hiroshi Sakamoto, Hiromi Sakurai, Yasuhide Kawaguchi, Akihiko Asakawa, Kazuhiko Niwano
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Patent number: 7176837Abstract: The radiating conductor in an antenna device comprises first forming elements, second forming elements and third forming elements disposed to be coupled in one direction. The first forming elements are formed in a semi-circular shape, and the third forming elements are formed in a band-like shape and have feed points disposed therein. The first forming elements, the second forming elements and the third forming elements have respective maximum lengths gradually reduced in this order.Type: GrantFiled: July 21, 2005Date of Patent: February 13, 2007Assignee: Asahi Glass Company, LimitedInventors: Ryuta Sonoda, Fuminori Watanabe, Koji Ikawa, Kazuhiko Niwano
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Patent number: 7106256Abstract: An antenna body is configured to comprise a dielectric member including a planar radiating conductor and a feeder. The radiating conductor is configured by combining a first forming element and a second forming element so as to share one portion, the first forming element having a circular shape, and the second forming element having a semi-oval shape. The feeder is connected to the radiating conductor at a peripheral portion in the second forming element, which is located on a side of the second forming element seen from the first forming element.Type: GrantFiled: October 29, 2004Date of Patent: September 12, 2006Assignee: Asahi Glass Company, LimitedInventors: Fuminori Watanabe, Ryuta Sonoda, Koji Ikawa, Kazuhiko Niwano
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Publication number: 20060038723Abstract: An antenna body is configured to comprise a dielectric member including a planar radiating conductor and a feeder. The radiating conductor is configured by combining a first forming element and a second forming element so as to share one portion, the first forming element having a circular shape, and the second forming element having a semi-oval shape. The feeder is connected to the radiating conductor at a peripheral portion in the second forming element, which is located on a side of the second forming element seen from the first forming element.Type: ApplicationFiled: October 29, 2004Publication date: February 23, 2006Applicant: Asahi Glass Company, LimitedInventors: Fuminori Watanabe, Ryuta Sonoda, Koji Ikawa, Kazuhiko Niwano
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Publication number: 20060022876Abstract: The radiating conductor in an antenna device comprises first forming elements, second forming elements and third forming elements disposed to be coupled in one direction. The first forming elements are formed in a semi-circular shape, and the third forming elements are formed in a band-like shape and have feed points disposed therein. The first forming elements, the second forming elements and the third forming elements have respective maximum lengths gradually reduced in this order.Type: ApplicationFiled: July 21, 2005Publication date: February 2, 2006Applicant: Asahi Glass Company, LimitedInventors: Ryuta Sonoda, Fuminori Watanabe, Koji Ikawa, Kazuhiko Niwano