Patents by Inventor Jun Koujima
Jun Koujima 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: 11942701Abstract: A module substrate antenna (1) includes a first coil (7) and a second coil (8) that are connected in parallel. The first coil (7) is composed of a pattern in which a spiral first antenna coil pattern (3a) and a spiral second antenna coil pattern (5a) are interlayer-connected in series. The second coil (8) is composed of a pattern in which a spiral third antenna coil pattern (4a) and a spiral fourth antenna coil pattern (6a) are interlayer-connected in series. The coil patterns are arranged in order of the first antenna coil pattern (3a), the third antenna coil pattern (4a), the second antenna coil pattern (5a), and the fourth antenna coil pattern (6a).Type: GrantFiled: December 1, 2020Date of Patent: March 26, 2024Assignee: TODA KOGYO CORP.Inventor: Jun Koujima
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Patent number: 11551851Abstract: A module substrate antenna includes: a laminate in which a plurality of ferrite layers are stacked; antennal coils provided on surfaces of the respective ferrite layers; a connection pad connected to an external circuit; and a lead wire provided between the laminate and the connection pad. In the laminate, the antenna coils are two types of the antenna coils, and the two types of the antenna coils are alternately stacked.Type: GrantFiled: March 28, 2019Date of Patent: January 10, 2023Assignees: TODA KOGYO CORP., SECURITAG ASSEMBLY GROUP CO., LTD.Inventors: Jun Koujima, Mark Chang, Yoshiteru Kouno, Peter Yan
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Publication number: 20230006352Abstract: A module substrate antenna (1) includes a first coil (7) and a second coil (8) that are connected in parallel. The first coil (7) is composed of a pattern in which a spiral first antenna coil pattern (3a) and a spiral second antenna coil pattern (5a) are interlayer-connected in series. The second coil (8) is composed of a pattern in which a spiral third antenna coil pattern (4a) and a spiral fourth antenna coil pattern (6a) are interlayer-connected in series. The coil patterns are arranged in order of the first antenna coil pattern (3a), the third antenna coil pattern (4a), the second antenna coil pattern (5a), and the fourth antenna coil pattern (6a).Type: ApplicationFiled: December 1, 2020Publication date: January 5, 2023Inventor: Jun KOUJIMA
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Patent number: 11228106Abstract: The present invention relates to an electronic component, and also relates to an antenna for information communication using a magnetic field component, which is capable of satisfying both of downsizing and improvement in communication sensitivity. The electronic component of the present invention comprises a ferrite core and a coil, in which a ferrite constituting the ferrite core has a spinel structure and comprises Fe, Ni, Zn, Cu and Co as constitutional metal elements, and when contents of the respective constitutional metal elements in the ferrite are calculated in terms of Fe2O3, NiO, ZnO, CuO and CoO, contents of Fe2O3, NiO, ZnO, CuO and CoO in the ferrite are 46 to 50 mol %, 20 to 27 mol %, 15 to 22 mol %, 9 to 11 mol % and 0.01 to 1.0 mol %, respectively, based on a total content of Fe2O3, NiO, ZnO, CuO and CoO.Type: GrantFiled: January 29, 2018Date of Patent: January 18, 2022Assignee: TODA KOGYO CORPORATIONInventors: Satoshi Nomura, Jun Koujima, Yasushi Nishio, Manato Nakatsukasa, Yasuhiko Fujii
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Publication number: 20190393605Abstract: The present invention relates to an electronic component, and also relates to an antenna for information communication using a magnetic field component, which is capable of satisfying both of downsizing and improvement in communication sensitivity. The electronic component of the present invention comprises a ferrite core and a coil, in which a ferrite constituting the ferrite core has a spinel structure and comprises Fe, Ni, Zn, Cu and Co as constitutional metal elements, and when contents of the respective constitutional metal elements in the ferrite are calculated in terms of Fe2O3, NiO, ZnO, CuO and CoO, contents of Fe2O3, NiO, ZnO, CuO and CoO in the ferrite are 46 to 50 mol %, 20 to 27 mol %, 15 to 22 mol %, 9 to 11 mol % and 0.01 to 1.0 mol %, respectively, based on a total content of Fe2O3, NiO, ZnO, CuO and CoO.Type: ApplicationFiled: January 29, 2018Publication date: December 26, 2019Inventors: Satoshi NOMURA, Jun KOUJIMA, Yasushi NISHIO, Manato NAKATSUKASA, Yasuhiko FUJII
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Publication number: 20190304662Abstract: A module substrate antenna includes: a laminate in which a plurality of ferrite layers are stacked; antennal coils provided on surfaces of the respective ferrite layers; a connection pad connected to an external circuit; and a lead wire provided between the laminate and the connection pad. In the laminate, the antenna coils are two types of the antenna coils, and the two types of the antenna coils are alternately stacked.Type: ApplicationFiled: March 28, 2019Publication date: October 3, 2019Inventors: Jun KOUJIMA, Mark CHANG, Yoshiteru KOUNO, Peter Yan
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Patent number: 10027017Abstract: The present invention relates to an RF tag comprising a magnetic antenna for transmitting and receiving information using an electromagnetic induction method, and an IC mounted to the magnetic antenna, wherein the magnetic antenna comprises a magnetic core and a plurality of coils formed on the magnetic core; the coils each have an inductance L1 satisfying the specific relational formula, and are connected in parallel to each other in an electric circuit and disposed in series on the magnetic core; and a combined inductance L0 of the magnetic antenna satisfies the specific relational formula. The RF tag of the present invention is used as a magnetic antenna for information communication using a magnetic field component which is capable of satisfying both reduction in size and improvement in communication sensitivity.Type: GrantFiled: March 15, 2017Date of Patent: July 17, 2018Assignee: TODA KOGYO CORPORATIONInventors: Jun Koujima, Satoshi Ohmae, Tetsuya Kimura, Yoshiro Sato
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Publication number: 20170187092Abstract: The present invention relates to an RF tag comprising a magnetic antenna for transmitting and receiving information using an electromagnetic induction method, and an IC mounted to the magnetic antenna, wherein the magnetic antenna comprises a magnetic core and a plurality of coils formed on the magnetic core; the coils each have an inductance L1 satisfying the specific relational formula, and are connected in parallel to each other in an electric circuit and disposed in series on the magnetic core; and a combined inductance L0 of the magnetic antenna satisfies the specific relational formula. The RF tag of the present invention is used as a magnetic antenna for information communication using a magnetic field component which is capable of satisfying both reduction in size and improvement in communication sensitivity.Type: ApplicationFiled: March 15, 2017Publication date: June 29, 2017Inventors: Jun KOUJIMA, Satoshi OHMAE, Tetsuya KIMURA, Yoshiro SATO
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Patent number: 9634735Abstract: The present invention relates to an RF tag comprising a magnetic antenna for transmitting and receiving information using an electromagnetic induction method, and an IC mounted to the magnetic antenna, wherein the magnetic antenna comprises a magnetic core and a plurality of coils formed on the magnetic core; the coils each have an inductance L1 satisfying the specific relational formula, and are connected in parallel to each other in an electric circuit and disposed in series on the magnetic core; and a combined inductance L0 of the magnetic antenna satisfies the specific relational formula. The RF tag of the present invention is used as a magnetic antenna for information communication using a magnetic field component which is capable of satisfying both reduction in size and improvement in communication sensitivity.Type: GrantFiled: January 28, 2010Date of Patent: April 25, 2017Assignee: TODA KOGYO CORPORATIONInventors: Jun Koujima, Satoshi Ohmae, Tetsuya Kimura, Yoshiro Sato
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Patent number: 9397401Abstract: The present invention relates to a magnetic antenna for information communication using a magnetic field component which is capable of satisfying both reduction in size and improvement in communication sensitivity. The magnetic antenna of the present invention is used for transmitting and receiving information using an electromagnetic induction method, and comprises a central core formed of a magnetic material and a non-magnetic material, a coil-shaped electrode material wound around the core, and an insulating layer formed on at least one outside surface of the core on which the coil-shaped electrode material is provided, in which the magnetic material is separated into two or more parts through the non-magnetic material when viewed in a section of the core which is perpendicular to a magnetic flux passing therethrough.Type: GrantFiled: April 22, 2009Date of Patent: July 19, 2016Assignee: TODA KOGYO CORPORATIONInventors: Jun Koujima, Tetsuya Kimura, Takanori Doi, Yoshiro Sato
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Patent number: 9311590Abstract: The present invention relates to a magnetic antenna for information communication using a magnetic field component which is a magnetic antenna or an RF tag capable of satisfying both reduction in size and improvement in communication sensitivity. More specifically, the present invention relates to an RF tag comprising a magnetic antenna for transmitting and receiving information using an electromagnetic induction method, and an IC mounted to the magnetic antenna, said magnetic antenna comprising a magnetic core and a plurality of coils formed on the magnetic core in which the coils each have an inductance L1 satisfying the specific relational formula, and are formed with bank winding when the coils are lap-wound so as to prevent increase in parasitic capacitance thereof, connected in parallel to each other in an electric circuit, and disposed in series on the magnetic core; and a combined inductance L0 of the magnetic antenna satisfies the specific relational formula.Type: GrantFiled: July 28, 2011Date of Patent: April 12, 2016Assignee: TODA KOGYO CORPORATIONInventors: Jun Koujima, Satoshi Ohmae, Yoshiro Sato
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Patent number: 9218559Abstract: The present invention relates to a composite RF tag for transmitting and receiving information using an electromagnetic induction method, comprising a magnetic antenna mounted with an IC, and a resin layer formed around the magnetic antenna, wherein the magnetic antenna comprises a central core formed of a magnetic material and a coil-shaped electrode material disposed around the core. The RF tag according to the present invention comprises the magnetic antenna surrounded by the resin, and therefore can provide a composite magnetic RF tag which can minimize adverse influence by surrounding water or metals in view of maintenance of tools or parts to which the composite RF tag is mounted, and is free from occurrence of any failure or cracking.Type: GrantFiled: May 8, 2014Date of Patent: December 22, 2015Assignee: TODA KOGYO CORPORATIONInventors: Jun Koujima, Takanori Doi, Tetsuya Kimura, Yoshiro Sato
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Publication number: 20140239075Abstract: The present invention relates to a composite RF tag for transmitting and receiving information using an electromagnetic induction method, comprising a magnetic antenna mounted with an IC, and a resin layer formed around the magnetic antenna, wherein the magnetic antenna comprises a central core formed of a magnetic material and a coil-shaped electrode material disposed around the core. The RF tag according to the present invention comprises the magnetic antenna surrounded by the resin, and therefore can provide a composite magnetic RF tag which can minimize adverse influence by surrounding water or metals in view of maintenance of tools or parts to which the composite RF tag is mounted, and is free from occurrence of any failure or cracking.Type: ApplicationFiled: May 8, 2014Publication date: August 28, 2014Applicant: TODA KOGYO CORPORATIONInventors: Jun KOUJIMA, Takanori DOI, Tetsuya KIMURA
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Patent number: 8720787Abstract: The present invention relates to a composite RF tag for transmitting and receiving information using an electromagnetic induction method, comprising a magnetic antenna mounted with an IC, and a resin layer formed around the magnetic antenna, wherein the magnetic antenna comprises a central core formed of a magnetic material and a coil-shaped electrode material disposed around the core. The RF tag according to the present invention comprises the magnetic antenna surrounded by the resin, and therefore can provide a composite magnetic RF tag which can minimize adverse influence by surrounding water or metals in view of maintenance of tools or parts to which the composite RF tag is mounted, and is free from occurrence of any failure or cracking.Type: GrantFiled: March 25, 2010Date of Patent: May 13, 2014Assignee: Toda Kogyo CorporationInventors: Jun Koujima, Takanori Doi, Tetsuya Kimura, Yoshiro Sato
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Publication number: 20130206845Abstract: The present invention relates to a magnetic antenna for information communication using a magnetic field component which is a magnetic antenna or an RF tag capable of satisfying both reduction in size and improvement in communication sensitivity. More specifically, the present invention relates to an RF tag comprising a magnetic antenna for transmitting and receiving information using an electromagnetic induction method, and an IC mounted to the magnetic antenna, said magnetic antenna comprising a magnetic core and a plurality of coils formed on the magnetic core in which the coils each have an inductance L1 satisfying the specific relational formula, and are formed with bank winding when the coils are lap-wound so as to prevent increase in parasitic capacitance thereof, connected in parallel to each other in an electric circuit, and disposed in series on the magnetic core; and a combined inductance L0 of the magnetic antenna satisfies the specific relational formula.Type: ApplicationFiled: July 28, 2011Publication date: August 15, 2013Applicant: Toda KogyoInventors: Jun Koujima, Satoshi Ohmae, Yoshiro Sato
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Patent number: 8479999Abstract: A composite magnetic antenna for information communication utilizes a magnetic field component as well as a composite RF tag using the composite magnetic antenna, which can be embedded in metals while maintaining a sufficient communication sensitivity unlike conventional RF tags which are unusable in the metal embedding applications. The composite RF tag for transmitting and receiving information using an electromagnetic induction method includes a magnetic antenna on which an IC is mounted, and an insulating material and a metal material or a conductive material which are formed around the magnetic antenna. The magnetic antenna includes a central core formed of a magnetic material, and an electrode material formed into a coil around the central core. The insulating material is formed around the magnetic antenna except for one longitudinal end of the coil of the magnetic antenna. The metal material or the conductive material is formed on an outside of the insulating material.Type: GrantFiled: May 12, 2009Date of Patent: July 9, 2013Assignee: Toda Kogyo CorporationInventors: Jun Koujima, Tetsuya Kimura, Takanori Doi, Yoshiro Sato
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Publication number: 20130020394Abstract: The present invention relates to an RF tag comprising a magnetic antenna for transmitting and receiving information using an electromagnetic induction method, and an IC mounted to the magnetic antenna, wherein the magnetic antenna comprises a magnetic core and a plurality of coils formed on the magnetic core; the coils each have an inductance L1 satisfying the specific relational formula, and are connected in parallel to each other in an electric circuit and disposed in series on the magnetic core; and a combined inductance L0 of the magnetic antenna satisfies the specific relational formula. The RF tag of the present invention is used as a magnetic antenna for information communication using a magnetic field component which is capable of satisfying both reduction in size and improvement in communication sensitivity.Type: ApplicationFiled: January 28, 2010Publication date: January 24, 2013Inventors: Jun Koujima, Satoshi Ohmae, Tetsuya Kimura, Yoshiro Sato
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Patent number: D874463Type: GrantFiled: May 7, 2018Date of Patent: February 4, 2020Assignees: TODA KOGYO CORP., SECURITAG ASSEMBLY GROUP CO., LTD.Inventors: Jun Koujima, Mark Chang, Yoshiteru Kouno, Peter Yan
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Patent number: D890007Type: GrantFiled: September 27, 2019Date of Patent: July 14, 2020Assignees: TODA KOGYO CORP., SECURITAG ASSEMBLY GROUP CO., LTD.Inventors: Jun Koujima, Mark Chang, Yoshiteru Kouno, Peter Yan
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Patent number: D894773Type: GrantFiled: September 27, 2019Date of Patent: September 1, 2020Assignees: TODA KOGYO CORP., SECURITAG ASSEMBLY GROUP CO., LTD.Inventors: Jun Koujima, Mark Chang, Yoshiteru Kouno, Peter Yan