Patents by Inventor Naoyuki Tsukamoto
Naoyuki Tsukamoto 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: 20240088067Abstract: A device which enables protection against an abruptly rising pulse such as an electromagnetic pulse in a compact size at a device level and a semiconductor package in which the device is mounted are provided. The semiconductor package (1, 2, 3) includes a substrate (12, 60, 70), an IC chip (21) arranged on the substrate (12, 60, 70), a plurality of connection parts (30) configured to connect the IC chip (21) to the outside, a plurality of bonding wires (40) configured to connect the IC chip (21) and corresponding ones of the plurality of connection parts (30), and a mechanism configured to bypass surge current applied to any of the plurality of connection parts (30) from the connection parts (30) to a ground potential via a path different from the plurality of bonding wires (40).Type: ApplicationFiled: December 27, 2021Publication date: March 14, 2024Inventors: Syusaku Yamamoto, Yuichiro Kamino, Takatoshi Tojo, Minoru Tsukazaki, Naoyuki Tsukamoto
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Patent number: 9663644Abstract: Provided is a resin material having non-ohmic properties which has favorable characteristics as a varistor and has a high degree of molding freedom and impact resistance. A resin material 10 comprises: an insulating matrix 11 made of a first resin material; an island-form conductive dispersed phase 12 made of a conductive second resin material which is incompatible with the first resin material and is more wettable to a microvaristor 13 described later than the first resin material is, wherein the island-form conductive dispersed phase is dispersed in an island form in the matrix and has a volume ratio of less than 16% in the whole resin material; and a microvaristor 13 comprising ceramic particles having non-ohmic properties, wherein the ceramic particles are dispersed in the matrix 11 and electrically contacted with each other via the island-form conductive dispersed phase 12.Type: GrantFiled: September 22, 2014Date of Patent: May 30, 2017Assignee: OTOWA ELECTRIC CO., LTD.Inventors: Toshihiko Suzuki, Kenta Hiwatari, Naoyuki Tsukamoto, Hideyuki Okinaka
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Publication number: 20160177074Abstract: Provided is a resin material having non-ohmic properties which has favorable characteristics as a varistor and has a high degree of molding freedom and impact resistance. A resin material 10 comprises: an insulating matrix 11 made of a first resin material; an island-form conductive dispersed phase 12 made of a conductive second resin material which is incompatible with the first resin material and is more wettable to a microvaristor 13 described later than the first resin material is, wherein the island-form conductive dispersed phase is dispersed in an island form in the matrix and has a volume ratio of less than 16% in the whole resin material; and a microvaristor 13 comprising ceramic particles having non-ohmic properties, wherein the ceramic particles are dispersed in the matrix 11 and electrically contacted with each other via the island-form conductive dispersed phase 12.Type: ApplicationFiled: September 22, 2014Publication date: June 23, 2016Inventors: Toshihiko Suzuki, Kenta Hiwatari, Naoyuki Tsukamoto, Hideyuki Okinaka
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Patent number: 9007167Abstract: Provided is a non-linear resistive element which improves the degree of freedom of design of its mounting space. A ceramic sheet 10 which constitutes the non-linear resistive element is configured by a plurality of ceramic pieces 11 being consolidated in a plate like form by an insulating resin 12. One or a plurality of ceramic pieces 11 configure each of a plurality of conductive paths which penetrate the ceramic sheet 10 in a thickness direction thereof, and the ceramic pieces 11 which configure both ends of the conductive paths partially projects from the insulating resin 12.Type: GrantFiled: March 28, 2013Date of Patent: April 14, 2015Assignee: Otowa Electric Co., Ltd.Inventors: Shinsuke Takenaka, Toshihiko Suzuki, Naoyuki Tsukamoto
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Patent number: 8902039Abstract: Provided is a non-linear resistive element which enables to narrow an interval between a plurality of electrodes. A ceramic sheet (2) which constitutes the non-linear resistive element is configured by being supported in a sheet like form by a support member (22) composed of an insulating material. A plurality of ceramic pieces (21) are sectioned and arranged in each of a plurality of unit areas (23) which are apart from each other.Type: GrantFiled: March 28, 2013Date of Patent: December 2, 2014Assignee: Otowa Electric Co., Ltd.Inventors: Toshihiko Suzuki, Yoshimasa Tsujimoto, Naoyuki Tsukamoto
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Patent number: 8896409Abstract: Provided is a technique to secure compositional or microstructural uniformity of a ceramic sintered body while increasing the area of the ceramic sintered boy, thus improving basic performance including non-linearity, maximum withstand energy and aging characteristics. A plurality of small varistor pieces 11 and insulating resin are kneaded and extruded for shaping, whereby a sheet-form varistor layer 13 can be formed where a plurality of small varistor pieces 11 are spaced from one another and are aligned on the same plane, and the adjacent small varistor pieces 11 are bonded via insulating resin.Type: GrantFiled: October 5, 2011Date of Patent: November 25, 2014Assignee: Otowa Electric Co., Ltd.Inventors: Hideyuki Okinaka, Naoyuki Tsukamoto, Toshihiko Suzuki, Hiroyuki Otsuki
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Publication number: 20140125449Abstract: Provided is a non-linear resistive element which improves the degree of freedom of design of its mounting space. A ceramic sheet 10 which constitutes the non-linear resistive element is configured by a plurality of ceramic pieces 11 being consolidated in a plate like form by an insulating resin 12. One or a plurality of ceramic pieces 11 configure each of a plurality of conductive paths which penetrate the ceramic sheet 10 in a thickness direction thereof, and the ceramic pieces 11 which configure both ends of the conductive paths partially projects from the insulating resin 12.Type: ApplicationFiled: March 28, 2013Publication date: May 8, 2014Inventors: Shinsuke Takenaka, Toshihiko Suzuki, Naoyuki Tsukamoto
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Publication number: 20140085043Abstract: Provided is a non-linear resistive element which enables to narrow an interval between a plurality of electrodes. A ceramic sheet (2) which constitutes the non-linear resistive element is configured by being supported in a sheet like form by a support member (22) composed of an insulating material. A plurality of ceramic pieces (21) are sectioned and arranged in each of a plurality of unit areas (23) which are apart from each other.Type: ApplicationFiled: March 28, 2013Publication date: March 27, 2014Applicant: OTOWA ELECTRIC CO., LTDInventors: Toshihiko Suzuki, Yoshimasa Tsujimoto, Naoyuki Tsukamoto
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Publication number: 20130169405Abstract: Provided is a technique to secure compositional or microstructural uniformity of a ceramic sintered body while increasing the area of the ceramic sintered boy, thus improving basic performance including non-linearity, maximum withstand energy and aging characteristics. A plurality of small varistor pieces 11 and insulating resin are kneaded and extruded for shaping, whereby a sheet-form varistor layer 13 can be formed where a plurality of small varistor pieces 11 are spaced from one another and are aligned on the same plane, and the adjacent small varistor pieces 11 are bonded via insulating resin.Type: ApplicationFiled: October 5, 2011Publication date: July 4, 2013Applicant: OTOWA ELECTRIC CO., LTD.Inventors: Hideyuki Okinaka, Naoyuki Tsukamoto, Toshihiko Suzuki, Hiroyuki Otsuki
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Patent number: 7656063Abstract: A rotor is accommodated in a yoke housing. Six magnets are arranged at equal intervals in the circumferential direction on the inner circumferential surface of the yoke housing so as to face the rotor. The core is generally cylindrical and includes an annular portion at an anti-output side and a balance at an output side. The magnets have six poles so as to effectively narrow a basal path width of the core in which the line of magnetic force concentrates most and magnetic saturation is likely to occur most. This reduces the diameter of the core. Therefore, the motor is effectively miniaturized in the axial direction and in the radial direction without complicating the formation steps.Type: GrantFiled: January 13, 2006Date of Patent: February 2, 2010Assignee: ASMO Co., Ltd.Inventor: Naoyuki Tsukamoto
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Patent number: 7332843Abstract: A pump apparatus includes a motor unit and a pump unit. The motor unit includes a cylindrical yoke housing and a rotor accommodated in the yoke housing. A rotary shaft of the rotor is supported by a first bearing and a second bearing. In a direction from a bottom wall of the yoke housing toward an opening of the yoke housing, the first bearing, an armature, a commutator, and a second bearing are arranged in this order on the rotary shaft. A base plate is attached to the opening of the yoke housing. The base plate has a through hole for receiving the second bearing. The commutator has an outer diameter greater than the inner diameter of the through hole. A disc spring is located between the bottom wall and the first bearing. The disc spring urges the rotor in a direction from the bottom wall toward the opening.Type: GrantFiled: October 14, 2005Date of Patent: February 19, 2008Assignee: ASMO Co., Ltd.Inventor: Naoyuki Tsukamoto
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Publication number: 20060290230Abstract: A rotor is accommodated in a yoke housing. Six magnets are arranged at equal intervals in the circumferential direction on the inner circumferential surface of the yoke housing so as to face the rotor. The core is generally cylindrical and includes an annular portion at an anti-output side and a balance at an output side. The magnets have six poles so as to effectively narrow a basal path width of the core in which the line of magnetic force concentrates most and magnetic saturation is likely to occur most. This reduces the diameter of the core. Therefore, the motor is effectively miniaturized in the axial direction and in the radial direction without complicating the formation steps.Type: ApplicationFiled: January 13, 2006Publication date: December 28, 2006Inventor: Naoyuki Tsukamoto
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Publication number: 20060082234Abstract: A pump apparatus includes a motor unit and a pump unit. The motor unit includes a cylindrical yoke housing and a rotor accommodated in the yoke housing. A rotary shaft of the rotor is supported by a first bearing and a second bearing. In a direction from a bottom wall of the yoke housing toward an opening of the yoke housing, the first bearing, an armature, a commutator, and a second bearing are arranged in this order on the rotary shaft. A base plate is attached to the opening of the yoke housing. The base plate has a through hole for receiving the second bearing. The commutator has an outer diameter greater than the inner diameter of the through hole. A disc spring is located between the bottom wall and the first bearing. The disc spring urges the rotor in a direction from the bottom wall toward the opening.Type: ApplicationFiled: October 14, 2005Publication date: April 20, 2006Inventor: Naoyuki Tsukamoto