Patents by Inventor Hidenori Katsumura
Hidenori Katsumura 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: 20150303835Abstract: A power-generating device includes a vibration plate, a lower electrode on the vibration plate, a piezoelectric layer made of piezoelectric material on the lower electrode, and an upper electrode on the piezoelectric layer, a fixing member for supporting a fixed end of the vibration plate. The vibration plate applies compressive stress to the piezoelectric layer when the vibration plate does not vibrate. The power generating device is excellent in long-term reliability.Type: ApplicationFiled: October 30, 2013Publication date: October 22, 2015Inventors: HIDENORI KATSUMURA, HIROSHI KAGATA
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Publication number: 20150295520Abstract: A power generator including: a vibration system configured to be attached to a vibrating member; and a power generating element attached to the vibration system. The vibration system is a multiple-degree-of-freedom vibration system that includes a first vibration system having a first mass member elastically supported by a first spring member, and a second vibration system having a second mass member elastically connected to the first mass member by a second spring member. The power generating element is arranged between the first and second mass members, and vibration applied from the vibrating member causes relative displacement of the first and second mass members so that vibration energy of the vibrating member is input to the power generating element. A natural frequency of the first vibration system is different from that of the second vibration system.Type: ApplicationFiled: June 23, 2015Publication date: October 15, 2015Inventors: Koichi HASEGAWA, Hajime KURIKUMA, Atsushi MURAMATSU, Hidenori KATSUMURA, Akihiko NAMBA, Hiroshi KAGATA
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Publication number: 20140327339Abstract: A piezoelectric resonator including a base part, a first support part fixed to the base part, a beam part fixed to the first support part, a weight part fixed to the beam part, a drive unit provided on the beam part, and an adjusting magnet movable on a main surface of the base part. Furthermore, the weight part is formed of a magnet or a magnetic body, and the beam part extends in a direction along the main surface of the base part. With this configuration, displacement of the resonance frequency generated due to variation in a manufacturing process can be adjusted easily. Even when the resonance frequency is displaced from desired resonance frequency due to variation in the manufacturing process of a power generating element, the displacement can be easily adjusted and maximum efficiency can be obtained.Type: ApplicationFiled: February 8, 2013Publication date: November 6, 2014Applicant: PANASONIC CORPORATIONInventors: Hidenori Katsumura, Hiroshi Kagata
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Publication number: 20130285512Abstract: A piezoelectric element includes a metal substrate, an alumina layer, a lower electrode, a piezoelectric layer, and an upper electrode. The metal substrate includes iron as a main component and includes at least aluminum and chromium. The alumina layer is formed on the metal substrate, and the lower electrode is formed on the alumina layer. The piezoelectric layer is formed on the lower electrode, and the upper electrode is formed on the piezoelectric layer. The alumina layer is mainly formed of particles in a ?-alumina phase.Type: ApplicationFiled: February 9, 2012Publication date: October 31, 2013Applicant: PANASONIC CORPORATIONInventors: Hidenori Katsumura, Hiroshi Kagata
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Patent number: 7940155Abstract: A varistor includes a ceramic substrate having an insulating property, a varistor layer provided on the ceramic substrate and mainly containing zinc oxide, a first glass ceramic layer provided on the second surface of the varistor layer, first and second internal electrodes provided in the varistor layer and facing each other. The varistor has a small, thin size, and has sufficient varistor characteristics against surge voltages. The varistor provides a small electronic component module with resistance to static electricity and surge voltages.Type: GrantFiled: March 29, 2006Date of Patent: May 10, 2011Assignee: Panasonic CorporationInventors: Hidenori Katsumura, Tatsuya Inoue, Keiji Kobatashi
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Publication number: 20110026186Abstract: An electrostatic discharge protection component includes an element body, a pair of discharge electrodes, and a pair of terminal electrodes. The element body includes a closed cavity therein. The discharge electrodes are formed in the element body in such a manner as to be exposed to the cavity. The terminal electrodes are connected to the discharge electrodes, respectively, and provided on the element body. There is an oxide of at least one metal selected from zinc, niobium, aluminum, magnesium, calcium, sodium, and potassium attached to the surface of at least one of the discharge electrodes in the cavity.Type: ApplicationFiled: June 5, 2009Publication date: February 3, 2011Applicant: Panasonic CorporationInventors: Hidenori Katsumura, Tatsuya Inoue, Hideaki Tokunaga
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Patent number: 7864025Abstract: There is provided a static electricity countermeasure component including a varistor layer having a plurality of inner electrodes of a planer shape, embedded therein a board including alumina laminated with the varistor layer, and a terminal connected to the inner electrode of the varistor layer and formed at a side face of the varistor layer, in which the varistor layer and the board are sintered to thereby diffuse bismuth oxide of the varistor layer in the board and provide a bismuth oxide diffusing layer at the board. In this way, the static electricity countermeasure component achieving thin-sized formation while maintaining a varistor characteristic against a small surge voltage can be realized.Type: GrantFiled: March 24, 2005Date of Patent: January 4, 2011Assignee: Panasonic CorporationInventors: Hidenori Katsumura, Tatsuya Inoue, Hiroshi Kagata
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Publication number: 20100254052Abstract: An electrostatic discharge (ESD) protector includes a ceramic body having a cavity provided therein, and two discharge electrodes facing each other across the cavity. The discharge electrodes are made of metal containing more than 80 wt. % of tungsten. The discharge electrodes contain not more than 2.0 atomic % of tungsten bonded to oxygen to a total amount of tungsten contained in the discharge electrodes. This ESD protector does not cause a short-circuiting even upon having high-voltage static electricity applied to the discharge electrodes repetitively, thus having high reliability.Type: ApplicationFiled: November 20, 2008Publication date: October 7, 2010Inventors: Hidenori Katsumura, Hideaki Tokunaga, Muneyuki Sawada
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Patent number: 7741949Abstract: A varistor includes a ceramic insulating substrate, a varistor section having an outer surface, and first and second external electrodes provided on the outer surface of the varistor section. The varistor section includes a varistor layer on the ceramic insulating substrate, first and second internal electrodes, and first and second via-conductors embedded in the varistor layer and exposing from the varistor layer. The second internal electrode has a portion facing the first internal electrode. The first internal electrode and the portion of the second internal electrode sandwiches at least a portion of the varistor layer. The first and second via-conductors are connected to the first and second internal electrodes, respectively. The first and second external electrodes are connected to the first and second via-conductors, respectively. This varistor has a small thickness and a large mechanical strength.Type: GrantFiled: March 24, 2006Date of Patent: June 22, 2010Assignee: Panasonic CorporationInventors: Tatsuya Inoue, Hidenori Katsumura, Keiji Kobayashi
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Patent number: 7592886Abstract: A dielectric porcelain composition of the present invention includes a first component and second component. If the first component is represented by the general formula of xBaO-yNd2O3-zTiO2-wBi2O3 (provided that x+y+z+w=100), x, y, z, and w satisfy 12?x?16, 12?y?16, 65?z?69, and 2?w?5, respectively. The second component includes 30 to 37 wt % of BaO, 33 to 46 wt % of SiO2, 8 to 12 wt % of La2O3, 3 to 7 wt % of Al2O3, 0 to 1 wt % of SrO, 0 to 10 wt % of Li2O, 0 to 20 wt % of ZnO, and 7 wt % or less of B203. The compounding ratio of the second component is between 10 wt % and 30 wt % when the sum of the first and second components is 100. In addition, 0.1 to 1 parts by weight of Li2O and 3 to 10 parts by weight of ZnO, relative to 100 parts by weight of the sum of the first and second components, is also contained as a third component. An average particle diameter of the dielectric mixed powder forming dielectric porcelain composition before firing is 0.9 ?m or less.Type: GrantFiled: March 22, 2006Date of Patent: September 22, 2009Assignee: Panasonic CorporationInventors: Ryuichi Saito, Hiroshi Kagata, Hidenori Katsumura, Muneyuki Sawada
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Publication number: 20090230596Abstract: An un-sintered multi-layered body includes a first ceramic layer having a surface, a conductor provided on the surface of the first ceramic layer, an insulator provided on the surface of the first ceramic layer and covering an end of the conductor, and a second ceramic layer provided on the conductor and the insulator. The un-sintered multi-layered body is baked at a temperature at which the first ceramic layer can be sintered but the second ceramic layer cannot be sintered. After the un-sintered multi-layered body is baked, the second ceramic layer is removed, thereby providing a multi-layered ceramic substrate. The insulator has a thickness not smaller than 10 ?m and not larger than 40 ?m. This method makes the insulator dense and allows the conductor to be formed easily.Type: ApplicationFiled: October 31, 2006Publication date: September 17, 2009Inventors: Muneyuki Sawada, Hidenori Katsumura, Hiroshi Kagata
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Publication number: 20090033441Abstract: A dielectric porcelain composition of the present invention includes a first component and second component. If the first component is represented by the general formula of xBaO—yNd2O3-zTiO2-wBi2O3 (provided that x+y+z+w=100), x, y, z, and w satisfy 12?x?16, 12?y?16, 65?z?69, and 2?w?5, respectively. The second component includes 30 to 37 wt % of BaO, 33 to 46 wt % of SiO2, 8 to 12 wt % of La2O3, 3 to 7 wt % of Al2O3, 0 to 1 wt % of SrO, 0 to 10 wt % of Li2O, 0 to 20 wt % of ZnO, and 7 wt % or less of B203. The compounding ratio of the second component is between 10 wt % and 30 wt % when the sum of the first and second components is 100. In addition, 0.1 to 1 parts by weight of Li2O and 3 to 10 parts by weight of ZnO, relative to 100 parts by weight of the sum of the first and second components, is also contained as a third component. An average particle diameter of the dielectric mixed powder forming dielectric porcelain composition before firing is 0.9 ?m or less.Type: ApplicationFiled: March 22, 2006Publication date: February 5, 2009Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Ryuichi Saito, Hiroshi Kagata, Hidenori Katsumura, Muneyuki Sawada
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Publication number: 20090027157Abstract: A varistor includes a ceramic substrate having an insulating property, a varistor layer provided on the ceramic substrate and mainly containing zinc oxide, a first glass ceramic layer provided on the second surface of the varistor layer, first and second internal electrodes provided in the varistor layer and facing each other. The varistor has a small, thin size, and has sufficient varistor characteristics against surge voltages. The varistor provides a small electronic component module with resistance to static electricity and surge voltages.Type: ApplicationFiled: March 29, 2006Publication date: January 29, 2009Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Hidenori Katsumura, Tatsuya Inoue, Keiji Kobatashi
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Publication number: 20080224815Abstract: An electrostatic discharge protection component comprises a ceramic sintered body having ceramic substrate 12, varistor portion 10 formed thereon by avoiding a part of non-forming area 18, and glass ceramic layer 14 formed thereon, a par of terminal electrodes 13a, 13b provided on the surface of glass ceramic layer 14 of the ceramic sintered body, a pair of external electrodes 16a, 16b, and heat conducting portion 15 penetrating through ceramic substrate 12 vertically, and therefore by installing and mounting a light-emitting diode on heat conducting portion 15 in non-forming area 18 of the electrostatic discharge protection component, the size can be reduced, and the heat generated by the mounted component may be released efficiently.Type: ApplicationFiled: March 13, 2008Publication date: September 18, 2008Inventors: Tatsuya INOUE, Hidenori KATSUMURA, Masaaki HAYAMA
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Publication number: 20080225449Abstract: An electrostatic discharge protection component comprising a ceramic sintered body having ceramic substrate 12, varistor portion 10 formed thereon excluding some non-formed portion 18, and glass ceramic layer 14 further formed thereon, a pair of terminal electrodes 13a, 13b disposed by exposing a part thereof at non-formed portion 18 on ceramic substrate 12 of the ceramic sintered body, a pair of external electrodes 16a, 16b, and heat conducting portion 15 vertically penetrating ceramic substrate 12, a light-emitting diode or the like mounted on heat conducting portion 15 at non-formed portion 18, it is possible to reduce the size and to efficiently dissipate the heat generated by the component mounted.Type: ApplicationFiled: March 13, 2008Publication date: September 18, 2008Inventors: Tatsuya INOUE, Hidenori KATSUMURA, Masaaki Hayama
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Publication number: 20080224816Abstract: An electrostatic discharge protection component comprises a ceramic sintered body having ceramic substrate 12, varistor portion 10 formed thereon, and glass ceramic layer 14 formed further thereon, a pair of terminal electrodes 13a, 13b provided on the surface of this ceramic sintered body, a pair of external electrodes 16a, 16b, and heat conducting portion 15 penetrating through the ceramic sintered body vertically, and therefore by mounting the light-emitting diode on heat conducting portion 15 of this electrostatic discharge protection component, the size is reduced, and the heat generated from the component may be released efficiently.Type: ApplicationFiled: March 13, 2008Publication date: September 18, 2008Inventors: Tatsuya INOUE, Hidenori KATSUMURA, Masaaki HAYAMA
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Patent number: 7283032Abstract: It is possible to realize an electrostatic discharge protection component having a very small electrostatic capacity suited to a high-frequency equipment and comprising a ceramic insulating substrate, a varistor unit composed of a varistor layer and an internal electrode, which are sintered and integrated on the ceramic insulating substrate, and at least a pair of external electrodes provided on the varistor unit, the varistor unit being formed with a varistor.Type: GrantFiled: March 10, 2005Date of Patent: October 16, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Tatsuya Inoue, Hidenori Katsumura, Hiroshi Kagata
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Patent number: 7277003Abstract: An electrostatic discharge protection component of an array type includes ceramic insulating substrate 12; varistor region 10 which is pasted on ceramic insulating substrate 12 and then is sintered integrally with ceramic insulating substrate 12; and at least one ground outer electrode 15A and a plurality of input/output outer electrodes 15B. Varistor region 10 includes at least one ground inner electrode 14A, varistor layer 10C and the plurality of input/output outer electrodes 15B so as to form the plurality of varistors. Ground inner electrode 14A is connected with ground outer electrode 15A. This structure enables the protection component to be extremely thin.Type: GrantFiled: April 29, 2005Date of Patent: October 2, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Tatsuya Inoue, Hidenori Katsumura, Hiroshi Kagata
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Publication number: 20070200133Abstract: An LED assembly including a wiring substrate with an opening at its center; a heat sink housed inside the opening; an LED chip mounted on the heat sink; a connecting section for electrically coupling the LED chip and wiring substrate; and a transparent resin covering the LED chip and connecting section. Heat generated from the LED chip is efficiently dissipated, and high productivity is also achievable.Type: ApplicationFiled: March 31, 2006Publication date: August 30, 2007Inventors: Akira Hashimoto, Masaaki Katsumata, Masaaki Hayama, Kenichi Endou, Kenji Endou, Hitoshi Hirano, Hidenori Katsumura, Tatsuya Inoue
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Publication number: 20070171025Abstract: There is provided a static electricity countermeasure component including a varistor layer having a plurality of inner electrodes of a planer shape, embedded therein a board including alumina laminated with the varistor layer, and a terminal connected to the inner electrode of the varistor layer and formed at a side face of the varistor layer, in which the varistor layer and the board are sintered to thereby diffuse bismuth oxide of the varistor layer in the board and provide a bismuth oxide diffusing layer at the board. In this way, the static electricity countermeasure component achieving thin-sized formation while maintaining a varistor characteristic against a small surge voltage can be realized.Type: ApplicationFiled: March 24, 2005Publication date: July 26, 2007Inventors: Hidenori Katsumura, Tatsuya Inoue, Hiroshi Kagata