Patents by Inventor Kazunori Nishimura
Kazunori Nishimura 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: 9631344Abstract: A work vehicle includes an engine, a variable displacement hydraulic pump, a hydraulic motor, an exhaust treatment device, and a controller. The engine drives the variable displacement hydraulic pump. The variable displacement hydraulic pump is configured to change the discharge direction of the hydraulic fluid. Depending on the discharge direction of the hydraulic oil from the variable displacement hydraulic pump, the hydraulic motor is configured to change the driving direction to the forward direction or the reverse direction. The exhaust treatment device is configured to treat the exhaust from the engine. The controller is configured to increase the speed of the engine to a predetermined first speed or greater and to change the discharge direction of the variable displacement hydraulic pump to a neutral state during regeneration of the exhaust treatment device.Type: GrantFiled: October 9, 2015Date of Patent: April 25, 2017Assignee: KOMATSU LTD.Inventor: Kazunori Nishimura
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Publication number: 20170101763Abstract: A work vehicle includes an engine, a variable displacement hydraulic pump, a hydraulic motor, an exhaust treatment device, and a controller. The engine drives the variable displacement hydraulic pump. The variable displacement hydraulic pump is able configured to change the discharge direction of the hydraulic fluid. Depending on the discharge direction of the hydraulic oil from the variable displacement hydraulic pump, the hydraulic motor is configured to change the driving direction to the forward direction or the reverse direction. The exhaust treatment device is configured to treat the exhaust from the engine. The controller is configured to increase the speed of the engine to a predetermined first speed or greater and to change the discharge direction of the variable displacement hydraulic pump to a neutral state during regeneration of the exhaust treatment device.Type: ApplicationFiled: October 9, 2015Publication date: April 13, 2017Inventor: Kazunori NISHIMURA
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Publication number: 20170093373Abstract: A high-frequency filter including first and second signal terminals, a filter circuit having a passband and a stopband and being connected between the first signal terminal and the second signal terminal, and an additional circuit connected in parallel with the filter circuit between the first signal terminal and the second signal terminal. The filter circuit is configured to provide a first output signal responsive to receipt of an input signal. The additional circuit has an attenuation band within the stopband, and is configured to provide a second output signal responsive to receiving the input signal, the first and second output signals having phase components opposite to each other in the attenuation band.Type: ApplicationFiled: December 12, 2016Publication date: March 30, 2017Inventors: Joji Fujiwara, Toru Jibu, Tomoya Komatsu, Hiroyuki Nakamura, Tetsuya Tsurunari, Kazunori Nishimura
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Publication number: 20170025215Abstract: An object of the invention is to provide a method that is for manufacturing a powder magnetic core through simple compression molding and capable of manufacturing a complicatedly shaped powder magnetic core with reliable high strength and insulating properties. The invention is directed to a method for manufacturing a powder magnetic core with a metallic soft magnetic material powder, the method including: a first step including mixing a soft magnetic material powder and a binder; a second step including compression molding the mixture obtained after the first step; a third step including performing at least one of grinding and cutting on the compact obtained after the second step; and a fourth step including heat-treating the compact after the third step, wherein in the fourth step, the compact is heat-treated so that an oxide layer containing an element constituting the soft magnetic material powder is formed on the surface of the soft magnetic material powder.Type: ApplicationFiled: March 12, 2015Publication date: January 26, 2017Applicant: HITACHI METALS, LTD.Inventors: Kazunori NISHIMURA, Shin NOGUCHI, Toshio MIHARA
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Publication number: 20170025214Abstract: A magnetic core includes alloy phases 20 each made of Fe-based soft magnetic alloy grains including M1 (wherein M1 represents both elements of Al and Cr), Si, and R (wherein R represents at least one element selected from the group consisting of Y, Zr, Nb, La, Hf and Ta), and has a structure in which the alloy phases 20 are connected to each other through a grain boundary phase 30. In the grain boundary phase 30, an oxide region is produced. The oxide region includes Fe, M1, Si and R and further includes Al in a larger proportion by mass than the alloy phases 20.Type: ApplicationFiled: March 13, 2015Publication date: January 26, 2017Applicant: Hitachi Metals, Ltd.Inventors: Kazunori NISHIMURA, Toshio MIHARA, Shin NOGUCHI
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Publication number: 20170018343Abstract: A magnetic core has a structure in which alloy phases 20 each including Fe, Al, Cr and Si are dispersed and any adjacent two of the alloy phases 20 are connected to each other through a grain boundary phase 30. In this grain boundary phase 30, an oxide region is produced which includes Fe, Al, Cr and Si, and includes Al in a larger proportion by mass than the alloy phases 20. This magnetic core includes Al in a proportion of 3 to 10% both inclusive by mass, Cr in a proportion of 3 to 10% both inclusive by mass, and Si in a proportion more than 1% and 4% or less by mass provided that the sum of the quantities of Fe, Al, Cr and Si is regarded as being 100% by mass; and includes Fe and inevitable impurities as the balance of the core.Type: ApplicationFiled: March 10, 2015Publication date: January 19, 2017Applicant: HITACHI METALS, LTD.Inventors: Kazunori NISHIMURA, Toshio MIHARA, Shin NOGUCHI
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Patent number: 9518863Abstract: An acoustic wave element includes a piezoelectric substrate, an excitation electrode configured to excite and output a main acoustic wave on the piezoelectric substrate, a receiving electrode configured to receive the main acoustic wave, a propagation path configured to allow the main acoustic wave to propagate along the piezoelectric substrate between the excitation electrode and the receiving electrode, and a sensing portion configured to react to an object substance. The propagation path is configured to allow the main acoustic wave to pass plural times through the sensing portion along the propagation path. This acoustic wave element has high sensitivity to the object substance.Type: GrantFiled: October 1, 2013Date of Patent: December 13, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shigeru Tsuzuki, Kazunori Nishimura, Hiroyuki Nakamura, Tomohiro Iwasaki
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Patent number: 9520857Abstract: An electronic device includes a main circuit connected between an input terminal and an output terminal, and an auxiliary circuit connected in parallel to the main circuit between the input terminal and the output terminal. The main circuit includes a filter having a first passband and a stopband. The auxiliary circuit has a passing characteristic that allows a signal having a frequency in a certain frequency band inside the stopband to pass through the auxiliary circuit. The main circuit is configured to output a main signal in response to an input signal. The auxiliary circuit is configured to output an auxiliary signal in response to the input signal. The main signal and the auxiliary signal contain phase components opposite to each other in the certain frequency band inside the stopband. This electronic device has an attenuation amount in the stopband.Type: GrantFiled: December 15, 2015Date of Patent: December 13, 2016Assignee: SKYWORKS FILTER SOLUTIONS JAPAN CO., LTD.Inventors: Joji Fujiwara, Toru Jibu, Tomoya Komatsu, Hiroyuki Nakamura, Tetsuya Tsurunari, Kazunori Nishimura
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Publication number: 20160336104Abstract: A magnetic core has a structure in which Fe-based soft magnetic alloy particles are connected via a grain boundary. The Fe-based soft magnetic alloy particles contain Al, Cr and Si. An oxide layer containing at least Fe, Al, Cr and Si is formed at the grain boundary that connects the neighboring Fe-based soft magnetic alloy particles. The oxide layer contains an amount of Al larger than that in Fe-based soft magnetic alloy particles, and includes a first region in which the ratio of Al is higher than the ratio of each of Fe, Cr and Si to the sum of Fe, Cr, Al and Si, and a second region in which the ratio of Fe is higher than the ratio of each of Al, Cr and Si to the sum of Fe, Cr, Al and Si. The first region is on the Fe-based soft magnetic alloy particle side.Type: ApplicationFiled: January 14, 2015Publication date: November 17, 2016Applicant: HITACHI METALS, LTD.Inventors: Shin NOGUCHI, Kazunori NISHIMURA, Toshio MIHARA
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Patent number: 9473107Abstract: A multimode elastic wave device includes a pair of reflectors, and a first interdigital transducer (IDT) electrode through a fifth IDT electrode arranged between the pair of reflectors. In this configuration, each of the average of electrode-finger pitches in the first IDT electrode and the average of electrode-finger pitches in the fifth IDT electrode is smaller than both of the average of electrode-finger pitches in the second IDT electrode and the average of electrode-finger pitches in the fourth IDT electrode.Type: GrantFiled: February 5, 2013Date of Patent: October 18, 2016Assignee: SKYWORKS FILTER SOLUTIONS JAPAN CO., LTD.Inventors: Tomoya Komatsu, Joji Fujiwara, Tetsuya Tsurunari, Hiroyuki Nakamura, Kazunori Nishimura
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Publication number: 20160155549Abstract: Provided are: a metal powder core having a configuration suitable for core loss reduction and strength improvement; a coil component employing this; and a fabrication method for metal powder core. The metal powder core is obtained by dispersing Cu powder among soft magnetic material powder comprising pulverized powder of Fe-based soft magnetic alloy and atomized powder of Fe-based soft magnetic alloy and then by performing compaction. The fabrication method for metal powder core includes: a mixing step of mixing together soft magnetic material powder containing thin-leaf shaped pulverized powder of Fe-based soft magnetic alloy and atomized powder of Fe-based soft magnetic alloy, Cu powder, and a binder and thereby obtaining a mixture; a forming step of performing pressure forming on the mixture obtained at the mixing step; and a heat treatment step of annealing a formed article obtained at the forming step.Type: ApplicationFiled: July 17, 2014Publication date: June 2, 2016Inventors: Tetsuro Kato, Shin Noguchi, Kazunori Nishimura
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Patent number: 9322809Abstract: An acoustic wave sensor includes a piezoelectric substrate, a transmitting electrode configured to excite a main acoustic wave propagating through a propagation region of an upper surface of the piezoelectric substrate, a receiving electrode configured to receive the propagated main acoustic wave, a first insulating film provided on the propagation region of the upper surface of the piezoelectric substrate, a second insulating film provided on the upper surface of the piezoelectric substrate to cover the first insulating film, and a reaction section provided on the upper surface of the second insulating film above the propagation region. The reaction section is configured to react with an object. A velocity of a transverse wave propagating through the first insulating film is higher than a velocity of a transverse wave propagating through the second insulating film. The acoustic wave sensor described above has high detection sensitivity.Type: GrantFiled: January 15, 2013Date of Patent: April 26, 2016Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Tomoya Komatsu, Hiroyuki Nakamura, Shigeru Tsuzuki, Tomohiro Iwasaki, Tetsuo Kawasaki, Kazunori Nishimura
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Publication number: 20160105158Abstract: An electronic device includes a main circuit connected between an input terminal and an output terminal, and an auxiliary circuit connected in parallel to the main circuit between the input terminal and the output terminal. The main circuit includes a filter having a first passband and a stopband. The auxiliary circuit has a passing characteristic that allows a signal having a frequency in a certain frequency band inside the stopband to pass through the auxiliary circuit. The main circuit is configured to output a main signal in response to an input signal. The auxiliary circuit is configured to output an auxiliary signal in response to the input signal. The main signal and the auxiliary signal contain phase components opposite to each other in the certain frequency band inside the stopband. This electronic device has an attenuation amount in the stopband.Type: ApplicationFiled: December 15, 2015Publication date: April 14, 2016Inventors: Joji Fujiwara, Toru Jibu, Tomoya Komatsu, Hiroyuki Nakamura, Tetsuya Tsurunari, Kazunori Nishimura
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Patent number: 9294071Abstract: An antenna duplexer includes first and second filters connected to an antenna terminal. The first filter has a passband of a low frequency band. The second filter has a passband of a high frequency band. The second filter is a ladder-type filter including series-arm resonators and parallel-arm resonators. At least one parallel-arm resonator out of the parallel-arm resonators has a main resonance and an auxiliary resonance. Attenuation poles caused by the main resonance and the auxiliary resonance are within the low frequency band. This antenna duplexer has a high attenuation characteristic and a high isolation characteristic while maintaining a low insertion loss.Type: GrantFiled: March 2, 2015Date of Patent: March 22, 2016Assignee: SKYWORKS PANASONIC FILTER SOLUTIONS JAPAN CO., LTD.Inventors: Toru Yamaji, Kazunori Nishimura, Joji Fujiwara, Hiroyuki Nakamura
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Patent number: 9257962Abstract: An elastic wave device includes a piezoelectric substrate, a pair of reflectors disposed on the piezoelectric substrate along the propagation direction of an elastic wave, and first to fifth comb electrode pairs disposed in this order between the pair of reflectors. Ground comb electrodes of adjacent comb electrode pairs are connected by an even number of connection electrode fingers or by an odd number of connection electrode fingers.Type: GrantFiled: October 30, 2012Date of Patent: February 9, 2016Assignee: SKYWORKS PANASONIC FILTER SOLUTIONS JAPAN CO., LTD.Inventors: Satoru Ikeuchi, Kazunori Nishimura
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Patent number: 9246533Abstract: An electronic device includes a main circuit connected between an input terminal and an output terminal, and an auxiliary circuit connected in parallel to the main circuit between the input terminal and the output terminal. The main circuit includes a filter having a first passband and a stopband. The auxiliary circuit has a passing characteristic that allows a signal having a frequency in a certain frequency band inside the stopband to pass through the auxiliary circuit. The main circuit is configured to output a main signal in response to an input signal. The auxiliary circuit is configured to output an auxiliary signal in response to the input signal. The main signal and the auxiliary signal contain phase components opposite to each other in the certain frequency band inside the stopband. This electronic device has an attenuation amount in the stopband.Type: GrantFiled: October 10, 2013Date of Patent: January 26, 2016Assignee: SKYWORKS PANASONIC FILTER SOLUTIONS JAPAN CO., LTD.Inventors: Joji Fujiwara, Toru Jibu, Tomoya Komatsu, Hiroyuki Nakamura, Tetsuya Tsurunari, Kazunori Nishimura
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Publication number: 20150332850Abstract: A method for manufacturing a powder magnetic core using a soft magnetic material powder, wherein the method has: a first step of mixing the soft magnetic material powder with a binder, a second step of subjecting a mixture obtained through the first step to pressure forming, and a third step of subjecting a formed body obtained through the second step to heat treatment. The soft magnetic material powder is an Fe—Cr—Al based alloy powder comprising Fe, Cr and Al. An oxide layer is formed on a surface of the soft magnetic material powder by the heat treatment. The oxide layer has a higher ratio by mass of Al to the sum of Fe, Cr and Al than an alloy phase inside the powder.Type: ApplicationFiled: January 14, 2014Publication date: November 19, 2015Applicant: HITACHI METALS LTD.Inventors: Yoshimasa Nishio, Shin Noguchi, Kazunori Nishimura, Tetsuroh Katoh, Toshio Mihara
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Patent number: 9172350Abstract: An elastic wave device includes a first unbalanced terminal, a second unbalanced terminal, a first balanced terminal, a second balanced terminal, a first filter part, and a second filter part. A phase of an electric signal transmitted from first unbalanced terminal to the first balanced terminal in the first filter part is different from a phase of an electric signal transmitted from the second unbalanced terminal to the first balanced terminal in the second filter part. A phase of an electric signal transmitted from the first unbalanced terminal to the second balanced terminal in the first filter part is different from a phase of an electric signal transmitted from the second unbalanced terminal to the second balanced terminal in the second filter part.Type: GrantFiled: March 7, 2012Date of Patent: October 27, 2015Assignee: SKYWORKS PANASONIC FILTER SOLUTIONS JAPAN CO., LTD.Inventors: Kazunori Nishimura, Satoru Ikeuchi
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Publication number: 20150270473Abstract: An electronic component includes a substrate a functional section provided on the substrate, and a sealing body which is provided on the substrate and seals the functional section. In a temperature region having a lowest temperature that is at least as high as the glass transition temperature of the sealing body, the coefficient of linear expansion of the sealing body is greater than the coefficient of linear expansion of the substrate. In a temperature region having a highest temperature that is lower than the glass transition temperature of the sealing body, the coefficient of linear expansion of the sealing body is less than the coefficient of linear expansion of the substrate. The electronic component exhibits superior reliability even upon prolonged use.Type: ApplicationFiled: July 2, 2013Publication date: September 24, 2015Inventors: Hidenori Uematsu, Tomohiro Fujita, Ichiro Kameyama, Tetsuya Furihata, Fuyuki Abe, Kazunori Nishimura
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Publication number: 20150180450Abstract: An antenna duplexer includes first and second filters connected to an antenna terminal. The first filter has a passband of a low frequency band. The second filter has a passband of a high frequency band. The second filter is a ladder-type filter including series-arm resonators and parallel-arm resonators. At least one parallel-arm resonator out of the parallel-arm resonators has a main resonance and an auxiliary resonance. Attenuation poles caused by the main resonance and the auxiliary resonance are within the low frequency band. This antenna duplexer has a high attenuation characteristic and a high isolation characteristic while maintaining a low insertion loss.Type: ApplicationFiled: March 2, 2015Publication date: June 25, 2015Inventors: Toru Yamaji, Kazunori Nishimura, Joji Fujiwara, Hiroyuki Nakamura