Patents by Inventor Yasuhiko Nakagawa
Yasuhiko Nakagawa 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: 20240096876Abstract: According to one embodiment, a semiconductor device includes a plurality of transistors. The transistors are coupled through serial coupling. The transistors include a first transistor and a second transistor. The semiconductor device further includes a third transistor and a first diode. The second transistor includes a first sub-transistor and a second sub-transistor that are coupled in parallel with each other. The first transistor, the first sub-transistor, the second sub-transistor, the third transistor, and the first diode are arranged on a substrate, with the third transistor interposed between the first sub-transistor and the second sub-transistor in a first direction.Type: ApplicationFiled: March 6, 2023Publication date: March 21, 2024Inventors: Takahiro NAKAGAWA, Kazuya NISHIHORI, Yasuhiko KURIYAMA
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Patent number: 10540169Abstract: An electronic device including a first microcomputer, a second microcomputer, and communication part configured to communicate with an external device is provided. The first microcomputer has a first storage configured to store a first program, and a first controller configured to execute a first process by using the first program stored in the first storage. The second microcomputer has a second storage configured to store a second program, and a second controller configured to execute a second process by using the second program stored in the second storage. The second controller of the second microcomputer acquires, from the external device, difference data for updating the first program stored in the first storage of the first microcomputer by using the communication part, and updates the first program stored in the first storage of the first microcomputer by using the acquired difference data and the second program stored in the second storage.Type: GrantFiled: June 18, 2018Date of Patent: January 21, 2020Assignee: CLARION CO., LTD.Inventors: Yasuhiko Nakagawa, Kazuya Takahashi, Mitsuya Kato, Hisanori Kawakita, Nozomi Toyozaki, Kazunori Tsunashima
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Publication number: 20180365002Abstract: An electronic device including a first microcomputer, a second microcomputer, and communication part configured to communicate with an external device is provided. The first microcomputer has a first storage configured to store a first program, and a first controller configured to execute a first process by using the first program stored in the first storage. The second microcomputer has a second storage configured to store a second program, and a second controller configured to execute a second process by using the second program stored in the second storage. The second controller of the second microcomputer acquires, from the external device, difference data for updating the first program stored in the first storage of the first microcomputer by using the communication part, and updates the first program stored in the first storage of the first microcomputer by using the acquired difference data and the second program stored in the second storage.Type: ApplicationFiled: June 18, 2018Publication date: December 20, 2018Applicant: Clarion Co., Ltd.Inventors: Yasuhiko NAKAGAWA, Kazuya TAKAHASHI, Mitsuya KATO, Hisanori KAWAKITA, Nozomi TOYOZAKI, Kazunori TSUNASHIMA
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Patent number: 9860981Abstract: Provided is a transparent conductive film having multilayer structure, and inconspicuous pattern shape and good visibility. The film includes: transparent base 11 formed of film-like polymer resin; first hard coat layer 12 laminated on the base 11; first transparent dielectric layer 13 laminated as required on the layer 12; and first transparent conductive layer 14 laminated on the layer 13. The base 11 has a film thickness of 2 to 250 micrometers. The layer 12 is formed of hardening resin containing inorganic oxide, with refractive index: 1.40 to 1.90 and film thickness: 0.5 to 6 micrometers. The layer 13 is formed of inorganic substance, with refractive index: 1.30 to 1.50 and film thickness: 10 to 50 nanometers. The layer 14 is formed of at least one kind of inorganic oxide, metal and carbon, and patterned, and has a film thickness of 10 nanometers to 2 micrometers.Type: GrantFiled: July 5, 2011Date of Patent: January 2, 2018Assignee: JNC CORPORATIONInventors: Takuro Tanaka, Yasuhiko Nakagawa, Hiroyuki Iizuka, Koji Ohguma, Mikio Yamahiro
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Publication number: 20130113757Abstract: Provided is a transparent conductive film having multilayer structure, and inconspicuous pattern shape and good visibility. The film includes: transparent base 11 formed of film-like polymer resin; first hard coat layer 12 laminated on the base 11; first transparent dielectric layer 13 laminated as required on the layer 12; and first transparent conductive layer 14 laminated on the layer 13. The base 11 has a film thickness of 2 to 250 micrometers. The layer 12 is formed of hardening resin containing inorganic oxide, with refractive index: 1.40 to 1.90 and film thickness: 0.5 to 6 micrometers. The layer 13 is formed of inorganic substance, with refractive index: 1.30 to 1.50 and film thickness: 10 to 50 nanometers. The layer 14 is formed of at least one kind of inorganic oxide, metal and carbon, and patterned, and has a film thickness of 10 nanometers to 2 micrometers.Type: ApplicationFiled: July 5, 2011Publication date: May 9, 2013Applicant: JNC CORPORATIONInventors: Takuro Tanaka, Yasuhiko Nakagawa, Hiroyuki Iizuka, Koji Ohguma, Mikio Yamahiro
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Patent number: 8008838Abstract: Provided is a device of a high-frequency resonator using Lamb wave type elastic wave having excellent frequency temperature characteristics, the device having a significantly small frequency change, and including an interdigital transducer for generating at least one Lamb wave type elastic wave, or the interdigital transducer and a reflector, arranged on a quartz substrate. The cut angle of the quartz substrate and a propagation direction of the Lamb wave type elastic wave expressed in Euler angles (?, ?, ?) satisfy any one of following expressions (Expressions 1 to 3): ?=90°, ?=17° to 21° or ?=159° to 163°, ?=0° to 10°??(Expression 1) ?=210°, ?=17° to 21° or ?=159° to 163°, ?=0° to 10°??(Expression 2) ?=330°, ?=17° to 21° or ?=159° to 163°, ?=0° to 10°.Type: GrantFiled: March 14, 2008Date of Patent: August 30, 2011Assignee: University of YamanashiInventor: Yasuhiko Nakagawa
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Publication number: 20100102668Abstract: Provided is a device of a high-frequency resonator using Lamb wave type elastic wave having excellent frequency temperature characteristics, the device having a significantly small frequency change. The Lamb wave type elastic wave device has an interdigital transducer for generating at least one Lamb wave type elastic wave, or the interdigital transducer and a reflector, arranged on a quartz substrate. The cut angle of the quartz substrate and a propagation direction of the Lamb wave type elastic wave expressed in Euler angles (?, ?, ?) satisfy any one of following expressions (Expressions 1 to 3).Type: ApplicationFiled: March 14, 2008Publication date: April 29, 2010Inventor: Yasuhiko Nakagawa
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Patent number: 6437048Abstract: A plastic molded product of olefin (co)polymer composition comprises 0.01-5.0 weight parts high molecular weight polyethylene with an intrinsic viscosity &eegr;E in the range of 15-100 dl/g measured in 135° C. tetralin and preferably 100 weight parts polypropylene. The high molecular weight polyethylene has an average particle size in the range of 1-5000 nm and is finely dispersed as fine granules in the polypropylene, so that high melt strength and high crystallization temperature are attained, enabling various molding methods to be performed with high speed productivity. Using the polymer composition, plastics such as a resin foam, a film, a sheet, a layered plastic article with a coated substrate surface, a hollow plastic article, an injection molded plastic article, a fiber, a nonwoven web or a continuous tube-shaped plastic are provided. The olefin (co)polymer composition is obtained by preparing high molecular weight polyethylene granules using e.g.Type: GrantFiled: July 7, 1998Date of Patent: August 20, 2002Assignee: Chisso CorporationInventors: Jun Saito, Hideo Nobuhara, Shingo Kikukawa, Hitoshi Sato, Akira Yamauchi, Kazuhiro Kimura, Tadashi Tanaka, Yoichi Kugimiya, Yoshitaka Morimoto, Hiroaki Ito, Tooru Fukazawa, Hiroyuki Maehara, Yasuhiro Shiraishi, Yuichi Yamanaka, Masataka Sugimoto, Hirohisa Ishii, Masahiko Taniguchi, Toshiki Yamamoto, Yasuhiko Nakagawa, Junichiro Yokota, Shouji Kawano
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Patent number: 6300415Abstract: A polypropylene composition for the production of various molded articles which are excellent in moldability, mold shrinkage factor on molding, rigidity, flexibility, impact resistance, in particular low-temperature impact resistance, transparency, gloss, stress-whitening resistance, and the balance thereof; various molded articles having the above properties; a propylene composition which is suitable for a base resin for the polypropylene composition; and a process for the production thereof. The propylene composition comprises a propylene homopolymer and a propylene-ethylene copolymer, the intrinsic viscosity of the copolymer ([&eegr;]RC) is in the range of 1.7 to 2.8 dl/g, the intrinsic viscosity ratio of the homopolymer to the copolymer ([&eegr;]RC/[&eegr;]pp) is in the range of 0.7 to 1.Type: GrantFiled: August 14, 1998Date of Patent: October 9, 2001Assignee: Chisso CorporationInventors: Chikashi Okayama, Takanori Nakashima, Masami Kimura, Mayumi Wakata, Kazuhiro Kimura, Toshiki Yamamoto, Hirohisa Ishii, Masataka Sugimoto, Kunio Gouda, Yasuhiro Mochizuki, Noriaki Saito, Junichiro Yokota, Shouji Kawano, Yasuhiko Nakagawa
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Patent number: 5574414Abstract: A ladder type piezoelectric filter of the present invention is made usable in high frequency ranges by employing a piezoelectric resonator having the second harmonic wave mode SM. A series resonator and a parallel resonator of the ladder type piezoelectric filter of the present invention are so arranged that center electrode regions and outer electrode regions are mutually polarized along opposite directions, and the center electrode regions are connected to the outer electrode regions, respectively.Type: GrantFiled: February 17, 1995Date of Patent: November 12, 1996Assignee: NGK Spark Plug Co., Ltd.Inventors: Tatsuo Ogawa, Yasuhiko Nakagawa
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Patent number: 5572173Abstract: There is provided a ladder type electric filter having a pair of vertically arranged parallel resonators and a pair of series resonators arranged side by side above the parallel resonators and, at the same time, held free from degradation in the performance of the filter, wherein the abutting surfaces of the raised connecting sections of a connecting terminal member that are held in close contact with the respective lower surface-electrodes of the series resonators partly overlap with the abutting surface of the raised connecting section of an output terminal member that is held in close contact with the upper surface-electrode of the upper parallel resonator if viewed from above.Type: GrantFiled: February 14, 1995Date of Patent: November 5, 1996Assignee: NGK Spark Plug Co., Ltd.Inventors: Tatsuo Ogawa, Yasuhiko Nakagawa, Junji Kawai
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Patent number: 5392012Abstract: A piezoelectric filter device having one or more pairs of piezoelectric resonators for forming a ladder-type filter circuit, a plurality of terminal plates including an input and output terminal plates for electro-mechanically holding respective resonators at oscillation nodes, and a casing for containing the piezoelectric resonators and the terminal plates and having an opening which is closed by an insulating filler, in which the opening has an inner peripheral rough surface with which the insulating filler is securly bonded. The casing has a connecting extention extending from the bottom wall thereof which is longer than cranked or bent connecting legs of the input and output terminal plates. Alternatively, each cranked or bent connecting leg has a width larger than that of its tip portion to be connected to a printed-circuit board.Type: GrantFiled: September 15, 1992Date of Patent: February 21, 1995Assignee: NGK Spark Plug Co., Ltd.Inventors: Tatsuo Iwata, Tatsuo Ogawa, Yasuhiko Nakagawa
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Patent number: 5294862Abstract: In radio communication equipment, a ladder-type piezo-electric filter is provided which operates in a high-frequency region of approximately 1.7 MHz-2 MHz. The filter is smaller than conventional ladder-type electric filters, less costly, and more easily handled and produced. In accordance with the present invention, rectangular piezo-resonators that longitudinally generate harmonic oscillation are used in the series and parallel branches of a ladder-type circuit. In each resonator, piezo-electric regions are formed by dividing surface electrodes with isolating slits. The slits are formed at the positions corresponding to the node points of the harmonic oscillation waveforms. For the piezo-resonators placed in the series branches of the ladder-type circuit, the piezo-electric regions are polarized in the same transverse direction. In each piezo-resonator used in a parallel branch, the piezo-electric regions are polarized in alternately opposite transverse directions.Type: GrantFiled: July 16, 1992Date of Patent: March 15, 1994Assignee: NGK Spark Plug Co., Ltd.Inventors: Hisao Banno, Yasuhiko Nakagawa
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Patent number: 5168253Abstract: A ladder type piezo-electric filter comprising series piezo-electric resonators and parallel piezo-electric resonators having improved second harmonic mode, high resonance response and anti-resonance impedance near 1-7 MHz, for use in communication applications requiring filter shaving resonator dimensions less than 5 mm and operating frequencies in excess of 455 kHz.Type: GrantFiled: May 21, 1991Date of Patent: December 1, 1992Assignee: NGK Spark Plug Co., Ltd.Inventors: Yasuhiko Nakagawa, Hisao Banno
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Patent number: 5094924Abstract: A polyester resin film laminated steel sheet for a drawn and ironed can which comprises laminating a copolyester resin film prepared by processing according to a known method on the one side of a steel sheet covered with at least hydrated chromium oxide to be employed for the inside of the drawn and ironed can and plating tin on the other side of the steel sheet to be employed for the outside of the drawn and ironed can.By using this polyester resin film laminated steel sheet, a drawn and ironed can having an excellent corrosion resistance with respect to the packed contents such as carbonated beverages and fruit juices is easily produced. Furthermore, this drawn and ironed can can be used without an inner lacquer coating after forming.Type: GrantFiled: June 1, 1990Date of Patent: March 10, 1992Inventors: Kenzo Matsui, Yasuhiko Nakagawa, Atsuo Tanaka, Tsuneo Inui
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Patent number: 4944256Abstract: The first of a pair scissor like rocker arms is pivotally mounted at one end either by way of an adjust screw or a hydraulic lash adjuster and arangement to engage the top of a valve stem at the other. A cam follower which is located between the first and second ends engages a lift cam. The second of the rocker arms is pivotally mounted on the first one and has a closure cam follower at one end and engages the lower face of a retainer which secured to the top of the valve stem by way of a ring type collet. The shaft on which the second rocker arm is pivotally mounted can be provided with eccentric portions which enable the second rocker arm valve clearances to be adjusted separately from the adjustment of the first rocker arm clearance. The arrangement can be adapted to lift and close two valves.Type: GrantFiled: August 15, 1989Date of Patent: July 31, 1990Assignee: Nissan Motor Company, Ltd.Inventors: Yutaka Matayoshi, Yasuhiko Nakagawa, Kyugo Hamai, Shigeru Kamegaya
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Patent number: 4864259Abstract: A ladder-type electric filter circuit apparatus having a plurality of thinner electric filter units wherein each electric filter unit includes a casing of metal into which piezoelectric resonator elements and terminal plates are inserted, and the metal casing is securely mounted on a printed circuit board by soldering. The piezoelectric resonator elements and terminal plates are insulated from the metal casing by an insulating plate and an elastic insulatiang plate which is also served as a vibration or shock absorber for protecting the contained filter from any external vibration or shock propagated through the printed circuit board.Type: GrantFiled: November 23, 1988Date of Patent: September 5, 1989Assignees: NGK Spark Plug Co., Ltd., NEC CorporationInventors: Kenji Takamoro, Kenji Mizoe, Tatsuo Ogawa, Yasuhiko Nakagawa
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Patent number: 4651046Abstract: A piezoelectric scanning device comprises X-direction and Y-direction piezoelectric drive sections coupled to mutually perpendicular Z-direction piezoelectric clamping members. The selective application of voltages to the piezoelectric elements included in the X-direction and Y-direction drive sections and the Z-direction clamping members enables movement of the scanning device in two directions.Type: GrantFiled: October 11, 1985Date of Patent: March 17, 1987Assignee: NGK Spark Plug Co., Ltd.Inventors: Kanji Ohya, Naomasa Wakita, Yasuhiko Nakagawa
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Patent number: 4601957Abstract: A method for producing a thin tin and nickel plated steel sheet having a surface structure in which the distribution of numerous nodules of metallic tin are observed by using an electron microscope on an iron-tin-nickel alloy layer formed on a steel sheet which comprises electroplating nickel on the steel sheet which is anodically treated in an alkaline electrolyte with a pH of above 10 followed by electrotinplating the nickel plated steel sheet, reflowing, quenching, and then chromate treating the tin and nickel plated steel sheet.This tin and nickel plated steel sheet is suitable for welded can materials since it is excellent in corrosion resistance after lacquering and weldability.Type: GrantFiled: August 29, 1985Date of Patent: July 22, 1986Assignee: Toyo Kohan Co., Ltd.Inventors: Terunori Fujimoto, Yasuhiko Nakagawa, Toshio Baba, Hirokazu Moriyama, Akio Miyachi, Tsuneo Inui
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Patent number: 4502454Abstract: An ignition system for a multi-cylinder internal combustion engine eliminates high-voltage cables and a mechanical distributor in order to reduce electrical power losses due to joule effect caused mainly by the high voltage circuit, comprises a plurality of ignition coils and plugs, one provided for each cylinder, a distribution unit for distributing advance-angle control signals into the respective cylinders, and a booster for boosting the supply voltage in order to reduce the size of the ignition coil, in addition to the conventional ignition system. Furthermore, the ignition coil can be built integrally with the ignition plug for eliminating high-voltage cables connected between coil and plug.Type: GrantFiled: June 28, 1982Date of Patent: March 5, 1985Assignee: Nissan Motor Company, LimitedInventors: Kyugo Hamai, Meroji Nakai, Ryusaburo Inoue, Yasuhiko Nakagawa