Patents by Inventor Yasuhiro Hirao
Yasuhiro Hirao 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: 7322204Abstract: A low temperature zone forming system by convection type thermal stratification in which the low temperature zone separated from polluted outside air is formed on a movable or fixed table for handling commodities such as marine products while maintaining freshness thereof during the period from carrying-in in the whole sale market, during selling by auction, until shipment of the commodities from the market, comprising an upward-open case body (30) mounted on a chassis (30a), a separate brine chilling unit (30b), and a brine piping (30c), the upward-open case body (30) further comprising a roller conveyer (35) installed in the center part of the floor of the case body (30), cooling flat plates each of which is installed adjacent to the roller conveyer (35), and cooling flat plates are installed on the inside faces of both laterally longitudinal side walls.Type: GrantFiled: March 18, 2003Date of Patent: January 29, 2008Assignee: Mayekawa Mfg. Co., Ltd.Inventors: Yasuhiro Hirao, Kazuo Hariu, Hiroyuki Nakagawa, Kousaku Nishida
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Patent number: 7051546Abstract: Defrosting frost deposited on the coolers disposed in a refrigerating-storage room for cooling the room can be carried out without the necessity of stopping the operation of refrigerating cycle and with low cost and high efficiency. Compressed air is blown to the coolers by means of nozzles to which the compressed air is supplied intermittently.Type: GrantFiled: March 4, 2004Date of Patent: May 30, 2006Assignee: Mayekawa Mfg. Co., Ltd.Inventors: Yasuhiro Hirao, Kazuyuki Iwase, Takeshi Kamimura
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Publication number: 20050223729Abstract: A low temperature zone forming system by convection type thermal stratification in which the low temperature zone separated from polluted outside air is formed on a movable or fixed table for handling commodities such as marine products while maintaining freshness thereof during the period from carrying-in in the whole sale market, during selling by auction, until shipment of the commodities from the market, comprising an upward-open case body (30) mounted on a chassis (30a), a separate brine chilling unit (30b), and a brine piping (30c), the upward-open case body (30) further comprising a roller conveyer (35) installed in the center part of the floor of the case body (30), cooling flat plates each of which is installed adjacent to the roller conveyer (35), and cooling flat plates are installed on the inside faces of both laterally longitudinal side walls.Type: ApplicationFiled: March 18, 2003Publication date: October 13, 2005Applicant: MAYEKAWA MFG. CO., LTD.Inventors: Yasuhiro Hirao, Kazuo Hariu, Hiroyki Nakagawa, Kousaku Nishida
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Publication number: 20050193756Abstract: Defrosting frost deposited on the coolers disposed in a refrigerating-storage room for cooling the room can be carried out without the necessity of stopping the operation of refrigerating cycle and with low cost and high efficiency. Compressed air is blown to the coolers by means of nozzles to which the compressed air is supplied intermittently.Type: ApplicationFiled: March 4, 2004Publication date: September 8, 2005Applicant: Mayekawa Mfg. Co., Ltd.Inventors: Yasuhiro Hirao, Kazuyuki Iwase, Takeshi Kamimura
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Publication number: 20050019459Abstract: The present invention provides low temperature zone forming equipment having a storage function capable of controlling temperature and humidity and a method and equipment for maintaining the quality of hauled fishes in an auction market of marine products such as fishes shellfishes, which constitute a low temperature distribution system closely linked with a purchase and sale system in consideration of the characteristics of the market. The low temperature zone forming equipment used in the low temperature distribution system is composed of a chilled air generator 1 and an enclosure wall 3 of flexible hollow structure, said enclosure wall having openings for entrance and exit of water at an end part thereof and openings for supplying chilled air produced in said chilled air generator and having exhaust openings formed of knitted cloth along the inside of the enclosure wall.Type: ApplicationFiled: August 27, 2004Publication date: January 27, 2005Applicant: Mayekawa Mfg. Co., Ltd.Inventors: Masaru Murakami, Yasuhiro Hirao
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Patent number: 6792768Abstract: The present invention provides low temperature zone forming equipment having a storage function capable of controlling temperature and humidity and a method and equipment for maintaining the quality of hauled fishes in an auction market of marine products such as fishes shellfishes, which constitute a low temperature distribution system closely linked with a purchase and sale system in consideration of the characteristics of the market. The low temperature zone forming equipment used in the low temperature distribution system is composed of a chilled air generator 1 and an enclosure wall 3 of flexible hollow structure, said enclosure wall having openings for entrance and exit of water at an end part thereof and openings for supplying chilled air produced in said chilled air generator and having exhaust openings formed of knitted cloth along the inside of the enclosure wall.Type: GrantFiled: January 9, 2003Date of Patent: September 21, 2004Assignee: Mayekawa Manufacturing Co., Ltd.Inventors: Masaru Murakami, Yasuhiro Hirao
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Publication number: 20030131616Abstract: The present invention provides low temperature zone forming equipment having a storage function capable of controlling temperature and humidity and a method and equipment for maintaining the quality of hauled fishes in an auction market of marine products such as fishes shellfishes, which constitute a low temperature distribution system closely linked with a purchase and sale system in consideration of the characteristics of the market.Type: ApplicationFiled: January 9, 2003Publication date: July 17, 2003Applicant: Mayekawa Mfg. Co., Ltd.Inventors: Masaru Murakami, Yasuhiro Hirao
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Patent number: 6532761Abstract: The present invention provides low temperature zone forming equipment having a storage function capable of controlling temperature and humidity and a method and equipment for maintaining the quality of hauled fishes in an auction market of marine products such as fishes shellfishes, which constitute a low temperature distribution system closely linked with a purchase and sale system in consideration of the characteristics of the market. The low temperature zone forming equipment used in the low temperature distribution system is composed of a chilled air generator 1 and an enclosure wall 3 of flexible hollow structure, said enclosure wall having openings for entrance and exit of water at an end part thereof and openings for supplying chilled air produced in said chilled air generator and having exhaust openings formed of knitted cloth along the inside of the enclosure wall.Type: GrantFiled: December 21, 2001Date of Patent: March 18, 2003Assignee: Mayekawa Manufacturing Co., Ltd.Inventors: Masaru Murakami, Yasuhiro Hirao
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Publication number: 20020116939Abstract: The present invention provides low temperature zone forming equipment having a storage function capable of controlling temperature and humidity and a method and equipment for maintaining the quality of hauled fishes in an auction market of marine products such as fishes shellfishes, which constitute a low temperature distribution system closely linked with a purchase and sale system in consideration of the characteristics of the market.Type: ApplicationFiled: December 21, 2001Publication date: August 29, 2002Inventors: Masaru Murakami, Yasuhiro Hirao
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Patent number: 6334332Abstract: A low temperature waste crushing system including a low temperature freezing section for cooling waste material below the cold shortness transition temperature by receiving a supply of refrigeration from a heat sink, and a crushing section for crushing the material cooled in the low temperature freezing section by taking advantage of cold shortness. The low temperature freezing section is configured in dual steps, the preceding step being supplied with the higher temperature refrigeration of the first refrigerating cycle and the succeeding step being supplied with the lower temperature refrigeration of the second refrigerating cycle.Type: GrantFiled: June 8, 2000Date of Patent: January 1, 2002Assignee: Mayekawa Mfg. Co., Ltd.Inventors: Makoto Yamamoto, Yukio Hirano, Seiichiro Matsuda, Yasuhiro Hirao, Choiku Yoshikawa, Kazutoshi Ito
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Patent number: 6191668Abstract: A coaxial resonator according to the present invention has an outer conductor on an outer peripheral surface of a dielectric block having at least four side surfaces and having a through hole provided in its approximately central part and an inner conductor on an inner peripheral surface of the through hole, and one of two end faces perpendicular to the through hole is opened and the other end face is short-circuited. A pair of an input electrode and an output electrode which are not brought into electrical contact with the outer conductor and are independent of each other is provided in a position in proximity to the opened end face on the outer peripheral surface of the dielectric block, and respective portions of both the electrodes are extended to the side surfaces, which are respectively adjacent to the electrodes, of the dielectric block.Type: GrantFiled: September 22, 1998Date of Patent: February 20, 2001Assignee: Sanyo Electric Co., Ltd.Inventors: Kousuke Takeuchi, Yasumi Kobayashi, Yasuhiro Hirao, Kenichi Shibata, Kazuhiro Kuroki
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Patent number: 6165053Abstract: Processing, such as grinding or cutting, in a cold air blast is performed at low temperature with higher precision and higher efficiency in a pollution-less situation, wherein a conventional processing fluid is not applied. A compressed dry cold air of a temperature of minus 30.degree. C. or lower is blasted to a processing spot during processing, while a pollution-less fine mist of an oil, such as Accu-Lube, is supplied to the surface of a grinding stone in a small amount, or with a processing tool which has been treated in a fixed lubrication treatment. The apparatus includes a cooler for cooling a temperature of a filtered, compressed, dry air to minus 1.degree. C. or lowers a cold air blasting unit for supplying the cooled dry air to a processing spot, and a device which supplies a mist of a pollution-less oil, such as a vegetable oil or the like, to the processing spot directly or indirectly by the help of the processing tool.Type: GrantFiled: July 22, 1997Date of Patent: December 26, 2000Assignee: Mayekawa Mfg. Co., Ltd.Inventors: Kazuhiko Yokokawa, Munehiko Yokokawa, Yasuhiro Hirao
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Patent number: 6037699Abstract: The invention provides a surface acoustic wave device which has a thin film formed on a surface of a substrate adapted to excite longitudinal wave-type surface acoustic waves, longitudinal wave-type quasi surface acoustic waves or longitudinal wave-type surface skimming bulk waves to thereby give an increased electromechanical coupling coefficient and at the same time minimize the temperature coefficient of delay time. For example, in a surface acoustic wave device having an aluminum thin film formed on a surface of a lithium tantalate substrate, the direction of propagation of longitudinal wave-type quasi surface acoustic waves is (40 deg to 90 deg, 40 deg to 90 deg, 0 deg to 60 deg) as expressed in Eulerian angles and within a range equivalent thereto, and the product of wave number of longitudinal wave-type quasi surface acoustic waves and the thickness of the thin film is at least 1.0, preferably in the range of 1.3 to 2.0. The device provided exhibits higher performance than in the paior art.Type: GrantFiled: January 9, 1998Date of Patent: March 14, 2000Assignees: Sanyo Electric Co., Ltd., Yasutaka ShimizuInventors: Yasumi Kobayashi, Kuniyuki Matsui, Yasuhiro Hirao, Kosuke Takeuchi, Kenichi Shibata, Yusuke Takahashi, Tateo Kondo, Yasutaka Shimizu
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Patent number: 6034577Abstract: A surface acoustic wave filter having one or a plurality of filter functional units each comprising a series arm resonator and a parallel arm resonator. Each of the series arm resonator and the parallel arm resonator is constituted by an interdigital transducer and grating reflectors formed on a piezoelectric substrate composed of 64.degree.-rotated Y-cut X-propagating LiNbO.sub.3. The series arm resonator is constructed by electrically connecting a one-port resonator in series with a signal line, and the parallel arm resonator is constructed by electrically connecting a one-port resonator in parallel with the signal line. In the interdigital transducer in the series arm resonator and/or the parallel arm resonator, one or more sets of electrode fingers continuously adjacent to each other are formed.Type: GrantFiled: September 22, 1998Date of Patent: March 7, 2000Assignee: Sanyo Electric Co., Ltd.Inventors: Kuniyuki Matsui, Yasuhiro Hirao, Yasumi Kobayashi, Kousuke Takeuchi, Kenichi Shibata
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Patent number: 5877662Abstract: A surface acoustic wave filter according to the present invention is constructed by connecting in series one or two or more filter functional units each comprising a first surface acoustic wave resonator having input and output terminals connected in series with a signal line and a second surface acoustic wave resonator having input and output terminals one of which is connected to the signal line and the other of which is grounded. The first surface acoustic wave resonator is constituted by one interdigital transducer and a pair of electrically open strip type grating reflectors with the interdigital transducer interposed therebetween, and the second surface acoustic wave resonator is constituted by one interdigital transducer and a pair of electrically short strip type grating reflectors with the interdigital transducer interposed therebetween.Type: GrantFiled: April 19, 1996Date of Patent: March 2, 1999Assignee: Sanyo Electric Co., Ltd.Inventors: Yasumi Kobayashi, Kuniyuki Matsui, Yasuhiro Hirao, Kousuke Takeuchi, Hiroshi Kayaki, Yusuke Takahashi, Toshiharu Tanaka, Isao Kiyose, Kenichi Shibata
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Patent number: 5844453Abstract: A surface acoustic wave filter according to the present invention has one or a plurality of filter functional units each comprising a series arm resonator and a parallel arm resonator. Each of the series arm resonator and the parallel arm resonator is constituted by a interdigital transducer and grating reflectors formed on a piezoelectric substrate composed of 64.degree.-rotated Y-cut X-propagating LiNbO.sub.3. The series arm resonator is constructed by electrically connecting a one-port resonator in series with a signal line, and the parallel arm resonator is constructed by electrically connecting a one-port resonator in parallel with the signal line. In the interdigital transducer in the series arm resonator and/or the parallel arm resonator, one or more sets of electrode fingers continuously adjacent to each other are formed.Type: GrantFiled: May 29, 1996Date of Patent: December 1, 1998Assignee: Sanyo Electric Co., Ltd.Inventors: Kuniyuki Matsui, Yasuhiro Hirao, Yasumi Kobayashi, Kousuke Takeuchi, Kenichi Shibata
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Patent number: 5808523Abstract: A high-frequency filter having series and parallel electrode patterns formed on a mount substrate, surface acoustic wave resonators connected to a signal input/output line of the electrode patterns in series, and coaxial dielectric resonators having respective one input/output terminals connected to the signal input/output line and the other input/output terminals connected to a ground element. In such a composite high-frequency filter, the surface acoustic wave resonators form the resonators in the serial arms while the coaxial dielectric resonators form resonators in the parallel arms. The high-frequency filter can meet all the requirements of enhanced miniaturization, selectivity and power handling.Type: GrantFiled: October 28, 1997Date of Patent: September 15, 1998Assignee: Sanyo Electric Co., Ltd.Inventors: Yasumi Kobayashi, Kuniyuki Matsui, Yasuhiro Hirao, Kousuke Takeuchi, Kenichi Shibata
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Patent number: 5760522Abstract: The invention provides a surface acoustic wave device which has a thin film formed on a surface of a substrate adapted to excite longitudinal wave-type surface acoustic waves, longitudinal wave-type quasi surface acoustic waves or longitudinal wave-type surface skimming bulk waves to thereby give an increased electromechanical coupling coefficient and at the same time minimize the temperature coefficient of delay time. For example, in a surface acoustic wave device having an aluminum thin film formed on a surface of a lithium tantalate substrate, the direction of propagation of longitudinal wave-type quasi surface acoustic waves is (40 deg to 90 deg, 40 deg to 90 deg, 0 deg to 60 deg) as expressed in Eulerian angles and within a range equivalent thereto, and the product of wave number of longitudinal wave-type quasi surface acoustic waves and the thickness of the thin film is at least 1.0, preferably in the range of 1.3 to 2.0. The device provided exhibits higher performance than in the paior art.Type: GrantFiled: April 9, 1996Date of Patent: June 2, 1998Assignees: Sanyo Electric Co., Ltd., Yasutaka ShimizuInventors: Yasumi Kobayashi, Kuniyuki Matsui, Yasuhiro Hirao, Kosuke Takeuchi, Kenichi Shibata, Yusuke Takahashi, Tateo Kondo, Yasutaka Shimizu
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Patent number: 5719537Abstract: In a resonator-type surface acoustic wave filter comprising a lithium tantalate substrate, lithium niobate substrate or lithium tetraborate substrate having a cut plane of high velocity, the direction of propagation of surface acoustic waves is set within the range of (40 deg to 90 deg, 40 deg to 90 deg, 0 deg to 60 deg) as expressed in Eulerian angles, and the frequency difference .increment.f between the resonance frequency frs of series resonators and the resonance frequency frp of parallel resonators is set within a predetermined range formulated with the center frequency, the capacitance Cos of the series resonators and the capacitance Cop of the parallel resonators taken as parameters. Optimum ranges of the required design parameters are thus clarified to assure the resonator-type surface acoustic wave filter of higher performance.Type: GrantFiled: April 9, 1996Date of Patent: February 17, 1998Assignees: Sanyo Electric Co., Ltd., Yasutaka ShimizuInventors: Kuniyuki Matsui, Yasuhiro Hirao, Yasumi Kobayashi, Kosuke Takeuchi, Kenichi Shibata, Masami Ikeda, Toshiharu Tanaka, Yasutaka Shimizu
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Patent number: 5719536Abstract: In a resonator-type surface acoustic wave filter comprising a lithium tantalate substrate, lithium niobate substrate or lithium tetraborate substrate having a cut plane of high velocity, the direction of propagation of surface acoustic waves is set within the range of (40 deg to 90 deg, 40 deg to 90 deg, 0 deg to 60 deg) as expressed in Eulerian angles, and the capacitance Cos of the series resonators and the capacitance Cop of the parallel resonators are set within a predetermined range formulated with the center frequency taken as a parameter. Optimum ranges of the required design parameters are thus clarified to assure the resonator-type surface acoustic wave filter of higher performance.Type: GrantFiled: April 9, 1996Date of Patent: February 17, 1998Assignees: Sanyo Electric Co., Ltd., Yasutaka ShimizuInventors: Kuniyuki Matsui, Yasuhiro Hirao, Yasumi Kobayashi, Kosuke Takeuchi, Kenichi Shibata, Yusuke Takahashi, Tateo Kondo, Yasutaka Shimizu