Patents by Inventor Masafumi Hashimoto
Masafumi Hashimoto 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: 7701139Abstract: The present invention includes an electrode having a filament with the end of each lead wire connected to each end of the filament, a cylindrical glass tube in which the electrode is provided, and a thermal fuse which is electrically connected to the lead wires in series, and is provided near the electrode on an outer peripheral surface of the glass tube, wherein, when a position on the outer peripheral surface of the glass tube which extends in a radial direction of the glass tube from a connecting portion of the filament and the lead wire, serve as a reference position, in case where the diameter of the glass tube is 8 mm or more, the thermal fuse is arranged at a distance of 1.5 mm or less from the reference position in the longitudinal direction of the glass tube.Type: GrantFiled: June 25, 2007Date of Patent: April 20, 2010Assignee: NEC Lighting, Ltd.Inventor: Masafumi Hashimoto
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Publication number: 20100073977Abstract: An increase in a ripple voltage of a capacitor in a smoothing circuit is prevented to achieve a compact capacitor and cost reduction for capacitors in an electric power supply circuit which performs PAM control using a switching element. An electric power supply circuit includes a bridge circuit (12) for rectifying alternating current power, a smoothing circuit (13) which has two capacitors (C1 and C2) serially connected to each other, and a PAM control section (15) for turning a switching element (S) on and off at a predetermined timing. The PAM control section (15) includes a phase difference detection section (15d) which detects a phase shift of a PAM waveform based on a change in a voltage difference between the two capacitors (C1 and C2), and a phase correction section (15e) which corrects the phase of the PAM waveform so that an input current has a sine waveform.Type: ApplicationFiled: March 31, 2008Publication date: March 25, 2010Applicant: Daikin Industries, Ltd.Inventors: Ryou Nakamoto, Masafumi Hashimoto, Keisuke Shimatani, Keiichi Yoshisaka, Masakazu Katou
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Publication number: 20100061128Abstract: An electric power supply circuit includes a switching element (S) for causing a short-circuit for output power of a diode bridge circuit (12), a zero-cross detector section (5a) for detecting a point at which an input voltage reaches a level equal to or lower than a reference level, a timer section (5d) for starting a count upon the detection by the zero-cross detector section (5a), and a PAM waveform output section (5c) for causing the switching element (S) to perform switching with a predetermined output timing so that a waveform of the input current is caused to approximate to a sine wave. The circuit further includes a correction section (5e) for correcting, when a difference between a detection interval from detection to detection by the zero-cross detector section (5a), and an average value for detection intervals up to current detection occurs, an initial value of the count of the timer section (5d) according to the difference.Type: ApplicationFiled: March 18, 2008Publication date: March 11, 2010Inventors: Ryou Nakamoto, Masafumi Hashimoto, Keisuke Shimatani, Keiichi Yoshisaka, Masakazu Katou
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Publication number: 20100061127Abstract: The power supply device according to the present invention converts alternating-current power into direct-current power, and supplies the direct-current power to a load. Further, the power supply device includes a buffer, a control section, a rectifier circuit, a smoothing circuit, and a switch. After a predetermined zero cross point is detected, the control section uses in common, over a predetermined period of the alternating-current power, predetermined parameters retained in the buffer in calculating a timing at which a PAM interrupt pulse is generated.Type: ApplicationFiled: March 17, 2008Publication date: March 11, 2010Inventors: Masakazu Katou, Ryou Nakamoto, Keisuke Shimatani, Keiichi Yoshisaka, Masafumi Hashimoto
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Publication number: 20100045167Abstract: There is provided a surface light-emitting device that improves the light emission efficiency and an illuminating apparatus and a display apparatus that include the surface light-emitting element. A surface light-emitting device includes transparent substrate 1 including a central thick portion 1b protruding in the direction of light emission and a periphery thin portion 1a to be held by a holder; transparent electrode 2 laminated on transparent substrate 1 and functioning as an anode; metal electrode 6 opposite transparent electrode 2 and functioning as a cathode; and light-emitting layer 4 sandwiched between transparent electrode 2 and metal electrode 6.Type: ApplicationFiled: August 6, 2009Publication date: February 25, 2010Inventors: Yasuki Kawashima, Masafumi Hashimoto, Junichi Yamanari
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Publication number: 20100014334Abstract: An electric power supply circuit includes a diode bridge circuit (12) for rectifying an alternating current, a switching element (S) for causing a short-circuit for output power of the diode bridge circuit (12), and a PAM control section (15) for causing the switching element (S) to perform switching with a predetermined timing so that a waveform of an input current approximates to a sine wave. The PAM control section (15) outputs ON/OFF pulses so that five pulses are output for each zero-cross point and one of the five pulses located in center extends over the zero-cross point at any time.Type: ApplicationFiled: March 18, 2008Publication date: January 21, 2010Inventors: Masakazu Katou, Ryou Nakamoto, Keisuke Shimatani, Keiichi Yoshisaka, Masafumi Hashimoto
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Patent number: 7598848Abstract: An apparatus having a laser radar is used to recognize a pedestrian by detecting a position of reflective objects, mapping the objects in a two-dimensional coordinate system, determining whether the objects are moving, and grouping moving objects closely located with each other. Based on a size of an object group, the pedestrian associated with the object group is accurately recognized.Type: GrantFiled: May 21, 2007Date of Patent: October 6, 2009Assignees: Denso CorporationInventors: Kiyokazu Takagi, Masafumi Hashimoto
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Publication number: 20090142607Abstract: A copper-clad laminate is prepared by laminating a copper foil on one side or both sides of a polyimide film by thermocompression bonding. The flexibility of the copper-clad laminate is remarkably improved by employing a polyimide film having a thickness of 5 to 20 ?m and a copper foil having a thickness of 1 to 18 ?m.Type: ApplicationFiled: April 4, 2006Publication date: June 4, 2009Applicant: UBE Industries LtdInventors: Kohji Narui, Masafumi Hashimoto, Takuro Kochiyama
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Patent number: 7498895Abstract: A noise filter eliminates noise generated by a noise generating source in an outdoor unit in an air conditioner. Power is supplied from a power source to an indoor unit via the outdoor unit. A choke coil is formed by winding power source lines and indoor/outdoor lines inter unit lines around a common magnetic body. The number of turns of the power source lines and that of the indoor/outdoor lines are preferably set so as to be almost proportional to their impedances. Due to this arrangement, noises of the lines can be cancelled while maintaining balance of influences on the magnetic field of the choke coil.Type: GrantFiled: January 8, 2003Date of Patent: March 3, 2009Assignee: Daikin Industries, Ltd.Inventors: Masafumi Hashimoto, Sumio Kagimura, Hiroshi Dohmae
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Patent number: 7468897Abstract: In this power converter, a first capacitor for stepping down of voltage, a first diode for half-wave rectification, and a second capacitor for smoothing are interposed between first and second input connections for input of AC voltage; and a second diode for discharge of the first capacitor is interposed between the second input connection and an input end of the first diode. AC voltage supplied from an AC power supply is divided (stepped down) by the first and second capacitors, rectified to DC voltage by the first diode, smoothed by the second capacitor, and supplied, as an output voltage defined by Zener diodes, to the load side through the first and second output connections.Type: GrantFiled: November 18, 2004Date of Patent: December 23, 2008Assignee: Daikin Industries, Ltd.Inventors: Nobuhiro Nakamura, Masafumi Hashimoto
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Publication number: 20080032584Abstract: A method of fabricating a nitrogen discharge lamp includes: a first evacuation step for evacuating the gas in a glass tube, a first gas introduction step for introducing nitrogen gas into the glass tube that has undergone the first evacuation step, a preliminary discharge step for producing electric discharge in the glass tube that has undergone the first gas introduction step, a second evacuation step for evacuating the gas inside the glass tube that has undergone the preliminary discharge step, and a second gas introduction step for introducing at least nitrogen gas and a noble gas into the glass tube that has undergone the second gas introduction step.Type: ApplicationFiled: July 12, 2007Publication date: February 7, 2008Inventors: Masafumi Hashimoto, Kenjirou Toryuu, Masafumi Jinno, Hideki Motomura, Tatsuya Matsuda, Tsuyoshi Sato
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Publication number: 20080019567Abstract: An apparatus having a laser radar is used to recognize a pedestrian by detecting a position of reflective objects, mapping the objects in a two-dimensional coordinate system, determining whether the objects are moving, and grouping moving objects closely located with each other. Based on a size of an object group, the pedestrian associated with the object group is accurately recognized.Type: ApplicationFiled: May 21, 2007Publication date: January 24, 2008Applicants: DENSO CorporationInventors: Kiyokazu Takagi, Masafumi Hashimoto
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Publication number: 20080012489Abstract: The present invention includes an electrode having a filament with the end of each lead wire connected to each end of the filament, a cylindrical glass tube in which the electrode is provided, and a thermal fuse which is electrically connected to the lead wires in series, and is provided near the electrode on an outer peripheral surface of the glass tube, wherein, when a position on the outer peripheral surface of the glass tube which extends in a radial direction of the glass tube from a connecting portion of the filament and the lead wire, serve as a reference position, in case where the diameter of the glass tube is 8 mm or more, the thermal fuse is arranged at a distance of 1.5 mm or less from the reference position in the longitudinal direction of the glass tube.Type: ApplicationFiled: June 25, 2007Publication date: January 17, 2008Inventor: Masafumi HASHIMOTO
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Publication number: 20070196675Abstract: An adhesion-enhanced polyimide film which includes a core layer composed of a polyimide (a) having high rigidity and a low linear expansion coefficient, at least one side of which has a thin-layer formed by heating a coated layer including a heat-resistant surface treatment agent and a polyimide precursor which yields a highly heat-resistant amorphous polyimide (B).Type: ApplicationFiled: March 2, 2005Publication date: August 23, 2007Applicant: UBE INDUSTRIES, LTD.Inventors: Masafumi Hashimoto, Takeshi Uekido, Toshiyuki Nishino, Toshihiko Anno
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Publication number: 20070133237Abstract: In this power converter, a first capacitor for stepping down of voltage, a first diode for half-wave rectification, and a second capacitor for smoothing are interposed between first and second input connections for input of AC voltage; and a second diode for discharge of the first capacitor is interposed between the second input connection and an input end of the first diode. AC voltage supplied from an AC power supply is divided (stepped down) by the first and second capacitors, rectified to DC voltage by the first diode, smoothed by the second capacitor, and supplied, as an output voltage defined by Zener diodes, to the load side through the first and second output connections.Type: ApplicationFiled: November 18, 2004Publication date: June 14, 2007Inventors: Nobuhiro Nakamura, Masafumi Hashimoto
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Patent number: 7186456Abstract: An easily slidable polyimide film having a polyimide surface layer comprising a polyimide which is thermoplastic and has a glass transition temperature of 190–450° C., wherein there are dispersed in the polyimide of the polyimide surface layer, in a proportion of approximately 0.5–10 mass % based on the polyimide of the polyimide surface layer, wholly aromatic polyimide particles made of a polyimide comprising at least 80 mass % of a pyromellitic acid component and a p-phenylenediamine component, and having a median size of 0.3–0.8 ?m and a maximum size of no greater than 2 ?m, in at least about 1 ?m of the polyimide surface layer.Type: GrantFiled: September 28, 2004Date of Patent: March 6, 2007Assignee: Ube Industries, Ltd.Inventors: Masafumi Hashimoto, Toshiyuki Nishino, Toshihiko Anno, Hiroaki Yamaguchi
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Patent number: 6984536Abstract: Disclosed herein are (1) a light-emitting semiconductor device that uses a gallium nitride compound semiconductor (AlxGa1?xN) in which the n-layer of n-type gallium nitride compound semiconductor (AlxGa1?xN) is of double-layer structure including an n-layer of low carrier concentration and an n+-layer of high carrier concentration, the former being adjacent to the i-layer of insulating gallium nitride compound semiconductor (AlxGa1?xN); (2) a light-emitting semiconductor device of similar structure as above in which the i-layer is of double-layer structure including an iL-layer of low impurity concentration containing p-type impurities in comparatively low concentration and an iH-layer of high impurity concentration containing p-type impurities in comparatively high concentration, the former being adjacent to the n-layer; (3) a light-emitting semiconductor device having both of the above-mentioned features and (4) a method of producing a layer of an n-type gallium nitride compound semiconductor (AlxGa1?xN) haType: GrantFiled: January 23, 2002Date of Patent: January 10, 2006Assignees: Toyoda Gosei Co., Ltd., Japan Science and Technology Agency, Nagoya UniversityInventors: Katsuhide Manabe, Akira Mabuchi, Hisaki Kato, Michinari Sassa, Norikatsu Koide, Shiro Yamazaki, Masafumi Hashimoto, Isamu Akasaki
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Publication number: 20050093651Abstract: The present invention relates to a noise filter and, particularly, its object is to efficiently eliminate noise which generates in a noise generating source in an outdoor unit in an air conditioner in which power is supplied from a power source to an indoor unit via the outdoor unit. In order to achieve the object, a choke coil is formed by winding power source lines (5a, 5b) and indoor/outdoor lines (Lin) around a common magnetic body or the like. The number of turns of the power source lines (5a, 5b) and that of the indoor/outdoor lines (Lin) are set so as to be almost proportional to their impedances. By canceling out noises of the lines while maintaining balance of influences on the magnetic field of the coke coil, noises are eliminated efficiently.Type: ApplicationFiled: January 8, 2003Publication date: May 5, 2005Inventors: Masafumi Hashimoto, Sumio Kagimura, Hiroshi Dohmae
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Publication number: 20050074592Abstract: An easily slidable polyimide film having a polyimide surface layer comprising a polyimide which is thermoplastic and has a glass transition temperature of 190-450° C., wherein there are dispersed in the polyimide of the polyimide surface layer, in a proportion of approximately 0.5-10 mass % based on the polyimide of the polyimide surface layer, wholly aromatic polyimide particles made of a polyimide comprising at least 80 mass % of a pyromellitic acid component and a p-phenylenediamine component, and having a median size of 0.3-0.8 ?m and a maximum size of no greater than 2 ?m, in at least about 1 ?m of the polyimide surface layer.Type: ApplicationFiled: September 28, 2004Publication date: April 7, 2005Applicant: Ube Industries, Ltd., a corporation of JapanInventors: Masafumi Hashimoto, Toshiyuki Nishino, Toshihiko Anno, Hiroaki Yamaguchi
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Patent number: 6830992Abstract: Disclosed herein are (1) a light-emitting semiconductor device that uses a gallium nitride compound semiconductor (AlxGa1−xN) in which the n-layer of n-type gallium nitride compound semiconductor (AlxGa1−xN) is of double-layer structure including an n-layer of low carrier concentration and an n+-layer of high carrier concentration, the former being adjacent to the i-layer of insulating gallium nitride compound semiconductor (AlxGa1−xN); (2) a light-emitting semiconductor device of similar structure as above in which the i-layer is of double-layer structure including an iL-layer of low impurity concentration containing p-type impurities in comparatively low concentration and an iH-layer of high impurity concentration containing p-type impurities in comparatively high concentration, the former being adjacent to the n-layer; (3) a light-emitting semiconductor device having both of the above-mentioned features and (4) a method of producing a layer of an n-type gallium nitride compound semicType: GrantFiled: October 2, 2000Date of Patent: December 14, 2004Assignees: Toyoda Gosei Co., Ltd., Nagoya University, Japan Science and Technology CorporationInventors: Katsuhide Manabe, Akira Mabuchi, Hisaki Kato, Michinari Sassa, Norikatsu Koide, Shiro Yamazaki, Masafumi Hashimoto, Isamu Akasaki