Patents by Inventor Akira Shiota
Akira Shiota 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: 20200204087Abstract: A power generation system includes a power generation unit, a power storage unit, and a voltage step-down unit. The power generation unit includes a generation main body having an electrification film and a counter electrode rotating relative to each other to generate power, and an energy generator generating energy for rotating the electrification film and the counter electrode. The power storage unit stores output power of the power generation unit. The voltage step-down unit is electrically connected to the power generation unit and the power storage unit and reduces output voltage of the power generation unit to a step-down voltage. The step-down voltage obtained by dividing the most energy-efficiently generated output voltage of the power generation unit by a step-down ratio of the voltage step-down unit coincides with storage voltage corresponding to a region between first and second turning points on a discharge curve of the power storage unit.Type: ApplicationFiled: December 19, 2019Publication date: June 25, 2020Applicant: CITIZEN WATCH CO., LTD.Inventors: Shogo Kimura, Akira Shiota, Makoto Watanabe, Akira Izumi
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Patent number: 10644615Abstract: An electrostatic induction generator includes a housing, a first board fixed to the housing, and a second board arranged in parallel to the first board to be able move relative to it, in which electrostatic induction generator, counter electrodes are placed at a first facing surface of the first board, electrically charged films are placed at every other constant interval at a second facing surface of the second board so as to face the counter electrodes, the counter electrodes are comprised of pluralities of first electrodes and second electrodes provided separated from each other at the first facing surface, first electrodes and second electrodes are alternately arranged at constant intervals in a single line, a plurality of lines of single lines of the first electrodes and second electrodes are provided at the first facing surface, and the constant intervals of the plurality of lines respectively differ in phase.Type: GrantFiled: January 5, 2016Date of Patent: May 5, 2020Assignee: CITIZEN WATCH CO., LTD.Inventors: Yoichi Nagata, Akira Shiota, Makoto Watanabe, Akira Izumi, Takashi Ihara
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Publication number: 20180295818Abstract: It is an object of the present invention to provide a transgenic non-human animal, which can appropriately evaluate properties, pharmacological effects and safety of a molecular targeted substance or targeted drug to a human specific molecule, and to provide a method for producing the transgenic non-human animal, which comprises a gene encoding a human specific molecule and a gene encoding a human Fc? receptor family, both genes being introduced in the animal, thereby expressing the gene encoding a human specific molecule and the gene encoding a human Fc? receptor family.Type: ApplicationFiled: April 28, 2016Publication date: October 18, 2018Applicants: Institute of Immunology Co., Ltd., Akita UniversityInventors: Akira SHIOTA, Tatsuya MIZOROKI, Yuki MORITOKI
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Publication number: 20180026552Abstract: An electrostatic induction generator includes a housing, a first board fixed to the housing, and a second board arranged in parallel to the first board to be able move relative to it, in which electrostatic induction generator, counter electrodes are placed at a first facing surface of the first board, electrically charged films are placed at every other constant interval at a second facing surface of the second board so as to face the counter electrodes, the counter electrodes are comprised of pluralities of first electrodes and second electrodes provided separated from each other at the first facing surface, first electrodes and second electrodes are alternately arranged at constant intervals in a single line, a plurality of lines of single lines of the first electrodes and second electrodes are provided at the first facing surface, and the constant intervals of the plurality of lines respectively differ in phase.Type: ApplicationFiled: January 5, 2016Publication date: January 25, 2018Inventors: Yoichi NAGATA, Akira SHIOTA, Makoto WATANABE, Akira IZUMI, Takashi IHARA
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Patent number: 9529330Abstract: An oscillating stepping motor can reduce a required rotational angle of a rotor to drive a star wheel, reduce idle driving, cut the loss of energy required for the driving, reduce power consumption even in high-frequency driving, and stably operate. Two star wheels are located so that the tooth tips thereof are not engaged with each other. A rotor shaft includes a rotor pinion having two feed teeth at a certain aperture angle. One of the feed teeth feeds one of the driving wheels by oscillation of the rotor in one direction and the other of the feed teeth feeds the other of the driving wheels by the oscillation of the rotor in the other. The rotor then oscillates within a certain angle range, thereby sequentially rotating output gears in a certain direction by a certain angle.Type: GrantFiled: September 1, 2011Date of Patent: December 27, 2016Assignee: CITIZEN HOLDINGS CO., LTD.Inventors: Toshiaki Fukushima, Akira Shiota, Toshinari Maeda
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Patent number: 8841875Abstract: Provided is an electronic watch capable of, even if an indicating hand having a large moment of inertia is used, accurately determining success and failure of rotation. The electronic watch detects rotation by using a first detection mode determination circuit (12) and a second detection mode determination circuit (13). In the electronic watch, a timing counter (14) for measuring a time after an output of a normal drive pulse is followed by a detection pulse selection circuit (151) provided as changing means for changing a width or a frequency of a detection pulse in accordance with an output time of the detection pulse. The detection pulse detects the rotation and simultaneously serves as an electromagnetic brake for a rotor (10). The electromagnetic brake for the rotor (10) is controlled by changing the width or the frequency of the detection pulse in a predetermined period, thereby achieving an accurate rotation detection.Type: GrantFiled: October 6, 2010Date of Patent: September 23, 2014Assignees: Citizen Holdings Co., Ltd., Citizen Watch Co., LtdInventors: Yu Takyo, Toshiaki Fukushima, Akira Shiota, Toshinari Maeda, Nobuaki Suzuki
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Publication number: 20130162060Abstract: An oscillating stepping motor can reduce a required rotational angle of a rotor to drive a star wheel, reduce idle driving, cut the loss of energy required for the driving, reduce power consumption even in high-frequency driving, and stably operate. Two star wheels are located so that the tooth tips thereof are not engaged with each other. A rotor shaft includes a rotor pinion having two feed teeth at a certain aperture angle. One of the feed teeth feeds one of the driving wheels by oscillation of the rotor in one direction and the other of the feed teeth feeds the other of the driving wheels by the oscillation of the rotor in the other. The rotor then oscillates within a certain angle range, thereby sequentially rotating output gears in a certain direction by a certain angle.Type: ApplicationFiled: September 1, 2011Publication date: June 27, 2013Inventors: Toshiaki Fukushima, Akira Shiota, Toshinari Maeda
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Publication number: 20120204640Abstract: Provided is an electronic watch capable of, even if an indicating hand having a large moment of inertia is used, accurately determining success and failure of rotation. The electronic watch detects rotation by using a first detection mode determination circuit (12) and a second detection mode determination circuit (13). In the electronic watch, a timing counter (14) for measuring a time after an output of a normal drive pulse is followed by a detection pulse selection circuit (151) provided as changing means for changing a width or a frequency of a detection pulse in accordance with an output time of the detection pulse. The detection pulse detects the rotation and simultaneously serves as an electromagnetic brake for a rotor (10). The electromagnetic brake for the rotor (10) is controlled by changing the width or the frequency of the detection pulse in a predetermined period, thereby achieving an accurate rotation detection.Type: ApplicationFiled: October 6, 2010Publication date: August 16, 2012Applicants: CITIZEN WATCH CO., LTD, CITIZEN HOLDINGS CO., LTD.Inventors: Yu Takyo, Toshiaki Fukushima, Akira Shiota, Toshinari Maeda, Nobuaki Suzuki
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Patent number: 7616225Abstract: The invention is directed to the provision of an exposure apparatus in which is stored an electric current value appropriately determined for supply to a light-emitting device, and a method for producing such an exposure apparatus. The production method according to the invention comprises the steps of supplying a reference electric current to the light-emitting device, and measuring the amount of light from each of the plurality of pixels of the light modulating device, determining whether a minimum value among the amounts of light measured from the plurality of pixels lies within a predetermined range, and determining the value of the electric current to be supplied to the light-emitting device so that the minimum value of the amounts of light falls within the predetermined range when the minimum value of the amounts of light is outside the predetermined range.Type: GrantFiled: October 10, 2003Date of Patent: November 10, 2009Assignee: Citizen Holdings Co., Ltd.Inventors: Akira Shiota, Makoto Yasunaga, Sadao Masubuchi, Akinobu Iwako
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Patent number: 7570388Abstract: The invention provides an exposure apparatus that outputs a stable photographic quality image unaffected by variations in ambient temperature, by suppressing the effects of the temperature variations and achieving accurate grayscale reproduction. In the exposure apparatus, input grayscale data P4 is converted into corrected grayscale data by using a conversion table for correcting for the nonlinearity of exposure density, and grayscale exposure is performed on a photosensitive material by controlling exposure conditions in an exposure head based on the corrected grayscale data; here, the conversion table actually comprises a plurality of conversion tables one for each designated temperature region, and a temperature detector is provided for detecting the ambient temperature, with provisions made to select an appropriate one of the conversion tables under the control of select data in accordance with the temperature data supplied from the temperature detector.Type: GrantFiled: December 8, 2004Date of Patent: August 4, 2009Assignee: Citizen Holdings Co., Ltd.Inventors: Masafumi Yokoyama, Akira Shiota
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Patent number: 7349003Abstract: The invention is directed to the provision of an exposure apparatus that can determine a correction value for each individual light-emitting part by employing a method that detects the amount of light corresponding to one particular light-emitting part from composite light containing light rays from adjacent light-emitting parts, and also to the provision of a method for producing such an exposure apparatus.Type: GrantFiled: October 10, 2003Date of Patent: March 25, 2008Assignee: Citizen Holdings Co., Ltd.Inventors: Akira Shiota, Makoto Yasunaga, Sadao Masubuchi, Akinobu Iwako, Masafumi Yokoyama
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Publication number: 20060290906Abstract: The invention provides an exposure apparatus that outputs a stable photographic quality image unaffected by variations in ambient temperature, by suppressing the effects of the temperature variations and achieving accurate grayscale reproduction. In the exposure apparatus, input grayscale data P4 is converted into corrected grayscale data by using a conversion table for correcting for the nonlinearity of exposure density, and grayscale exposure is performed on a photosensitive material by controlling exposure conditions in an exposure head based on the corrected grayscale data; here, the conversion table actually comprises a plurality of conversion tables one for each designated temperature region, and a temperature detector is provided for detecting the ambient temperature, with provisions made to select an appropriate one of the conversion tables under the control of select data in accordance with the temperature data supplied from the temperature detector.Type: ApplicationFiled: December 8, 2004Publication date: December 28, 2006Inventors: Masafumi Yokoyama, Akira Shiota
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Publication number: 20050083396Abstract: The invention is directed to the provision of an exposure apparatus in which is stored an electric current value appropriately determined for supply to a light-emitting device, and a method for producing such an exposure apparatus. The production method according to the invention comprises the steps of supplying a reference electric current to the light-emitting device, and measuring the amount of light from each of the plurality of pixels of the light modulating device, determining whether a minimum value among the amounts of light measured from the plurality of pixels lies within a predetermined range, and determining the value of the electric current to be supplied to the light-emitting device so that the minimum value of the amounts of light falls within the predetermined range when the minimum value of the amounts of light is outside the predetermined range.Type: ApplicationFiled: October 10, 2003Publication date: April 21, 2005Inventors: Akira Shiota, Makoto Yasunaga, Sadao Masubuchi, Akinobu Iwako
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Publication number: 20050068590Abstract: The invention is directed to the provision of an exposure apparatus that can determine a correction value for each individual light-emitting part by employing a method that detects the amount of light corresponding to one particular light-emitting part from composite light containing light rays from adjacent light-emitting parts, and also to the provision of a method for producing such an exposure apparatus.Type: ApplicationFiled: October 10, 2003Publication date: March 31, 2005Inventors: Akira Shiota, Makoto Yasunaga, Sadao Masubuchi, Akinobu Iwako, Masafumi Yokoyama
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Publication number: 20040090587Abstract: A liquid crystal shutter wherein three shutter rows corresponding to red, green and blue, respectively, are formed on a single liquid crystal shutter substrate. Each shutter row is configured of the liquid crystal held between at least one transparent substrate formed with a common electrode and another transparent substrate formed with cell electrodes corresponding to the cell rows of each of the two shutter rows, arranged in staggered fashion, and lead electrodes. The relation Q=NP holds, where Q is the pitch of the shutter rows, P the pitch of the two cell rows, and N a positive integer larger than 2.Type: ApplicationFiled: August 4, 2003Publication date: May 13, 2004Inventors: Masaaki Matsunaga, Akira Shiota, Koichi Hoshino
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Patent number: 6720986Abstract: An optical printer device which includes an exposure device which makes relative movements, in a predetermined direction, with respect to a photosensitive body. The optical printer also has a plurality of first, second and third light-emitting elements which emit lights of a first, second and third colors. These light-emitting elements are mounted on a first, second and third mounting substrates, independent of one another, which correspond to the first, second and third colors.Type: GrantFiled: October 10, 2001Date of Patent: April 13, 2004Assignee: Citizen Watch Co., Ltd.Inventors: Sadao Masubuchi, Hideyuki Kawashima, Masafumi Yokoyama, Masaaki Matsunaga, Akira Shiota
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Patent number: 6642492Abstract: Calibration of the light emitting elements in an optical printer is carried out by mounting the optical printer on an external monitoring apparatus. The external monitoring apparatus comprises: a sensor mounting portion whereon a plurality of photosensors are mounted in a straight line; a signal processing circuit for processing the signals output from the photosensors; a reference voltage generating circuit; and a comparison and control circuit for comparing the output from the signal processing circuit with the reference voltage from the reference voltage generating circuit and outputting a signal based on the results of the comparison. The photosensors receive the light output from the light emitting elements, being subject to calibration, in the optical printer.Type: GrantFiled: July 14, 1999Date of Patent: November 4, 2003Assignee: Citizen Watch Co., Ltd.Inventors: Akira Shiota, Sadao Masubuchi
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Publication number: 20020134909Abstract: Calibration of the light emitting elements in an optical printer is carried out by mounting the optical printer on an external monitoring apparatus. The external monitoring apparatus comprises: a sensor mounting portion whereon a plurality of photosensors are mounted in a straight line; a signal processing circuit for processing the signals output from the photosensors; a reference voltage generating circuit; and a comparison and control circuit for comparing the output from the signal processing circuit with the reference voltage from the reference voltage generating circuit and outputting a signal based on the results of the comparison. The photosensors receive the light output from the light emitting elements, being subject to calibration, in the optical printer.Type: ApplicationFiled: July 14, 1999Publication date: September 26, 2002Inventors: AKIRA SHIOTA, SADAO MASUBUCHI
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Patent number: 6445403Abstract: In an optical printer apparatus designed so that an optical head (100) having an LED light source (110) therein is moved relatively to a sensitized sheet (500) and an image is formed by emitting a plurality of color light beams in regular order from the LED so that the light beams are focused at given spaces on the sensitized sheet, an image pitch P for the color light beams is substantially equal to an integer multiple of the maximum exposure distance D.Type: GrantFiled: September 28, 1999Date of Patent: September 3, 2002Assignee: Citizen Watch Co., Ltd.Inventors: Sadao Masubuchi, Shigeru Futakami, Masaaki Matsunaga, Masafumi Yokoyama, Akira Shiota, Shinichi Nonaka
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Publication number: 20020044194Abstract: An optical printer device comprises an exposure device which makes relative movements, in a predetermined direction, with respect to a photosensitive body. The optical printer also has a plurality of first, second and third light-emitting elements which emit lights of a first, second and third colors. These light-emitting elements are mounted on a first, second and third mounting substrates, independent of one another, which correspond to the first, second and third colors.Type: ApplicationFiled: October 10, 2001Publication date: April 18, 2002Inventors: Sadao Masubuchi, Hideyuki Kawashima, Masafumi Yokoyama, Masaaki Matsunaga, Akira Shiota