Hatai
Akira Hatai, Chiyoda-Ku JP
Patent application number | Description | Published |
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20130056755 | POWER SEMICONDUCTOR MODULE - A transistor chip formed from a wide band gap semiconductor, on which transistor elements for an upper arm are formed is mounted on a front surface of an insulating substrate. A transistor chip formed from a wide band gap semiconductor, on which transistor elements for a lower arm are formed is mounted on a rear surface of the insulating substrate. | 03-07-2013 |
20130258602 | POWER CONVERSION APPARATUS - In a power conversion apparatus including a rectifying module mounted with a power conversion device, an inverter module, and a direct-current reactor, a rectifying module and an inverter module | 10-03-2013 |
Akira Hatai, Tokyo JP
Patent application number | Description | Published |
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20130221895 | MOTOR DRIVE CIRCUIT - A motor drive circuit that performs PWM driving of an AC motor includes: rectifying circuit that rectifies power from an AC power supply; a DC intermediate circuit that smoothes an output of the rectifying circuit and holds the smoothed output; an inverter circuit that executes a PWM control of a voltage applied to the AC motor based on DC power held in the DC intermediate circuit; and a filter circuit that is inserted between the AC power supply and the rectifying circuit, wherein the filter circuit includes a noise filter that is inserted between the AC power supply and the rectifying circuit and reduces harmonic noise, and a band elimination filter that is arranged at a posterior stage of the noise filter and reduces harmonic noise having a bandwidth, which can be generated by the PWM control. | 08-29-2013 |
Ayako Hatai, Wako-Shi, Saitama JP
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20160054348 | VEHICLE WHEEL SPEED SENSOR PROTECTION STRUCTURE - In a vehicle including a pulse ring that rotates together with a wheel, a wheel speed sensor that has a detection portion close to the pulse ring, and a bracket that fixes the wheel speed sensor, a tubular protective wall surrounding the detection portion is provided on the bracket so that an end part, on the pulse ring side, of the protective wall is closer to the pulse ring than the detection portion) of the wheel speed sensor is. This enables the wheel speed sensor to be protected without adding a special component. | 02-25-2016 |
Takashi Hatai, Osaka JP
Patent application number | Description | Published |
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20110163686 | LIGHTING DEVICE - A lighting device comprising a hermetically sealed vessel having a light transmissive property, a gas filled in the hermetically sealed vessel and configured to emit a first light having wavelength when excited by electron, the wavelength of the first light has a range from vacuum ultraviolet to visual light, an electron source disposed within the hermetically sealed vessel, the electron source configured to emit the electron when an operation voltage is applied, anode electrode disposed within the hermetically sealed vessel, a phosphor configured to emit the second light when excited by the first light. The electron source is configured to emit the electron having energy distribution when the electron source receives the emission voltage. The energy distribution having a peak energy. The peak energy is higher than an excitation energy of the gas. The peak energy is lower than an ionization energy of the gas. | 07-07-2011 |
Tetsuya Hatai, Fukuyama-Shi JP
Patent application number | Description | Published |
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20080213936 | Alignment mark forming method, alignment method, semiconductor device manufacturing method, and solid-state image capturing apparatus manufacturing method - An alignment mark forming method according to the present invention includes: an alignment mark forming step of using an impurity implantation region as an alignment target layer and using, as a mask, the same resist film used for forming the impurity implantation region to form an alignment mark that is used when a patterning is performed in at least one of a subsequent impurity implantation step and a subsequent process layer forming step. | 09-04-2008 |
20090258456 | Method for manufacturing a solid-state image capturing apparatus, and electronic information device - A method for manufacturing a solid-state image capturing apparatus including a pixel array constituted of a plurality of pixels, is provided, where each of the plurality of pixels includes a photoelectric conversion section, the method comprising the steps of: forming an impurity diffusion area in a surface area of a semiconductor substrate; and forming a plurality of different impurity diffusion areas in the surface area of the semiconductor substrate, other than the impurity diffusion area constituting the photoelectric conversion section. | 10-15-2009 |