Patents by Inventor Takashi Hiraga
Takashi Hiraga 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: 7801443Abstract: An automatic circulation collection type data system is constructed by connecting a monitoring device and data collecting modules disposed at respective places through optical cables. The monitoring device transmits a trigger pulse for data collection through the optical cable to each data collecting module. An identification code is given to each data collecting module, and each data collecting module has an automatic circulation mechanism comprising first and second optical switches, a data collecting unit, and a controller 6 for performing various kinds of control for data collection. When receiving the trigger pulse from the monitoring device, the automatic circulation mechanism turns on the third switch and transmits the collected data through the optical cable to the monitoring device together with the identification code, and also transmits a trigger pulse through the optical cable to a next data collecting module.Type: GrantFiled: July 24, 2007Date of Patent: September 21, 2010Assignees: National Institute of Advanced Industrial Science and Technology, Dainichiseika Color & Chemicals Mgf. Co., Ltd., Spacecreation Co., Ltd., Inter Energy Co., Ltd.Inventors: Takashi Hiraga, Ichiro Ueno, Noritaka Yamamoto, Toshiko Mizokuro, Nobutaka Tanigaki, Norio Tanaka, Kuniaki Aoki, Hirofumi Watanabe, Shiro Futaki
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Optically controlled optical-path-switching-type data distribution apparatus and distribution method
Patent number: 7792398Abstract: Data to be sent are, in a data communication unit, first divided into electric signal packets by a data transmission/receipt control unit, whereby an electric signal sequence tag is added to each electric signal packet, then converted into optical packets by an optical signal transmitting unit, and transmitted through an optical signal path. At optical switch, the optical paths of the packets are switched to optical signal paths by the actions of optical destination tags that are respectively synchronized with optical packets and irradiated by an optical signal transmitting unit. At optical signal receiving units, the received optical packets are converted to electric signal packets, and reassembled to be original data according to the identification information on the reassembly sequence recorded in the sequence tag in an electric signal packet by data transmission/receipt control units, and distributed to client devices as electric signals.Type: GrantFiled: March 14, 2005Date of Patent: September 7, 2010Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., National Institute of Advanced Industrial Science and TechnologyInventors: Norio Tanaka, Ichiro Ueno, Takashi Hiraga, Nobutaka Tanigaki, Toshiko Mizokuro, Noritaka Yamamoto, Hiroyuki Mochizuki -
Patent number: 7729614Abstract: A data distribution system transmitting and receiving a large capacity of data such as image data smoothly without incurring a delay over an optical fiber line located between a data sever and a client device. In the data transmission system, a plurality of client devices are bus-connected through an optical fiber to a data server transmitting and receiving data as signal light. Each of the client devices has a client optical switch and is connected with a client access device. The client optical switch is structured with a thermal-lens forming element and a signal-light path shifting member. When any of the client devices forwards an access command to its own client access device, control light is irradiated from the client access device to the own client optical switch thus effecting a switchover. Thus, transmission data of from the data server is stored in a data storage of the relevant client device.Type: GrantFiled: February 22, 2007Date of Patent: June 1, 2010Assignees: National Institute of Advanced Industrial Science and Technology, Dainichiseika Color & Chemicals Mfg., Co., Ltd.Inventors: Takashi Hiraga, Nobutaka Tanigaki, Ichiro Ueno, Noritaka Yamamoto, Toshiko Mizokuro, Norio Tanaka
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Publication number: 20100112909Abstract: The invention provides a method of and an apparatus for abrading outer peripheral parts of a semiconductor wafer having a protective sheet adhesively attached to its surface where semiconductor elements are formed. The semiconductor wafer is held horizontally and an abrading tape held inside an abrading head is run and pressed against the outer peripheral part of the semiconductor wafer. The abrading tape has abrading particles attached to a base sheet by electrostatic spraying.Type: ApplicationFiled: February 17, 2009Publication date: May 6, 2010Applicant: NIHON MICRO COATING CO., LTD.Inventors: Naohiro Yamaguchi, Yasuo Matsumoto, Kenji Katoh, Takashi Hiraga
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Patent number: 7710114Abstract: An apparatus for producing a nuclear spin-polarized noble gas by spin-polarizing a noble gas in the presence of an optical pumping catalyst under application of magnetic field and laser light, including a cell having a thin reaction chamber, a gas introduction conduit connected in fluid communication with the reaction chamber for feeding the noble gas, a gas discharge conduit connected in fluid communication with the reaction chamber, a first gate valve having an outlet port connected to the gas introduction conduit and an inlet port adapted to be in fluid communication with a noble gas introduction line, a second gate valve having an inlet port connected to the gas discharge conduit and an outlet port, and a capillary tube removably connected to the outlet port of the second valve for recovering a nuclear spin-polarized noble gas produced in the reaction chamber. The apparatus may be directly connected to NMR or MRI.Type: GrantFiled: November 23, 2007Date of Patent: May 4, 2010Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Mineyuki Hattori, Takashi Hiraga, Noritaka Yamamoto
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Publication number: 20090301419Abstract: A decompression mechanism provided in a valve operating system configured to drive a valve for opening and closing a port, includes an accommodating member provided in the valve operating system; a decompression member which is accommodated in the accommodating member such that the decompression member is extendable and retractable, the decompression member being configured to extend from the valve operating system to press the valve to open the port in a compression stroke of the engine; and an insertion member which is inserted into the valve operating system, the insertion member being configured to be inserted through the accommodating member in a direction crossing a direction in which the decompression member is extendable and retractable.Type: ApplicationFiled: June 9, 2009Publication date: December 10, 2009Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventor: Takashi Hiraga
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Patent number: 7541051Abstract: A device which can produce polarized rare gas further improved in polarization rate with the gas kept flowing, which has flat sheet surfaces facing each other via a gap, and which comprises, a flat-surface flow cell unit for allowing a mixture gas of rare gas and optically-pumping catalyst to flow in the gap there through in one direction thereof, a laser beam irradiation unit for applying a laser beam toward at least one of the flat sheet surfaces to apply an excitation light into the flat-surface flow cell unit, and a magnetic field application unit for allowing a magnetic line of force to pass through the laser beam-applied flat sheet surface perpendicularly or almost perpendicularly; and a method using this device.Type: GrantFiled: February 17, 2003Date of Patent: June 2, 2009Assignees: National Institute of Advanced Industrial Science and Technology, Toyoko Kagaku Co., Ltd.Inventors: Mineyuki Hattori, Takashi Hiraga, Morio Murayama
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Patent number: 7511894Abstract: A flip-flop circuit of the present invention includes a first switch and a second switch which are connected in series to each other. The first switch includes: two input ports upon which light source light and signal light are incident; two output ports for outputting an optical output; and a thermal lens forming element for forming a thermal lens in a predetermined optical inputting condition. Although the second switch is composed in the same manner as that of the first switch, a relation between the wave-lengths to be utilized is inverted. When a state is changed from OFF to ON, a pulse signal is inputted for setting and one of the rays of output light of the second switch is fed-back to the first switch so as to maintain the state of ON. When the state is changed from ON to OFF, a pulse of additional signal light is inputted. Due to the foregoing, the two states of ON and OFF can be stably maintained.Type: GrantFiled: February 9, 2007Date of Patent: March 31, 2009Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., National Institute of Advanced Industrial Science and TechnologyInventors: Takashi Hiraga, Nobutaka Tanigaki, Noritaka Yamamoto, Toshiko Mizokuro, Ichiro Ueno, Norio Tanaka, Hiroshi Nagaeda, Noriyasu Shiga
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Patent number: 7509010Abstract: In an end surface closely arranged multicore optical fiber 200, at least two single-mode optical fibers 10 are, at one and the other ends of the individual single-mode optical fibers 10, closely arranged in parallel to each other and bound together, such that a center-center distance of adjacent single-mode optical fibers 10 is twice a core diameter of the single-mode optical fiber 10 or greater and 0.5 times a value obtained by subtracting the core diameter of the single-mode optical fiber from a core diameter of a multimode optical fiber to be connected or less, and that the remaining individual single-mode optical fibers 10 are individually independent from each other.Type: GrantFiled: September 14, 2007Date of Patent: March 24, 2009Assignees: National Institute of Advanced Industrial Science and Technology, Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Takashi Hiraga, Ichiro Ueno, Noritaka Yamamoto, Toshiko Mizokuro, Nobutaka Tanigaki, Norio Tanaka, Kuniaki Aoki, Masutaka Koyano, Kunio Ikuma
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Publication number: 20090022453Abstract: An optical deflection apparatus includes a signal light source configured to emit signal light having one or more wavelengths, a control light source configured to emit control light having a wavelength different from the wavelength of the signal light, a thermal lens forming optical element including a light absorption layer configured to transmit the signal light and selectively absorb the control light, and a beam-condensing unit configured to cause beam-condensation of the control light and the signal light at different convergence points in the light absorption layer.Type: ApplicationFiled: February 21, 2007Publication date: January 22, 2009Applicant: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTDInventors: Ichiro Ueno, Nobutaka Tanigaki, Noritaka Yamamoto, Toshiko Mizokuro, Takashi Hiraga, Norio Tanaka, Hiroshi Nagaeda, Noriyasu Shiga
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Publication number: 20080128602Abstract: An apparatus for producing a nuclear spin-polarized noble gas by spin-polarizing a noble gas in the presence of an optical pumping catalyst under application of magnetic field and laser light, including a cell having a thin reaction chamber, a gas introduction conduit connected in fluid communication with the reaction chamber for feeding the noble gas, a gas discharge conduit connected in fluid communication with the reaction chamber, a first gate valve having an outlet port connected to the gas introduction conduit and an inlet port adapted to be in fluid communication with a noble gas introduction line, a second gate valve having an inlet port connected to the gas discharge conduit and an outlet port, and a capillary tube removably connected to the outlet port of the second valve for recovering a nuclear spin-polarized noble gas produced in the reaction chamber. The apparatus may be directly connected to NMR or MRI.Type: ApplicationFiled: November 23, 2007Publication date: June 5, 2008Inventors: Mineyuki Hattori, Takashi Hiraga, Noritaka Yamamoto
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Patent number: 7382124Abstract: This apparatus for producing a hyperpolarized noble gas includes: a hyperpolarized noble gas generating cell in which a noble gas is subjected to an optical pumping in the presence of an alkali metal so as to generate a hyperpolarized noble gas; and a very fine capillary tube having an inside diameter of 0.1 to 1.25 mm which is positioned downstream from the hyperpolarized noble gas generating cell. This nuclear magnetic resonance spectrometer includes the above apparatus for producing a hyperpolarized noble gas and a nuclear magnetic resonance measuring instrument. This magnetic resonance imager includes the above apparatus for producing a hyperpolarized noble gas and a magnetic resonance image measuring instrument.Type: GrantFiled: May 16, 2006Date of Patent: June 3, 2008Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Mineyuki Hattori, Takashi Hiraga, Tatsuya Asanuma
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Publication number: 20080075458Abstract: An automatic circulation collection type data system is constructed by connecting a monitoring device and data collecting modules disposed at respective places through optical cables. The monitoring device transmits a trigger pulse for data collection through the optical cable to each data collecting module. An identification code is given to each data collecting module, and each data collecting module has an automatic circulation mechanism comprising first and second optical switches, a data collecting unit, and a controller 6 for performing various kinds of control for data collection. When receiving the trigger pulse from the monitoring device, the automatic circulation mechanism turns on the third switch and transmits the collected data through the optical cable to the monitoring device together with the identification code, and also transmits a trigger pulse through the optical cable to a next data collecting module.Type: ApplicationFiled: July 24, 2007Publication date: March 27, 2008Inventors: Takashi Hiraga, Ichiro Ueno, Noritaka Yamamoto, Toshiko Mizokuro, Nobutaka Tanigaki, Norio Tanaka, Kuniaki Aoki, Hirofumi Watanabe, Shiro Futaki
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Publication number: 20080069504Abstract: In an end surface closely arranged multicore optical fiber 200, at least two single-mode optical fibers 10 are, at one and the other ends of the individual single-mode optical fibers 10, closely arranged in parallel to each other and bound together, such that a center-center distance of adjacent single-mode optical fibers 10 is twice a core diameter of the single-mode optical fiber 10 or greater and 0.5 times a value obtained by subtracting the core diameter of the single-mode optical fiber from a core diameter of a multimode optical fiber to be connected or less, and that the remaining individual single-mode optical fibers 10 are individually independent from each other.Type: ApplicationFiled: September 14, 2007Publication date: March 20, 2008Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTDInventors: Takashi Hiraga, Ichiro Ueno, Noritaka Yamamoto, Toshiko Mizokuro, Nobutaka Tanigaki, Norio Tanaka, Kuniaki Aoki, Masutaka Koyano, Kunio Ikuma
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Patent number: 7334402Abstract: A catalytic converter-incorporated exhaust system is provided, which includes an exhaust tube through which exhaust gases emitted from an engine flow, and a muffler fluidly connected with a downstream end of the exhaust tube. This muffler includes a muffler casing having a plurality of expansion chambers defined therein, an exhaust introducing passage for introducing the exhaust gases from the exhaust tube into the expansion chambers in succession, two catalytic converters mounted in an downstream portion of the exhaust introducing passage and operable to substantially purify the exhaust gases, and an exhaust composition detecting sensor disposed outside the muffler casing in the exhaust introducing passage.Type: GrantFiled: May 31, 2006Date of Patent: February 26, 2008Assignee: Kawasaki Jukogyo Kabushiki KaishaInventor: Takashi Hiraga
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Patent number: 7301686Abstract: An optical signal optical path switching method comprising steps of using a thermal lens based on a distribution of refractive index produced reversibly caused by temperature increase generated in an area of the light-absorbing layer film of thermal lens forming devices 1, 2 and 3, that has absorbed control light beams 121, 122 and 123, and in the periphery thereof, causing the converged signal light beam to exit from the thermal lens forming device with an ordinary divergence angle when the control light beams 121, 122 and 123 have not been irradiated and no thermal lens has been formed, and causing the converged signal light beam to exit from the thermal lens forming device with a divergence angle larger than the ordinary divergence angle when the control light beams have been irradiated and a thermal lens has been formed, and causing the signal light beam to travel straight through holes 61, 62 and 63 of mirrors provided with the holes for the signal light beam to pass through when the control light beamsType: GrantFiled: February 17, 2005Date of Patent: November 27, 2007Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., National Institute of Advanced Industrial Science and TechnologyInventors: Norio Tanaka, Ichiro Ueno, Takashi Hiraga, Nobutaka Tanigaki, Toshiko Mizokuro, Noritaka Yamamoto, Hiroyuki Mochizuki
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Publication number: 20070263426Abstract: A flip-flop circuit of the present invention includes a first switch and a second switch which are connected in series to each other. The first switch includes: two input ports upon which light source light and signal light are incident; two output ports for outputting an optical output; and a thermal lens forming element for forming a thermal lens in a predetermined optical inputting condition. Although the second switch is composed in the same manner as that of the first switch, a relation between the wave-lengths to be utilized is inverted. When a state is changed from OFF to ON, a pulse signal is inputted for setting and one of the rays of output light of the second switch is fed-back to the first switch so as to maintain the state of ON. When the state is changed from ON to OFF, a pulse of additional signal light is inputted. Due to the foregoing, the two states of ON and OFF can be stably maintained.Type: ApplicationFiled: February 9, 2007Publication date: November 15, 2007Inventors: Takashi Hiraga, Nobutaka Tanigaki, Noritaka Yamamoto, Toshiko Mizokuro, Ichiro Ueno, Norio Tanaka, Hiroshi Nagaeda, Noriyasu Shiga
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Publication number: 20070201088Abstract: Provided is a data distribution system capable of transmitting and receiving a large capacity of data such as image data smoothly without incurring a delay over an optical fiber line at between the data sever and the client device. In the data transmission system, a plurality of client devices are bus-connected through an optical fiber to a data server that transmits and receives data as signal light, Each of the client devices has a client optical switch and connected with a client access device. The client optical switch is structured with a thermal-lens forming element and a signal-light path shifting member. When any of the client devices forwards an access command to its own client access device, control light is irradiated from the client access device to the own client optical switch thus effecting a switchover. Thus, transmission data of from the data server is stored in a data storage of the relevant client device.Type: ApplicationFiled: February 22, 2007Publication date: August 30, 2007Inventors: Takashi Hiraga, Nobutaka Tanigaki, Ichiro Ueno, Noritaka Yamamoto, Toshiko Mizokuro, Norio Tanaka
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Optically controlled optical-path-switching-type data distribution apparatus and distribution method
Publication number: 20070159682Abstract: Data 12010, 12020, etc. to be sent to each of client devices 1201, 1203, etc. from a data server device 1000 are, in a data communication unit 1100, first divided into electric signal packets by a data transmission/receipt control unit 1140, whereby an electric signal sequence tag is added to each electric signal packet, then converted into optical packets 12011, 12021, etc. by an optical signal transmitting unit 1120, and transmitted through an optical signal path 1110. At optical switch 1101, the optical paths of the packets are switched to optical signal paths 1111, 1112, etc. by the actions of optical destination tags 12111, 12121, etc. that are respectively synchronized with optical packets and irradiated by an optical signal transmitting unit 1120. At optical signal receiving units 1131, 1132, etc., the received optical packets are converted to electric signal packets, and reassembled to be original data 12010, 12020, etc.Type: ApplicationFiled: March 14, 2005Publication date: July 12, 2007Inventors: Norio Tanaka, Ichiro Ueno, Takashi Hiraga, Nobutaka Tanigaki, Toshiko Mizokuro, Noritaka Yamamoto, Hiroyuki Mochizuki -
Patent number: 7238460Abstract: Disclosed is an optical recording medium, comprising a polymer alloy forming a phase-separated domain structure of a coating object, and a volatile substance interacting with the polymer alloy. The volatile substance in a vapor state is deposited on the surface of specific phase-separated domain, and dispersedly infiltrated into the phase-separated domain. The phase-separated domain and the volatile substance chemically interact with each other. The optical recording medium is operable to perform optical recording by utilizing change in the transmittance, reflectance, refractive index or surface potential thereof in response to irradiation of ultraviolet light, visible light, or infrared light from outside. The present invention can provide an optical recording medium suitable for high-density recording in a wide wavelength range.Type: GrantFiled: September 4, 2003Date of Patent: July 3, 2007Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Toshiko Mizokuro, Takashi Hiraga, Noritaka Yamamoto, Hiroyuki Mochizuki, Shin Horiuchi, Norio Tanaka