Patents by Inventor Yasushi Murakami
Yasushi Murakami 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: 7858551Abstract: The present invention provides an electrode catalyst for electrochemical reaction, the electrode catalyst having: a conductive diamond particle having fine pores on a surface thereof; and a carbon-reactive catalyst metal in the fine pores, a process for producing the electrode catalyst, and an electrode.Type: GrantFiled: March 9, 2007Date of Patent: December 28, 2010Assignees: Permelec Electrode Ltd., Shinshu UniversityInventors: Yoshio Takasu, Yasushi Murakami, Wataru Sugimoto, Yuji Yamada, Masaharu Uno, Yoshinori Nishiki, Tsuneto Furuta
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Publication number: 20100164145Abstract: A process of manufacturing inorganic nanofibers, without using an organic polymer, using a highly reactive metal alkoxide such as titanium alkoxide or zirconium alkoxide, in particular, a process in which inorganic nanofibers can be stably produced over a long period, is provided. It is a process of manufacturing inorganic nanofibers by electrospinning using a sol solution containing an inorganic component as a main component, characterized in that the sol solution contains a metal alkoxide having a high reactivity and a salt catalyst, and that the salt catalyst is an amine compound having an N—N bond, an N—O bond, an N—C?N bond, or an N—C?S bond.Type: ApplicationFiled: December 23, 2009Publication date: July 1, 2010Applicants: SHINSHU UNIVERSITY, JAPAN VILENE COMPANY, LTD.Inventors: Yasushi MURAKAMI, Hisanao USAMI, Tomohiro NISHIKAWA, Takashi TARAO, Rie WATANABE, Masaaki KAWABE, Takashi NISHITANI
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Publication number: 20100130576Abstract: To provide a pharmaceutical composition containing a 2-nitroimidazole derivative, which has high solubility in an aqueous carrier and high stability. The pharmaceutical composition is characterized by containing 1-(1-hydroxymethyl-2,3-dihydroxypropyl)oxymethyl-2-nitroimidazole and creatinine, and containing creatinine of 0.001 to 1 part by mass with respect to 1 part by mass of 1-(1-hydroxymethyl-2,3-dihydroxypropyl)oxymethyl-2-nitroimidazole.Type: ApplicationFiled: April 16, 2008Publication date: May 27, 2010Applicant: POLA PHARMA INC.Inventors: Yasushi Murakami, Naoko Kobayashi, Azuma Nishio, Nobuo Kubota
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Publication number: 20100076042Abstract: To provide a pharmaceutical composition which can enhance the storage stability of 1-(1-hydroxymethyl-2,3-dihydroxypropyloxymethyl)-2-nitroimidazole without impairing the effect of the compound. The pharmaceutical composition includes 1-(1-hydroxymethyl-2,3-dihydroxypropyloxymethyl)-2-nitroimidazole, which is represented by formula (1): and a compound having chelating ability.Type: ApplicationFiled: January 17, 2008Publication date: March 25, 2010Applicant: POLA PHARMA INC.Inventors: Yasushi Murakami, Naoko Kobayashi, Azuma Nishio, Nobuo Kubota
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Patent number: 7514065Abstract: A layered ruthenic acid compound is converted to a protonic layered ruthenic acid hydrate, which is then converted to a layered alkylammonium-ruthenic acid intercalation compound to obtain a colloid containing ruthenic acid nanosheets having a thickness of 1 nm or smaller. Thereby, a ruthenic acid nanosheet is obtained.Type: GrantFiled: March 26, 2004Date of Patent: April 7, 2009Inventors: Yoshio Takasu, Yasushi Murakami, Wataru Sugimoto
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Publication number: 20090088958Abstract: There is provided a method for starting a spark ignition engine having multiple cylinders. The method may comprise supplying air and fuel for restart into a first cylinder before said engine completely stops, and igniting the mixture of said air and said fuel in said first cylinder in response to an engine restart request, wherein said first cylinder is on an expansion stroke when said engine stops. The method may also include, after said piston in said first cylinder starts moving, injecting fuel into a second cylinder that is on a compression stroke when said engine stops, on a compression stroke where a piston of said second cylinder is moving in a direction opposite to an operative direction of said piston in said first cylinder.Type: ApplicationFiled: November 25, 2008Publication date: April 2, 2009Applicant: Mazda Motor CorporationInventors: Noriyuki Ota, Masahiko Fujimoto, Yasushi Murakami, Keiji Araki, Kazuya Yokota
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Patent number: 7496384Abstract: There is disclosed a radio communication system in which a constitution of a base station and further a control station can be simplified. A radio communication system according to the present invention converts a received signal received by a plurality of antenna elements in a base station to a signal of different frequency band, and then conflates the converted signal in order to generate sub-carrier wave multiplex signal. The signal is converted to an optical signal, and then the optical signal is transmitted to a control station via an optical fiber. Or the control station performs weighting to phase of the transmitted signal transmitted from a plurality of antennas of a base station, and then performs frequency conversion to different frequency band, and then conflates the converted signal in order to generate the sub-carrier wave multiplex signal. The signal is converted to an optical signal, and then an optical signal is transmitted to the base station side via the optical fiber.Type: GrantFiled: November 29, 2005Date of Patent: February 24, 2009Assignee: Kabushiki Kaisha ToshibaInventors: Ichiro Seto, Yasushi Murakami, Osamu Shibata, Hidehiro Matsuoka
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Patent number: 7461621Abstract: There is provided a method of starting a spark ignition engine having multiple cylinders. The method comprises supplying air and fuel for restart into a first cylinder before the engine completely stops, and igniting the mixture of the air and the fuel in the first cylinder in response to an engine start request. In accordance with the method, by supplying air and fuel into the first cylinder before the engine completely stops, the mixture of air and fuel in the first cylinder may be homogeneous at the time of the engine start request. Also, there may be less mixture turbulence and combustion may propagate better within the cylinder. These conditions may reduce the rate of combustion in the first cylinder after a start request is initiated. The slower combustion rate may decrease temperature of the combusted gas while the cylinder wall temperature is relatively low because the engine has stopped.Type: GrantFiled: September 19, 2006Date of Patent: December 9, 2008Assignee: Mazda Motor CorporationInventors: Noriyuki Ota, Masahiko Fujimoto, Yasushi Murakami, Keiji Araki, Kazuya Yokota
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Patent number: 7319803Abstract: An optical fiber made of quartz or glass and having a core and a cladding includes a microporous silica solution applied to an outer peripheral surface thereof, which is synthesized from a mixture of silicon alcoxide, active alcohol for facilitating hydrolytic action, alcohol, and water, by means of the sol-gel process, followed by baking to form a thin film of microporous silica made chiefly of silicon. Microporous of the thin film of microporous silica have function of cushioning to cushion and restrain that micro cracks much existing in the cladding undergo growth when the optical fiber is bent so that the optical fiber is likely to be broken. And the thin film of microporous silica which made chiefly of silicon has high heat-resistant properties similarly to the optical fiber itself. Accordingly, a heat-resistant optical fiber very excellent in heat-resistant properties is provided.Type: GrantFiled: February 9, 2006Date of Patent: January 15, 2008Assignee: Totoku Electric Co., Ltd.Inventors: Tomio Kaise, Asuka Nakayama, Hidehiko Shimizu, Tatuo Yamaguchi, Masanori Nonomura, Yasushi Murakami
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Publication number: 20070212594Abstract: The present invention provides an electrode catalyst for electrochemical reaction, the electrode catalyst having: a conductive diamond particle having fine pores on a surface thereof; and a carbon-reactive catalyst metal in the fine pores, a process for producing the electrode catalyst, and an electrode.Type: ApplicationFiled: March 9, 2007Publication date: September 13, 2007Applicants: PERMELEC ELECTRODE LTD., Shinshu UniversityInventors: Yoshio Takasu, Yasushi Murakami, Wataru Sugimoto, Yuji Yamada, Masaharu Uno, Yoshinori Nishiki, Tsuneto Furuta
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Publication number: 20070062476Abstract: There is provided a method of starting a spark ignition engine having multiple cylinders. The method comprises supplying air and fuel for restart into a first cylinder before the engine completely stops, and igniting the mixture of the air and the fuel in the first cylinder in response to an engine start request. In accordance with the method, by supplying air and fuel into the first cylinder before the engine completely stops, the mixture of air and fuel in the first cylinder may be homogeneous at the time of the engine start request. Also, there may be less mixture turbulence and combustion may propagate better within the cylinder. These conditions may reduce the rate of combustion in the first cylinder after a start request is initiated. The slower combustion rate may decrease temperature of the combusted gas while the cylinder wall temperature is relatively low because the engine has stopped.Type: ApplicationFiled: September 19, 2006Publication date: March 22, 2007Applicant: Mazda Motor CorporationInventors: Noriyuki Ota, Masahiko Fujimoto, Yasushi Murakami, Keiji Araki, Kazuya Yokota
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Publication number: 20060294170Abstract: A diversity receiver device includes N antennas to receive OFDM signals, N digital filters to filter the signals received by the N antennas in order to reduce delay spread, K (K?N) beamforming units configured to subject the filtered signals to a beamforming process by using combining weights, an eigen-decomposition unit configured to subject the filtered signals to eigen-decomposition to generate N eigenvalues, a weight setting unit configured to select K eigenvalues in descending order from the generated N eigenvalues in order to set eigenvectors corresponding to the K eigenvalues to the beamforming units as the combing weight, respectively, K FFT units configured to subject the output signals of the beamforming units to fast Fourier transformation to output FFT signals, and a diversity combining unit configured to combine the FFT signals.Type: ApplicationFiled: March 21, 2006Publication date: December 28, 2006Inventors: Hidehiro Matsuoka, Hideo Kasami, Makoto Tsuruta, Yasushi Murakami
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Publication number: 20060288740Abstract: To the outer peripheral surface of an optical fiber made of quartz or glass and having a core and a cladding is applied a microporous silica solution, which is synthesized from a mixture of silicon alcoxide, active alcohol for facilitating hydrolytic action, alcohol, and water, by means of the sol-gel process, followed by baking to form a thin film of microporous silica made chiefly of silicon. Microporous of the thin film of microporous silica have function of cushioning to cushion and restrain that micro cracks much existing in the cladding undergo growth when the optical fiber is bent so that the optical fiber is likely to be broken. And the thin film of microporous silica which made chiefly of silicon has high heat-resistant properties similarly to the optical fiber itself. Accordingly, a heat-resistant optical fiber very excellent in heat-resistant properties is provided.Type: ApplicationFiled: July 20, 2006Publication date: December 28, 2006Applicant: TOTOKU ELECTRIC CO., LTD.Inventors: Tomio Kaise, Asuka Nakayama, Hidehiko Shimizu, Tatuo Yamaguchi, Masanori Nonomura, Yasushi Murakami
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Publication number: 20060194453Abstract: A transparent amorphous silicon dioxide film containing many fine voids, characterized in that the refractive index (for light at ?=500 nm) is in the range of 1.01 to 1.40 and that 80 vol. % or more of the fine voids have a diameter of 5 nm or less, has a low refractive index and excellent physical strength such as high scratch resistance, so that it is advantageously employable as an optical film of an optical device for various uses.Type: ApplicationFiled: March 25, 2004Publication date: August 31, 2006Inventors: Yasushi Murakami, Masayuki Harano, Yoshio Takasu, Yoshio Taniguchi
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Publication number: 20060140566Abstract: To the outer peripheral surface of an optical fiber made of quartz or glass and having a core and a cladding is applied a microporous silica solution, which is synthesized from a mixture of silicon alcoxide, active alcohol for facilitating hydrolytic action, alcohol, and water, by means of the sol-gel process, followed by baking to form a thin film of microporous silica made chiefly of silicon. Microporous of the thin film of microporous silica have function of cushioning to cushion and restrain that micro cracks much existing in the cladding undergo growth when the optical fiber is bent so that the optical fiber is likely to be broken. And the thin film of microporous silica which made chiefly of silicon has high heat-resistant properties similarly to the optical fiber itself. Accordingly, a heat-resistant optical fiber very excellent in heat-resistant properties is provided.Type: ApplicationFiled: February 9, 2006Publication date: June 29, 2006Applicant: TOTOKU ELECTRIC CO., LTD.Inventors: Tomio Kaise, Asuka Nakayama, Hidehiko Shimizu, Tatuo Yamaguchi, Masanori Nonomura, Yasushi Murakami
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Patent number: 7043271Abstract: There is disclosed a radio communication system in which a constitution of a base station and further a control station can be simplified. A radio communication system according to the present invention converts a received signal received by a plurality of antenna elements in a base station to a signal of different frequency band, and then conflates the converted signal in order to generate sub-carrier wave multiplex signal. The signal is converted to an optical signal, and then the optical signal is transmitted to a control station via an optical fiber. Or the control station performs weighting to phase of the transmitted signal transmitted from a plurality of antennas of a base station, and then performs frequency conversion to different frequency band, and then conflates the converted signal in order to generate the sub-carrier wave multiplex signal. The signal is converted to an optical signal, and then an optical signal is transmitted to the base station side via the optical fiber.Type: GrantFiled: September 12, 2000Date of Patent: May 9, 2006Assignee: Kabushiki Kaisha ToshibaInventors: Ichiro Seto, Yasushi Murakami, Osamu Shibata, Hidehiro Matsuoka
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Publication number: 20060079290Abstract: There is disclosed a radio communication system in which a constitution of a base station and further a control station can be simplified. A radio communication system according to the present invention converts a received signal received by a plurality of antenna elements in a base station to a signal of different frequency band, and then conflates the converted signal in order to generate sub-carrier wavemultiplex signal. The signal is converted to an optical signal, and then the optical signal is transmitted to a control station via an optical fiber. Or the control station performs weighting to phase of the transmitted signal transmitted from a plurality of antennas of a base station, and then performs frequency conversion to different frequency band, and then conflates the converted signal in order to generate the sub-carrier wave multiplex signal. The signal is converted to an optical signal, and then an optical signal is transmitted to the base station side via the optical fiber.Type: ApplicationFiled: November 29, 2005Publication date: April 13, 2006Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Ichiro Seto, Yasushi Murakami, Osamu Shibata, Hidehiro Matsuoka
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Publication number: 20050261036Abstract: In a radio equipment of portable type, the impedance of an antenna is optimized by adjusting a matching circuit which has the adjustment function and is connected to an antenna, based on a reflection phase sent back from the antenna, outputted from a reflection phase detector, and a current supplied to a transmitter-receiver which generates a transmitting signal.Type: ApplicationFiled: July 18, 2005Publication date: November 24, 2005Inventors: Shu-ichi Sekine, Takayoshi Itoh, Yuji Iseki, Naoko Ono, Keiichi Yamaguchi, Hiroyuki Kayano, Akihiro Tsujimura, Kazuhiro Inoue, Noriaki Odachi, Yasushi Murakami
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Patent number: 6934557Abstract: In a radio equipment of portable type, the impedance of an antenna is optimized by adjusting a matching circuit which has the adjustment function and is connected to an antenna, based on a reflection phase sent back from the antenna, outputted from a reflection phase detector, and a current supplied to a transmitter-receiver which generates a transmitting signal.Type: GrantFiled: September 27, 2002Date of Patent: August 23, 2005Assignee: Kabushiki Kaisha ToshibaInventors: Shu-ichi Sekine, Takayoshi Itoh, Yuji Iseki, Naoko Ono, Keiichi Yamaguchi, Hiroyuki Kayano, Akihiro Tsujimura, Kazuhiro Inoue, Noriaki Odachi, Yasushi Murakami
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Patent number: 6911944Abstract: An antenna apparatus is constituted by first, second, third, and fourth wire antenna elements and a connection element. The sum of the lengths of the first, second, and fourth wire antenna elements is ¼ the wavelength corresponding to a series-resonance frequency of the first, second, and fourth wire antenna elements. The sum of the lengths of the second, third, and fourth wire antenna elements is ½ the wavelength corresponding to a parallel-resonance frequency of the second, third, and fourth wire antenna elements. The sum of the lengths of the first and third wire antenna elements is ¼ the wavelength corresponding to a series-resonance frequency of the first and third wire antenna elements. The parallel-resonance frequency is higher than the series-resonance frequency of the first, second, and fourth wire antenna elements and lower than the series-resonance frequency of the first and third wire antenna elements.Type: GrantFiled: October 23, 2003Date of Patent: June 28, 2005Assignee: Kabushiki Kaisha ToshibaInventors: Syuichi Sekine, Takayoshi Ito, Yasushi Murakami, Hiroki Shoki