Patents by Inventor Eiichi Hosoya
Eiichi Hosoya 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: 10389452Abstract: A coherent optical reception device includes a local oscillation laser that supplies laser light, a coherent optical reception front-end unit that receives a multi-level modulated optical signal, demodulates the optical signal on the basis of the laser light, and converts a demodulated optical signal into an electrical analog signal, an analog-to-digital converter that converts the analog signal into a digital signal, a compensation unit that compensates for an influence of dispersion due to a wavelength or a polarized wave of the optical signal and recovers a carrier phase of the digital signal, a constellation distortion compensation unit that compensates for constellation distortion of the multi-level modulation included in the digital signal in which an influence of dispersion is compensated for by the compensation unit, and an error correction decoding unit that performs error correction of the digital signal in which the constellation distortion is compensated for.Type: GrantFiled: October 17, 2016Date of Patent: August 20, 2019Assignees: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, NTT Electronics CorporationInventors: Kengo Horikoshi, Mitsuteru Yoshida, Seiji Okamoto, Eiichi Hosoya, Etsushi Yamazaki, Yasuharu Onuma, Tomohiro Takamuku, Naoki Miura, Sadayuki Yasuda
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Publication number: 20190013876Abstract: A coherent optical reception device includes a local oscillation laser that supplies laser light, a coherent optical reception front-end unit that receives a multi-level modulated optical signal, demodulates the optical signal on the basis of the laser light, and converts a demodulated optical signal into an electrical analog signal, an analog-to-digital converter that converts the analog signal into a digital signal, a compensation unit that compensates for an influence of dispersion due to a wavelength or a polarized wave of the optical signal and recovers a carrier phase of the digital signal, a constellation distortion compensation unit that compensates for constellation distortion of the multi-level modulation included in the digital signal in which an influence of dispersion is compensated for by the compensation unit, and an error correction decoding unit that performs error correction of the digital signal in which the constellation distortion is compensated for.Type: ApplicationFiled: October 17, 2016Publication date: January 10, 2019Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, NTT Electronics CorporationInventors: Kengo HORIKOSHI, Mitsuteru YOSHIDA, Seiji OKAMOTO, Eiichi HOSOYA, Etsushi YAMAZAKI, Yasuharu ONUMA, Tomohiro TAKAMUKU, Naoki MIURA, Sadayuki YASUDA
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Patent number: 7452842Abstract: A porous preform (carrier) is soaked in an impregnating solution, which contains both of a catalytic-activity constituent, e.g. Ni and/or Co, and a carrier-forming constituent, e.g. Mg, Al, Zr, Ti and/or Ca, so as to simultaneously infiltrate the catalytic-activity and carrier-forming constituents into the porous preform. The impregnated preform is dried, calcined at a temperature of 700° C. or higher and then activated at a temperature of 500° C. or higher, whereby fine catalytic-activity particles are distributed on a surface of the porous carrier with high dispersion. Due to finely-distributed catalytic-activity particles, the surface of the catalyst is prevented from deposition of carbonaceous matters during reformation of hydrocarbon and held in an active state over a long term.Type: GrantFiled: October 3, 2003Date of Patent: November 18, 2008Assignee: Japan Oil, Gas and Metals National CorporationInventors: Toshiya Wakatsuki, Kiyoshi Inaba, Hideyuki Nakajima, Eiichi Hosoya
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Patent number: 7429366Abstract: A solution of a chromium compound is impregnated into a silica-alumina carrier made of alumina and containing 1 to 5 weight % of silica relative to the weight of the carrier, thereby to obtain a decomposing catalyst carrying 10 to 15 weight % of chromium oxide relative to the weight of the catalyst in terms of Cr2O3. By contacting mixed gas obtained through partial oxidation of heavy oil and/or coal with the decomposing catalyst, COS and HCN contained in the mixed gas are decomposed/removed. In this case, transition of alumina into boehmite can be suppressed owing to coexistence of silica and chromium oxide, so that COS and HCN can be decomposed by highly active catalytic reactions over a long time.Type: GrantFiled: October 30, 2002Date of Patent: September 30, 2008Assignees: JGC Corporation, Catalysts & Chemicals Industries Co., Ltd, Sud-Chemie Catalysts Japan, Inc.Inventors: Satomi Ishigaki, legal representative, Aya Ishigaki, legal representative, Akane Ishigaki, legal representative, Tatsuya Ishigaki, legal representative, Eiichi Hosoya, Kazutaka Egami, Shinya Ishigaki
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Publication number: 20050084435Abstract: A solution of a chromium compound is impregnated into a silica-alumina carrier made of alumina and containing 1 to 5 weight % of silica relative to the weight of the carrier, thereby to obtain a decomposing catalyst carrying 10 to 15 weight % of chromium oxide relative to the weight of the catalyst in terms of Cr2O3. By contacting mixed gas obtained through partial oxidation of heavy oil and/or coal with the decomposing catalyst, COS and HCN contained in the mixed gas are decomposed/removed. In this case, transition of alumina into boehmite can be suppressed owing to coexistence of silica and chromium oxide, so that COS and HCN can be decomposed by highly active catalytic reactions over a long time.Type: ApplicationFiled: October 30, 2002Publication date: April 21, 2005Inventors: Shinya Ishigaki, Satomi Ishigaki, Aya Ishigaki, Akane Ishigaki, Tatsuya Ishigaki, Eiichi Hosoya, Kazutaka Egami
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Publication number: 20040067848Abstract: A porous preform (carrier) is soaked in an impregnating solution, which contains both of a catalytic-activity constituent, e.g. Ni and/or Co, and a carrier-forming constituent, e.g. Mg, Al, Zr, Ti and/or Ca, so as to simultaneously infiltrate the catalytic-activity and carrier-forming constituents into the porous preform. The impregnated preform is dried, calcined at a temperature of 700° C. or higher and then activated at a temperature of 500° C. or higher, whereby fine catalytic-activity particles are distributed on a surface of the porous carrier with high dispersion. Due to finely-distributed catalytic-activity particles, the surface of the catalyst is prevented from deposition of carbonaceous matters during reformation of hydrocarbon and held in an active state over a long term.Type: ApplicationFiled: October 3, 2003Publication date: April 8, 2004Applicants: Japan National Oil Corporation, Japan Petroleum Exploration Co., Ltd.Inventors: Toshiya Wakatsuki, Kiyoshi Inaba, Hideyuki Nakajima, Eiichi Hosoya
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Patent number: 6274109Abstract: Carbonyl sulfide and/or hydrogen cyanide contained in a mixed gas are/is converted by contacting the mixed gas with an alkalized chromium oxide-aluminum oxide catalyst in the presence of steam, wherein the mixed gas and the steam at a volume ratio of 0.05≦steam/mixed gas≦0.3 are contacted with the alkalized chromium oxide-aluminum oxide catalyst at a gas hourly space velocity no less than 2000 h−1 at a temperature in the range of 150° C. through 250° C. In this case, the alkalized chromium oxide-aluminum oxide catalyst is set to have a grain size in the range of 1 mm through 4.5 mm. With this arrangement, since the surface area of a catalyst can be increased to a certain degree, the activity of the catalyst is increased to achieve the high processing speed, while since generation of a side reaction can be suppressed, lowering of the conversion rate of COS and/or HCN caused by the side reaction can be suppressed.Type: GrantFiled: June 16, 2000Date of Patent: August 14, 2001Assignees: JGC Corporation, Sued-Chemie Nissan Catalysts, Inc.Inventors: Hideyuki Matsumoto, Shinya Ishigaki, Eiichi Hosoya
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Patent number: 5724493Abstract: The positions where back-projection lines from a plurality of images pass through a predetermined voxel slice of a 3D space are calculated. Letting a predetermined one of the plurality of images be defined as a basic image and the other remaining images as reference images, information about back-projection lines from the basic image is stored in a basic back-projection line information storage part and information about the back-projection lines from the reference images are stored, as information associated with voting, in a voting information storage part. A count is taken of reference back-projection lines which pass through the same passing position of each basic back-projection line, and this count value is used to update the information about the basic back-projection line. After execution of each processing in all voxel slices of the 3D space, the information about the basic back-projection line information is read out of the basic back-projection line information storage part.Type: GrantFiled: December 12, 1995Date of Patent: March 3, 1998Assignee: Nippon Telegraph & Telephone CorporationInventors: Eiichi Hosoya, Takeshi Ogura, Mamoru Nakanishi