Patents by Inventor Hiroyoshi Ishii
Hiroyoshi Ishii 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: 20150372760Abstract: An optical transceiver is configured to use, as an electric signal, a digital modulation signal having a predetermined bit rate. The optical transceiver includes a case having a space for storing a component therein and a resistor being arranged between upper and lower surfaces of the space and having conductance of from 1 S/m to 1,000 S/m. The space has a height equal to or less than a wavelength in a free space of an electromagnetic wave of a frequency corresponding to the predetermined bit rate. At least a part of the height of the space is larger than a half of the wavelength. The height of the space is smaller than a width of the space. The width of the space is smaller than a depth of the space.Type: ApplicationFiled: June 19, 2015Publication date: December 24, 2015Inventors: Osamu KAGAYA, Fumihide MAEDA, Hiroyoshi ISHII, Koichi OMORI, Koji TAKEGUCHI
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Patent number: 9200559Abstract: Provided is a combustion chamber applied in a gas engine including: a main combustion chamber including, at a central portion of its ceiling, an auxiliary combustion chamber; and a piston. A peripheral portion of a top surface of the piston is a flat surface. A raised portion, which has a curved surface and which is a solid of revolution, is formed at a central portion of the top surface, the raised portion being joined to the flat surface of the peripheral portion via a curved surface. When the piston is positioned at a top dead center, nozzle holes of the auxiliary combustion chamber jet out flame jets to a portion at which the raised portion of the top surface of the piston and the flat surface of the peripheral portion of the top surface of the piston are joined together.Type: GrantFiled: December 27, 2010Date of Patent: December 1, 2015Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Hiroyoshi Ishii, Tetsuo Tokuoka
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Patent number: 9140229Abstract: A knocking control system comprises a knocking determiner device for determining whether or not knocking with a predetermined intensity or higher has occurred in a cylinder of a gas engine in each cycle; an integration variable calculator which adds to an integration variable CT when the knocking determiner device determines that the knocking with the predetermined intensity or higher has occurred, and subtracts from the integration variable CT when the knocking determiner determines that the knocking with the predetermined intensity or higher has not occurred; and a main controller for reducing a power output of the cylinder if the integration variable CT is not less than a threshold.Type: GrantFiled: September 1, 2009Date of Patent: September 22, 2015Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Tsukasa Imamura, Tomohiko Sugimoto, Tetsuo Tokuoka, Hiroyoshi Ishii
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Patent number: 8783226Abstract: A knocking control system for a gas engine of the present invention, being configured to calculate a knocking occurrence ratio (SEV) which is a ratio of a cycle number of cycles in which a predetermined knocking occurs for a period of the cycles of the predetermined cycle number, to the predetermined cycle number, decide a target value of an ignition timing of the ignition device based on a deviation (?SEV) between an occurrence ratio delay calculation value (SEVAVE) obtained by performing delay calculation of the knocking occurrence ratio and a predetermined occurrence ratio target value (SEVSET), and drive the ignition device so that the ignition timing reaches a command value (IGN) decided according to the target value.Type: GrantFiled: September 17, 2009Date of Patent: July 22, 2014Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Tsukasa Imamura, Tomohiko Sugimoto, Tetsuo Tokuoka, Hiroyoshi Ishii
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Publication number: 20140140665Abstract: An optical module includes: an optical module main body including an optical connector to which a communication cable transferring optical signal is connected, and a terminal portion on which a plurality of terminal pads for transmitting and receiving an electric signal for communication using the optical signal are arranged; a lead array including a lead fixing portion that retains a plurality of metal leads arranged in parallel on and protruding from the lead fixing portion and electrically connected to the plurality of terminal pads of the terminal portion; and a flexible printed circuit including a plurality of holes through which the plurality of metal leads penetrate, and wires electrically connected to the metal leads.Type: ApplicationFiled: November 4, 2013Publication date: May 22, 2014Applicant: OCLARO JAPAN, INC.Inventors: Mitsuo AKASHI, Hiroki IRIE, Hiroyoshi ISHII, Michihide SASADA
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Publication number: 20140022734Abstract: An optical module includes: an optical receiving module 101 provided with a plurality of leads 105 for transmitting an electrical signal at 15 Gbit/s or more; a printed circuit board 103 provided with a pad 106 that is connected with the plurality of leads 105 by solder; and a metal thin plate 102 that is provided between the printed circuit board 103 and the optical receiving module 101 when the optical receiving module 101 is mounted on the printed circuit board 103. The thickness of the metal thin plate 102 is defined in such a manner that a distance between the plurality of leads 105 and the pad 106 is in the range of 50 to 500 ?m after the optical receiving module. 101 is mounted on the printed circuit board 103.Type: ApplicationFiled: June 4, 2013Publication date: January 23, 2014Inventors: Osamu YAMADA, Mitsuo AKASHI, Shinichi OKAYAMA, Osamu KAGAYA, Hiroyoshi ISHII
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Publication number: 20130019837Abstract: Provided is a combustion chamber applied in a gas engine including: a main combustion chamber including, at a central portion of its ceiling, an auxiliary combustion chamber; and a piston. A peripheral portion of a top surface of the piston is a flat surface. A raised portion, which has a curved surface and which is a solid of revolution, is formed at a central portion of the top surface, the raised portion being joined to the flat surface of the peripheral portion via a curved surface. When the piston is positioned at a top dead center, nozzle holes of the auxiliary combustion chamber jet out flame jets to a portion at which the raised portion of the top surface of the piston and the flat surface of the peripheral portion of the top surface of the piston are joined together.Type: ApplicationFiled: December 27, 2010Publication date: January 24, 2013Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Hiroyoshi Ishii, Tetsuo Tokuoka
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Publication number: 20130000598Abstract: A gas engine is configured to inject a combustion gas from an auxiliary combustion chamber through a plurality of nozzles, through which the auxiliary combustion chamber and a main combustion chamber are in communication with each other, so as to ignite a fuel in the main combustion chamber. An opening edge, at the auxiliary combustion chamber side, of each of the plurality of nozzles is formed to have a curved surface. This structure makes it possible to maintain stable combustion in the main combustion chamber while preventing degradation in combustion performance.Type: ApplicationFiled: December 27, 2010Publication date: January 3, 2013Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Tetsuo Tokuoka, Hiroyoshi Ishii
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Patent number: 8204351Abstract: Provided is an optical module including: an optical assembly incorporating a light emitting or receiving device for converting one of an electrical signal and an optical signal into another of the electrical signal and the optical signal; a circuit board electrically connected to the optical assembly; an optical fiber optically connected to the optical assembly; a tray for winding the optical fiber therein and pulling out the optical fiber therefrom; and a case receiving the optical assembly, the circuit board, the optical fiber, and the tray. In the optical module, the tray is fixed with respect to the case so as to be reciprocatingly movable only within a restricted range, and the tray is moved from a position to another position within the restricted range so as to be moved away from an electrical connection section between the optical assembly and the circuit board.Type: GrantFiled: April 15, 2010Date of Patent: June 19, 2012Assignee: Opnext Japan, Inc.Inventors: Koichi Omori, Hiroyoshi Ishii, Toshikazu Otake
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Patent number: 8107823Abstract: In an optical transmission module having a communication module which is freely movable in a case, when a tensile force is generated on an optical cable after connection of an optical transmission module, optical coupling surface and an optical axis center follow each other and thus stable optical transmission can be constantly performed.Type: GrantFiled: December 13, 2006Date of Patent: January 31, 2012Assignee: Opnext Japan, Inc.Inventors: Hiroyoshi Ishii, Toshikazu Ohtake, Osamu Yamada, Fumihide Maeda, Satoshi Motohiro
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Publication number: 20110259298Abstract: A knocking control system for a gas engine of the present invention, being configured to calculate a knocking occurrence ratio (SEV) which is a ratio of a cycle number of cycles in which a predetermined knocking occurs for a period of the cycles of the predetermined cycle number, to the predetermined cycle number, decide a target value of an ignition timing of the ignition device based on a deviation (?SEV) between an occurrence ratio delay calculation value (SEVAVE) obtained by performing delay calculation of the knocking occurrence ratio and a predetermined occurrence ratio target value (SEVSET), and drive the ignition device so that the ignition timing reaches a command value (IGN) decided according to the target value.Type: ApplicationFiled: September 17, 2009Publication date: October 27, 2011Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Tsukasa Imamura, Tomohiko Sugimoto, Tetsuo Tokuoka, Hiroyoshi Ishii
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Publication number: 20110224889Abstract: A knocking control system comprises a knocking determiner device for determining whether or not knocking with a predetermined intensity or higher has occurred in a cylinder of a gas engine in each cycle; an integration variable calculator which adds to an integration variable CT when the knocking determiner device determines that the knocking with the predetermined intensity or higher has occurred, and subtracts from the integration variable CT when the knocking determiner determines that the knocking with the predetermined intensity or higher has not occurred; and a main controller for reducing a power output of the cylinder if the integration variable CT is not less than a threshold.Type: ApplicationFiled: September 1, 2009Publication date: September 15, 2011Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Tsukasa Imamura, Tomohiko Sugimoto, Tetsuo Tokuoka, Hiroyoshi Ishii
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Publication number: 20110214649Abstract: A control system for a gas engine including a controller being configured to execute load equalization control such that a fuel feed amount corresponding to a higher-temperature cylinder of a first predetermined number which is selected to include a highest exhaust gas temperature, among cylinders which are controlled targets, is reduced, and a fuel feed amount corresponding to a lower-temperature cylinder of a second predetermined number which is selected to include a lowest exhaust gas temperature, among the cylinders which are the controlled targets, is increased; and a sum of the first predetermined number and the second predetermined number being less than the number of all of the plurality of cylinders so that there is a cylinder whose fuel feed amount is not changed.Type: ApplicationFiled: September 17, 2009Publication date: September 8, 2011Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Tsukasa Imamura, Tomohiko Sugimoto, Tetsuo Tokuoka, Hiroyoshi Ishii
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Publication number: 20110026893Abstract: Provided is an optical module including: an optical assembly incorporating a light emitting or receiving device for converting one of an electrical signal and an optical signal into another of the electrical signal and the optical signal; a circuit board electrically connected to the optical assembly; an optical fiber optically connected to the optical assembly; a tray for winding the optical fiber therein and pulling out the optical fiber therefrom; and a case receiving the optical assembly, the circuit board, the optical fiber, and the tray. In the optical module, the tray is fixed with respect to the case so as to be reciprocatingly movable only within a restricted range, and the tray is moved from a position to another position within the restricted range so as to be moved away from an electrical connection section between the optical assembly and the circuit board.Type: ApplicationFiled: April 15, 2010Publication date: February 3, 2011Inventors: Koichi OMORI, Hiroyoshi Ishii, Toshikazu Otake
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Patent number: 7766679Abstract: There is provided a pluggable module having grooves, on lateral faces, for latching with a cage and engaging portions for detachment, wherein the module body is detached from the cage by using a module detaching unit which is inserted along the grooves and which locks the engaging portions of the module body in the length direction. Further, there is provided a detaching jig including: latch release portions which are inserted between the pluggable module and the cage; lock portions which allow the pluggable module to be locked in the detaching direction; and a handle portion for detaching the pluggable module from the cage.Type: GrantFiled: January 25, 2008Date of Patent: August 3, 2010Assignee: Opnext Japan, Inc.Inventors: Futoshi Endou, Hiroyoshi Ishii, Toshikazu Ohtake, Satoshi Motohiro
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Patent number: 7703994Abstract: Provided is a metal casing structure capable of avoiding a cavity resonance at 10 GHz and 20 GHz by controlling an eigenmode frequency in an inner space of a casing without involving an increase in cost, and a 10 Gbit/s optical transceiver module which achieves reduction in unnecessary electromagnetic waves and cost. In the optical transceiver module, a metal casing having a cavity therein is formed by an upper casing (100) and a lower casing (101), a metal partition wall (103, 104) is provided on at least one of the upper casing (100) and the lower casing (101) near a central portion of the casing in a direction parallel to a direction connecting a front and a rear thereof, and a length of a gap between the partition wall (103, 104) and a printed circuit board (102) is adjusted.Type: GrantFiled: December 18, 2008Date of Patent: April 27, 2010Assignee: Opnext Japan, Inc.Inventors: Osamu Kagaya, Hiroyoshi Ishii, Yasushi Kitajima
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Publication number: 20090180784Abstract: Provided is a metal casing structure capable of avoiding a cavity resonance at 10 GHz and 20 GHz by controlling an eigenmode frequency in an inner space of a casing without involving an increase in cost, and a 10 Gbit/s optical transceiver module which achieves reduction in unnecessary electromagnetic waves and cost. In the optical transceiver module, a metal casing having a cavity therein is formed by an upper casing (100) and a lower casing (101), a metal partition wall (103, 104) is provided on at least one of the upper casing (100) and the lower casing (101) near a central portion of the casing in a direction parallel to a direction connecting a front and a rear thereof, and a length of a gap between the partition wall (103, 104) and a printed circuit board (102) is adjusted.Type: ApplicationFiled: December 18, 2008Publication date: July 16, 2009Inventors: Osamu Kagaya, Hiroyoshi Ishii, Yasushi Kitajima
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Publication number: 20080188104Abstract: There is provided a pluggable module having grooves, on lateral faces, for latching with a cage and engaging portions for detachment, wherein the module body is detached from the cage by using a module detaching unit which is inserted along the grooves and which locks the engaging portions of the module body in the length direction. Further, there is provided a detaching jig including: latch release portions which are inserted between the pluggable module and the cage; lock portions which allow the pluggable module to be locked in the detaching direction; and a handle portion for detaching the pluggable module from the cage.Type: ApplicationFiled: January 25, 2008Publication date: August 7, 2008Inventors: Futoshi Endou, Hiroyoshi Ishii, Toshikazu Ohtake, Satoshi Motohiro
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Publication number: 20080008429Abstract: A receptacle type optical apparatus is provided that prevents occurrence of misalignment in coupling optical waveguides. The receptacle type optical apparatus includes an optical device module having a light-emitting device and a light-receiving device, and an enclosure that stores the optical device module, the receptacle type optical apparatus allowing a part of an optical connector to be inserted inside the enclosure and establishing connection with the optical connector. An inner spatial area is formed in the enclosure that allows the part of the optical connector and the optical device module to be swingable with respect to a predetermined position in the optical device module. Furthermore, a support member is provided to swingably support the part of the optical connector and the optical device module integrally at the predetermined position.Type: ApplicationFiled: January 30, 2007Publication date: January 10, 2008Inventors: Futoshi Endou, Tadashi Hatano, Satoshi Motohiro, Hiroyoshi Ishii
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Publication number: 20070154224Abstract: In an optical transmission module having a communication module which is freely movable in a case, when a tensile force is generated on an optical cable after connection of an optical transmission module, optical coupling surface and an optical axis center follow each other and thus stable optical transmission can be constantly performed.Type: ApplicationFiled: December 13, 2006Publication date: July 5, 2007Inventors: Hiroyoshi Ishii, Toshikazu Ohtake, Osamu Yamada, Fumihide Maeda, Satoshi Motohiro