Patents by Inventor Hiroaki Kato
Hiroaki Kato 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: 5584177Abstract: An adsorber temperature-estimating device for an internal combustion engine comprises an adsorber arranged in the exhaust passage, for adsorbing an unburnt gas component present in exhaust gases emitted from the engine. Operating parameter sensors detect operating parameters of the engine, and an ECU estimates the temperature of the adsorber, based on the detected operating parameters. An exhaust gas-purifying system for the engine comprises the adsorber, a catalytic converter arranged in the exhaust passage at a location downstream of the adsorbing means, for purifying exhaust gases, and a secondary air supply pump for supplying secondary air to the exhaust passage at a location upstream of the catalytic converter. The ECU controls an amount of secondary air to be supplied to the exhaust passage, based on the estimated temperature calculated by the adsorber temperature-estimating device.Type: GrantFiled: December 28, 1994Date of Patent: December 17, 1996Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Toshikazu Oketani, Tetsu Teshirogi, Yuichi Shimasaki, Seiji Hatcho, Seiji Matsumoto, Takuya Aoki, Akihisa Saito, Takashi Komatsuda, Hiroaki Kato, Yukio Miyashita
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Patent number: 5555724Abstract: An adsorbing capacity determining apparatus is provided for determining the adsorbing capacity of an unburned component adsorbing device in an exhaust system for an internal combustion engine. The adsorbing capacity determining apparatus comprises upstream and downstream air-fuel ratio detectors, respectively coupled upstream and downstream from the unburned component adsorbing device, a temperature sensor for sensing the temperature of the unburned component adsorbing means and a computer for determining the adsorption capacity as a function of the outputs of the system and downstream air-fuel ratio detectors, when the temperature is within a predetermined range.Type: GrantFiled: January 25, 1995Date of Patent: September 17, 1996Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Seiji Hatcho, Yuichi Shimasaki, Takuya Aoki, Seiji Matsumoto, Hiroaki Kato, Takashi Komatsuda, Akihisa Saito, Toshikazu Oketani
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Patent number: 5555725Abstract: A control system controls an electrically heated catalyst for purifying exhaust gases emitted from an internal combustion engine. Voltage applied to the electrically heated catalyst and electric current flowing through the same are detected. A changeover is made between supply and interrupt of power to the electrically heated catalyst. A parameter indicative of an operative state of the electrically heated catalyst is calculated based on the detected voltage and the detected current, and the operative state of the electrically heated catalyst is detected based on the parameter. The changeover between the supply and interrupt of power to the electrically heated catalyst is controlled based the operative state of the electrically heated catalyst thus detected.Type: GrantFiled: July 17, 1995Date of Patent: September 17, 1996Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yuichi Shimasaki, Takashi Komatsuda, Hiroaki Kato, Takuya Aoki
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Patent number: 5544482Abstract: An exhaust gas-purifying system for an internal combustion engine has an adsorbing device arranged in an exhaust passage thereof for adsorbing or desorbing unburnt component contained in exhaust gases. An exhaust gas recirculation passage branches off from the exhaust passage at a branch point downstream of the adsorbing device and extending to an intake passage of the engine for returning exhaust gases flowing through the adsorbing device to the intake passage. The path of exhaust gases is changed to selectively introduce the exhaust gases containing the unburnt components into the exhaust gas recirculation passage. The adsorbing capacity of the adsorbing device is checked based on a manner of change in an air-fuel ratio of exhaust gases detected when the exhaust gases are introduced into the exhaust gas recirculation passage.Type: GrantFiled: March 16, 1995Date of Patent: August 13, 1996Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Seiji Matsumoto, Takuya Aoki, Yuichi Shimasaki, Seiji Hatcho, Toshikazu Oketani, Yukio Miyashita, Akihisa Saito, Takashi Komatsuda, Hiroaki Kato
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Patent number: 5531203Abstract: In a multi-cylinder internal combustion engine including a plurality of fuel injection valves corresponding to a plurality of cylinders, respectively, and a catalytic converter provided in an exhaust system common to the cylinders, the concentration of oxygen in the exhaust gas from the engine is precisely controlled in accordance with the operational condition of the engine in a low-temperature state of the engine for the prompt activation of the catalyst. When the engine is at a low temperature, the operation of the fuel injection valves is controlled so as to stop the supplying of a fuel into the particular cylinders and, the operation of a valve operating characteristic changing means is controlled to adjust the amounts of air drawn and discharged on the basis of conditions detected by operational condition detecting means and at such low temperature to thereby control the oxygen supplied to the catalyst in the catalytic converter whereby the activity of the catalyst can be controlled.Type: GrantFiled: January 25, 1995Date of Patent: July 2, 1996Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Takashi Komatsuda, Hiroaki Kato, Yuichi Shimasaki, Akihisa Saito, Toshikazu Oketani, Takuya Aoki
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Patent number: 5508591Abstract: An active display device, comprising: a plurality of source buses and a plurality of gate buses; a plurality of pixel electrodes, said pixel electrodes each having associated therewith a switching element for delivering a drive signal to said pixel electrode from at least one of said source buses as a function of a signal provided by at least one of said gate buses; and means other than said switching elements for selectively electrically connecting at least one of said pixel electrodes to a corresponding one of said source buses in the event said at least one pixel electrode is considered to be defective.Type: GrantFiled: April 15, 1993Date of Patent: April 16, 1996Assignee: Sharp Kabushiki KaishaInventors: Yuzuru Kanemori, Mikio Katayama, Kiyoshi Nakazawa, Naofumi Kondo, Masaya Okamoto, Hiroaki Kato, Kozo Yano, Katsumi Irie, Kumiko Otsu, Hiroshi Fujiki, Toshiaki Fujihara, Hideji Marumoto, Hidenori Negoto, Kazuyori Mitsumoto
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Patent number: 5501073Abstract: An internal combustion engine has an adsorber arranged in the exhaust passage for adsorbing unburnt components in exhaust gases, and an exhaust gas-purifying device arranged in the exhaust passage at a location downstream of the adsorber. The exhaust gas-purifying device is equipped with a heater. An ignition timing of an internal combustion engine is retarded when the engine is started at a low engine temperature. The retardation of the ignition timing is restrained over a time period from the start of the engine to a time point the exhaust gas-purifying device is warmed up to a predetermined activated condition.Type: GrantFiled: September 13, 1994Date of Patent: March 26, 1996Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yukio Miyashita, Yuichi Shimasaki, Toshikazu Oketani, Seiji Hatcho, Seiji Matsumoto, Takuya Aoki, Akihisa Saito, Takashi Komatsuda, Hiroaki Kato
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Patent number: 5499501Abstract: In an engine exhaust emission control system, a ternary catalyst and a hydrocarbon adsorber are provided in an exhaust passageway from an engine. The ternary catalyst includes first passages through which an exhaust gas discharged from the engine flows, and second passages through which the exhaust gas which has flowed through the first passages and the hydrocarbon adsorber flows. The first and second passages are laminated to each other to enable heat exchange therebetween. The hydrocarbon adsorber is capable of being cooled by a cooling medium. Thus, it is possible to reliably prevent hydrocarbons in the exhaust gas from being released to the atmosphere during the cold start of the engine.Type: GrantFiled: November 18, 1994Date of Patent: March 19, 1996Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hiroaki Kato, Yuichi Shimasaki, Akihisa Saito, Takashi Komatsuda, Toshikazu Oketani, Seiji Haccho, Seiji Matsumoto, Takuya Aoki, Yukio Miyashita
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Patent number: 5493857Abstract: An exhaust gas-purging system for an internal combustion engine includes a catalyst arranged in an exhaust passage of the engine, for purifying exhaust gases emitted from the engine. The system detects an engine operating condition and a catalyst temperature parameter indicative of the temperature of the catalyst. The supply of secondary air to the exhaust passage and the flow path cross-sectional area of the exhaust passage are controlled based on at least one of the operating condition of the engine and the catalyst temperature parameter.Type: GrantFiled: February 24, 1995Date of Patent: February 27, 1996Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Takashi Komatsuda, Hiroaki Kato, Yuichi Shimasaki, Akihisa Saito, Toshikazu Oketani, Takuya Aoki
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Patent number: 5469025Abstract: An active matrix display device which includes a first and a second insulating substrates, a gate bus an adjacent gate bus, and a source bus arranged on the first substrate, a pixel electrode in a segment enclosed by the gate and the source buses, a switching element connected to the pixel electrode, the gate bus and the source bus, wherein the source bus comprises a projection extending toward the pixel electrode so as to be electrically disconnected therefrom, and the adjacent gate bus comprises a projection extending toward the pixel electrode, the source bus being overlaid on the adjacent gate bus projection with an insulating layer sandwiched therebetween, the adjacent gate bus projection being provided with an electroconductive member at the top thereof with an insulating layer sandwiched therebetween, the electroconductive member being electrically connected to the pixel electrode, and electrically disconnected from the source bus projection.Type: GrantFiled: March 22, 1995Date of Patent: November 21, 1995Assignee: Sharp Kabushiki KaishaInventors: Yuzuru Kanemori, Mikio Katayama, Kiyoshi Nakazawa, Naofumi Kondo, Masaya Okamoto, Hiroaki Kato, Kozo Yano, Katsumi Irie, Kumiko Otsu, Hiroshi Fujiki, Toshiaki Fujihara, Hideji Marumoto, Hidenori Negoto, Kazuyori Mitsumoto
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Patent number: 5467791Abstract: An ultrasonic cleaning device for cleaning a fuel assembly constituting an item to be cleaned, includes: a plurality of ultrasonic transducers which irradiate the outside of this item to be cleaned with ultrasonic waves from at least two directions; an ultrasonic transducer translating mechanism which moves ultrasonic transducers vertically along a support member and which is provided with a steel housing constituting an ultrasonic wave reflecting structure which reflects ultrasonic waves from ultrasonic transducers towards the item to be cleaned a feed pump arranged outside the item to be cleaned and constituting a cleaning liquid supply mechanism which supplies cleaning liquid in a pressurized condition into the interior of the item to be cleaned; and a discharge pump including a cleaning liquid discharge mechanism that discharges cleaning liquid from the cleaning liquid supply mechanism to a filter device.Type: GrantFiled: February 22, 1994Date of Patent: November 21, 1995Assignee: Kabushiki Kaisha ToshibaInventors: Hiroaki Kato, Hideaki Heki, Shirou Komura, Emiko Okamura
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Patent number: 5467594Abstract: An exhaust gas-purifying system for an internal combustion engine is provided with hydrocarbon-adsorbing catalyzer for adsorbing unburnt gas components present in exhaust gases. At least one exhaust gas-purifying catalyzer is arranged in the exhaust passage at a location downstream of the hydrocarbon-adsorbing catalyzer. A bypass passage bypasses the hydrocarbon-purifying catalyzer. A changeover valve is arranged in the exhaust passage at a branchpoint between the bypass passage and the exhaust passage, for selecting a first flow path in which exhaust gases are guided to the unburnt gas component-adsorbing catalyzer, or a second flow path in which exhaust gases are guided through the bypass passage. First and second exhaust gas concentration sensors are arranged in the exhaust passage at locations upstream and downstream of the hydrocarbon-purifying catalyzer.Type: GrantFiled: July 26, 1994Date of Patent: November 21, 1995Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Takuya Aoki, Yuichi Shimasaki, Seiji Matsumoto, Seiji Hatcho, Toshikazu Oketani, Yukio Miyashita, Akihisa Saito, Takashi Komatsuda, Hiroaki Kato
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Patent number: 5463230Abstract: An active matrix board comprising pixel electrodes arranged in a matrix fashion on an insulating substrate, and scan lines each having an addition capacity electrode placed in a superposed relation with a portion of a corresponding one of the pixel electrodes, said scan lines each comprising a first scan line formed in an area other than the area in which said addition capacity electrode is held in a superposed relation with said pixel electrode, and a second scan line formed to cover said first scan line and having said addition capacity electrode as its part, whereby the possibility of pixel defect occurrence is reduced and the production yield of display apparatuses is improved.Type: GrantFiled: November 7, 1994Date of Patent: October 31, 1995Assignee: Sharp Kabushiki KaishaInventors: Hidenori Negoto, Mikio Katayama, Kiyoshi Nakazawa, Hiroaki Kato, Yuzuru Kanemori, Takayoshi Nagayasu
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Patent number: 5446568Abstract: An active matrix display apparatus comprising pixel electrodes arranged in a matrix fashion on an insulating substrate, storage capacity electrodes arranged opposite to said pixel electrodes, storage capacity lines connected individually to said storage capacity electrodes, a common main line connected to said storage capacity lines, at least one branch line branched from said common main line, and a branch terminal formed at the leading end of said branch line, whereby a signal delay can be minimized.Type: GrantFiled: July 6, 1992Date of Patent: August 29, 1995Assignee: Sharp Kabushiki KaishaInventors: Kiyoshi Nakazawa, Mikio Katayama, Hiroaki Kato, Akihiko Imaya
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Patent number: 5434686Abstract: An active matrix display device comprising two pixel electrodes in each rectangular area defined by adjacent signal lines and adjacent scanning lines. The pixel electrodes disposed across each signal line are connected with respective switching elements, which are connected to the common scanning line and the common signal line. In this way, each pixel electrode has only one signal line formed on one side thereof. As a result, a line defect conventionally produced by a leakage between adjacent signal lines through a pixel electrode is prevented. Further, a defective pixel can be easily corrected by short-circuiting the pixel electrode with the adjacent signal line.Type: GrantFiled: September 9, 1993Date of Patent: July 18, 1995Assignee: Sharp Kabushiki KaishaInventors: Yuzuru Kanemori, Akihiko Imaya, Hiroaki Kato, Kozo Yano, Katsumi Irie
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Patent number: 5390052Abstract: A method of recording/reproducing a table of contents in a digital magnetic tape apparatus, in which a head performs a helical scan of a magnetic tape to obtain tracks, each track including a PCM area for recording digital data and a subarea for recording subcode signals. In the recording, a reproduction skip signal is written in the subarea by a TOC button operation and a TOC signal is written in the PCM area of the tape itself as an audio signal. Also, a TOC code signal corresponding to the TOC signal is written in the subarea. When reproducing, the TOC code signal is stored in a program memory during the reproduction of the tape. A high speed search of program numbers or music titles and a data head position searching of the same are precisely performed.Type: GrantFiled: October 28, 1992Date of Patent: February 14, 1995Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiroaki Kato, Yanabe Junji
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Patent number: 5343216Abstract: An active matrix substrate comprising picture element electrodes disposed in a matrix on a substrate, each of which is composed of divided electrodes, and an electrically conductive film on which two of said divided electrodes adjacent to each other are superposed in a manner to sandwich an insulating film therebetween so as to form a connection. The connection is irradiated with laser beams from the outside of the display apparatus when one of the divided electrodes brings about a picture element defect, so that both the divided electrodes can be electrically connected to each other, thereby attaining a correction of the picture element defect. A display apparatus using the active matrix substrate is also provided.Type: GrantFiled: March 1, 1993Date of Patent: August 30, 1994Assignee: Sharp Kabushiki KaishaInventors: Mikio Katayama, Hiroaki Kato, Takayoshi Nagayasu, Akihiko Imaya, Hidenori Negoto, Yuzuru Kanemori, Toshihiko Hirobe
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Patent number: 5335102Abstract: An active matrix display device comprising: scanning branch lines each branching from the scanning line; and switching elements each formed on an end portion of the scanning branch line, wherein the distance between the scanning line side of the switching element and the scanning line is so provided as to enable the scanning branch line to be cut off by irradiation with light energy. Alternatively, an active matrix display device comprising: a conductive layer disposed under the signal line and the pixel electrode with an insulating film interposed therebetween; and a conductive piece formed between the pixel electrode and the insulating film.Type: GrantFiled: February 19, 1991Date of Patent: August 2, 1994Assignee: Sharp Kabushiki KaishaInventors: Yuzuru Kanemori, Mikio Katayama, Kiyoshi Nakazawa, Hiroaki Kato, Kozo Yano, Naofumi Kondo, Hiroshi Fujiki, Toshiaki Fujihara, Hidenori Negoto, Manabu Takahama
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Patent number: 5302987Abstract: An active matrix substrate has an insulating substrate, a plurality of signal lines and a plurality of scanning lines arranged in a matrix on the insulating substrate and defining a matrix of areas, each area including a pixel electrode and a switching device. The switching device has a connecting electrode for connecting the switching device to the pixel electrode. The connecting electrode includes a rectangular main portion and an extended portion connected to the main portion, and the main portion has a side which is substantially identical in length to the width of the switching device. The main portion and the extended portion are disposed between the pixel electrode and the insulating substrate.Type: GrantFiled: April 28, 1992Date of Patent: April 12, 1994Assignee: Sharp Kabushiki KaishaInventors: Yuzuru Kanemori, Hiroshi Fujiki, Toshiaki Fujihara, Akihiko Imaya, Hiroaki Kato, Mikio Katayama, Takayoshi Nagayasu
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Patent number: 5268678Abstract: A matrix-type display device includes a display electrode board that has a plurality of pixel electrodes arranged into a matrix. A set of scan lines extend in parallel in one direction and a set signal lines extend in an orthogonal direction so that these lines are arranged between adjacent pixel electrodes. A spare line intersects at least some of the scan lines and/or said signal lines at each end of said set of lines so as to sandwich an insulating film therebetween, and a lead-out line is connected to one end of the spare line. The lead-out lines are connected to external connecting lines, which are outside of the display electrode board, so that the lead-out lines can be connected to each other through said connecting lines. Line breakdowns can be corrected and the correction of the breakdowns entails little or no increase in load capacity, electrical resistance, and noise with respect to the corrected line.Type: GrantFiled: June 20, 1990Date of Patent: December 7, 1993Assignee: Sharp Kabushiki KaishaInventors: Kiyoshi Nakazawa, Mikio Katayama, Hiroaki Kato, Yuzuru Kanemori, Takayoshi Nagayasu, Hidenori Negoto