Patents by Inventor Akio Honji
Akio Honji 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: 7993529Abstract: A treatment method of organic compounds included in waste water, comprising the steps of: supplying waste water to an adsorber 2 filled with an adsorbent 3 therein for adsorbing the organic compounds in the waste water by the adsorbent 3 in the adsorber 2, supplying a current between an anode 9 and a cathode 8 in water including an electrolyte in an electrolyzer 6 for electrolyzing the water including an electrolyte, and supplying an electrolyte resulting from electrolysis in the electrolyzer 6 to the adsorbent 3 in the adsorber 2 for contacting the electrolyte with the adsorbent 3, so that the organic compounds adsorbed by the adsorbent 3 are desorbed or decomposed.Type: GrantFiled: March 25, 2010Date of Patent: August 9, 2011Assignees: Hitachi, Ltd., Hitachi Kyowa Engineering Co., Ltd.Inventors: Akio Honji, Hayahito Ishii, Akira Mochizuki, Norihide Saho, Tsutomu Tsuyama, Hisashi Isogami
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Publication number: 20100176039Abstract: A treatment method of organic compounds included in waste water, comprising the steps of: supplying waste water to an adsorber 2 filled with an adsorbent 3 therein for adsorbing the organic compounds in the waste water by the adsorbent 3 in the adsorber 2, supplying a current between an anode 9 and a cathode 8 in water including an electrolyte in an electrolyzer 6 for electrolyzing the water including an electrolyte, and supplying an electrolyte resulting from electrolysis in the electrolyzer 6 to the adsorbent 3 in the adsorber 2 for contacting the electrolyte with the adsorbent 3, so that the organic compounds adsorbed by the adsorbent 3 are desorbed or decomposed.Type: ApplicationFiled: March 25, 2010Publication date: July 15, 2010Inventors: Akio Honji, Hayahito Ishii, Akira Mochizuki, Norihide Saho, Tsutomu Tsuyama, Hisashi Isogami
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Patent number: 7722773Abstract: A treatment method of organic compounds included in waste water, comprising the steps of: supplying waste water to an adsorber 2 filled with an adsorbent 3 therein for adsorbing the organic compounds in the waste water by the adsorbent 3 in the adsorber 2, supplying a current between an anode 9 and a cathode 8 in water including an electrolyte in an electrolyzer 6 for electrolyzing the water including an electrolyte, and supplying an electrolyte resulting from electrolysis in the electrolyzer 6 to the adsorbent 3 in the adsorber 2 for contacting the electrolyte with the adsorbent 3, so that the organic compounds adsorbed by the adsorbent 3 are desorbed or decomposed.Type: GrantFiled: February 29, 2008Date of Patent: May 25, 2010Assignees: Hitachi, Ltd., Hitachi Kyowa Engineering Co., Ltd.,Inventors: Akio Honji, Hayahito Ishii, Akira Mochizuki, Norihide Saho, Tsutomu Tsuyama, Hisashi Isogami
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Patent number: 7662295Abstract: A method and an apparatus for removing dissolved organic substances from an oily water obtained as a by-product from an oilfield, characterized in that an oily water obtained as a by-product from an oilfield by separating a crude oil from a crude oil/brine mixture is brought into contact with an adsorbent to adsorptively remove organic substances dissolved in the water containing oil suspended therein and that the adsorbent is regenerated.Type: GrantFiled: November 1, 2005Date of Patent: February 16, 2010Assignee: Hitachi, Ltd.Inventors: Toshiaki Arato, Hidehiro Iizuka, Akira Mochizuki, Tomoko Suzuki, Akio Honji, Shigesaburo Komatsu, Hisashi Isogami, Hiroshi Sasaki
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Publication number: 20080245739Abstract: A treatment method of organic compounds included in waste water, comprising the steps of: supplying waste water to an adsorber 2 filled with an adsorbent 3 therein for adsorbing the organic compounds in the waste water by the adsorbent 3 in the adsorber 2, supplying a current between an anode 9 and a cathode 8 in water including an electrolyte in an electrolyzer 6 for electrolyzing the water including an electrolyte, and supplying an electrolyte resulting from electrolysis in the electrolyzer 6 to the adsorbent 3 in the adsorber 2 for contacting the electrolyte with the adsorbent 3, so that the organic compounds adsorbed by the adsorbent 3 are desorbed or decomposed.Type: ApplicationFiled: February 29, 2008Publication date: October 9, 2008Inventors: Akio HONJI, Hayahito Ishii, Akira Mochizuki, Norihide Saho, Tsutomu Tsuyama, Hisashi Isogami
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Publication number: 20080023401Abstract: A method and a device for removing dissolved organic material in oilfield produced water which are characterized by bringing an adsorbent into contact with oilfield produced water obtained by separation of crude oil from a mixture of crude oil and salt water, adsorbing and removing dissolved organic material in the emulsion, and regenerating the adsorbent.Type: ApplicationFiled: November 1, 2005Publication date: January 31, 2008Applicant: HITACHI, LTD.Inventors: Toshiaki Arato, Hidehiro Iizuka, Akira Mochizuki, Tomoko Suzuki, Akio Honji, Shigesaburo Komatsu, Hisashi Isogami, Hiroshi Sasaki
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Patent number: 7294315Abstract: Fluorine compounds such as C2F6, CF4, CHF3, SF6 and NF3, are made in contact with a fluorine compound decomposition catalyst and a catalyst the decomposition oft least one of CO, SO2F2 and N2O in the presence of water or in the presence of water and oxygen. The catalyst the decomposition oft least one of CO, SO2F2 and N2O preferably contains at least one selected from Pd, Pt, Cu, Mn, Fe, Co, Rh, Ir and Au in the form of a metal or an oxide. According to the invention, the fluorine compound can be converted to HF, which is liable to be absorbed by water or an alkaline aqueous solution, and a substance, such as CO, SO2F2 and N2O, formed by decomposition of the fluorine compound can also be decomposed.Type: GrantFiled: June 9, 1999Date of Patent: November 13, 2007Assignee: Hitachi, Ltd.Inventors: Shuichi Kanno, Akio Honji, Hisao Yamashita, Shigeru Azuhata, Shin Tamata, Kazuyoshi Irie
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Patent number: 7261868Abstract: Fluorine compounds such as C2F6, CF4, CHF3, SF6 and NF3, are made to contact with a fluorine compound decomposition catalyst and a catalyst for the decomposition of at least one of CO, SO2F2 and N2O in the presence of water or in the presence of water and oxygen. The catalyst for the decomposition of at least one of CO, SO2F2 and N2O preferably contains at least one selected from Pd, Pt, Cu, Mn, Fe, Co, Rh, Ir and Au in the form of a metal or an oxide. According to the invention, the fluorine compound can be converted to HF, which can be absorbed by water or an alkaline aqueous solution. Furthermore, a substance such as CO, SO2F2 and N2O which is formed by decomposition of the fluorine compound can also be decomposed.Type: GrantFiled: November 15, 2004Date of Patent: August 28, 2007Assignee: Hitachi, Ltd.Inventors: Shuichi Kanno, Akio Honji, Hisao Yamashita, Shigeru Azuhata, Shin Tamata, Kazuyoshi Irie
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Publication number: 20050089461Abstract: Fluorine compounds such as C2F6, CF4, CHF3, SF6 and NF3, are made in contact with a fluorine compound decomposition catalyst and a catalyst the decomposition oft least one of CO, SO2F2 and N2O in the presence of water or in the presence of water and oxygen. The catalyst the decomposition oft least one of CO, SO2F2 and N2O preferably contains at least one selected from Pd, Pt, Cu, Mn, Fe, Co, Rh, Ir and Au in the form of a metal or an oxide. According to the invention, the fluorine compound can be converted to HF, which is liable to be absorbed by water or an alkaline aqueous solution, and a substance, such as CO, SO2F2 and N2O, formed by decomposition of the fluorine compound can also be decomposed.Type: ApplicationFiled: November 15, 2004Publication date: April 28, 2005Inventors: Shuichi Kanno, Akio Honji, Hisao Yamashita, Shigeru Azuhata, Shin Tamata, Kazuyoshi Irie
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Patent number: 5937637Abstract: A system for purifying an exhaust gas for use in an automobile is disclosed which does not externally discharge unburnt hydrocarbons until a catalyst becomes active. An adsorbent is provided upstream of the catalyst. A heat exchanger is disposed between an upstream portion of the adsorbent and a portion between the adsorbent and the catalyst for controlling the elevation of the temperature of the adsorbent and for promoting the elevation of the temperature of the catalyst. The unburnt hydrocarbons are absorbed by the adsorbent 4 in the initial period of time from starting of an engine until the catalyst 8 becomes active. Temperature control is made in such a manner that the unburnt hydrocarbons which are adsorbed by the adsorbent 4 begins to be desorbed therefrom substantially simultaneously with the time when the catalyst 8 begins to function.Type: GrantFiled: July 5, 1996Date of Patent: August 17, 1999Assignee: Hitachi, Ltd.Inventors: Masakatsu Fujishita, Takeshi Atago, Akio Honji, Osamu Kuroda, Toshio Ogawa, Noriko Watanabe, Minoru Osuga
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Patent number: 5577383Abstract: An apparatus for purifying an exhaust gas emitted from an internal combustion engine, particularly, immediately after starting of the engine, includes a mechanism for reducing the time required to heat a catalyst converter to the activation temperature. The exhaust gas is passed through a preliminary catalyst close to the engine and then through a main catalyst downstream of the catalyst. The engine is operated with an air-fuel mixture which is richer than the amount indicated by the stoichiometric air/fuel ratio for a period of time from when engine is started until the main catalyst is heated to a temperature at which the catalyst can sufficiently perform its purifying capability. The preliminary catalyst is enabled to function at lower temperatures by combusting the exhaust gas which is generated during a rich air-fuel mixture condition. The main catalyst can be heated with the generated combustion heat, resulting in an enhancement in exhaust gas purifying capability.Type: GrantFiled: November 30, 1994Date of Patent: November 26, 1996Assignee: Hitachi, Ltd.Inventors: Osamu Kuroda, Hisao Yamashita, Akio Honji, Noriko Watanabe, Toshio Ogawa, Hiroshi Miyadera, Takeshi Atago
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Patent number: 5560201Abstract: A system for purifying an exhaust gas for use in an automobile is disclosed which does not externally discharge unburnt hydrocarbons until a catalyst becomes active. An adsorbent is provided upstream of the catalyst. A heat exchanger is disposed between an upstream portion of the adsorbent and a portion between the adsorbent and the catalyst for controlling the elevation of the temperature of the adsorbent and for promoting the elevation of the temperature of the catalyst. The unburnt hydrocarbons are absorbed by the adsorbent in the initial period of time from starting of an engine until the catalyst becomes active. Temperature control is made in such a manner that the unburnt hydrocarbons which are adsorbed by the adsorbent begins to be desorbed therefrom substantially simultaneously with the time when the catalyst begins to function.Type: GrantFiled: February 1, 1995Date of Patent: October 1, 1996Assignee: Hitachi, Ltd.Inventors: Masakatsu Fujishita, Takeshi Atago, Akio Honji, Osamu Kuroda, Toshio Ogawa, Noriko Watanabe, Minoru Osuga
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Patent number: 5388405Abstract: A system for purifying an exhaust gas for use in an automobile is disclosed which does not externally discharge unburnt hydrocarbons until a catalyst becomes active. An adsorbent is provided upstream of the catalyst. A heat exchanger is disposed between an upstream portion of the adsorbent and a portion between the adsorbent and the catalyst for controlling the elevation of the temperature of the adsorbent and for promoting the elevation of the temperature of the catalyst. The unburnt hydrocarbons are absorbed by the adsorbent in the initial period of time from starting of an engine until the catalyst becomes active. Temperature control is made in such a manner that the unburnt hydrocarbons which are adsorbed by the adsorbent begins to be desorbed therefrom substantially simultaneously with the time when the catalyst begins to function.Type: GrantFiled: September 30, 1992Date of Patent: February 14, 1995Assignee: Hitachi, Ltd.Inventors: Masakatsu Fujishita, Takeshi Atago, Akio Honji, Osamu Kuroda, Toshio Ogawa, Noriko Watanabe, Minoru Osuga
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Patent number: 5379586Abstract: An exhaust gas cleaning system has a catalyzer provided in the exhaust passage of the engine and an adsorbent provided upstream from the catalyzer. The adsorbent temporarily adsorbs unburned hydrocarbons emitted in large amounts immediately after the engine is started. The system provides an amount of air required to substantially eliminate unburned hydrocarbons, based on the temperature of the adsorbent and the oxygen concentration in exhaust gas upstream from the catalyzer. An air supplying unit is provided upstream from the adsorbent. A temperature sensor is provided for the adsorbent. An oxygen sensor is provided at the inlet of the catalyzer. A control unit calculates the amount of air (oxygen) necessary for the catalyzer to convert the unburned hydrocarbons released from the adsorbent, based on signals from the temperature sensor and the oxygen sensor and the exhaust flow rate. The control unit accordingly controls the air supplying unit.Type: GrantFiled: September 21, 1992Date of Patent: January 10, 1995Assignee: Hitachi, Ltd.Inventors: Akio Honji, Toshio Ogawa, Osamu Kuroda, Hisao Yamashita, Takahiro Tachi, Hiroshi Miyadera, Masakatsu Fujishita
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Patent number: 4643957Abstract: In a fuel cell comprising a pair of counterposed gas-diffusible electrodes, an electrolyte-retaining, porous matrix provided between and in contact with the electrodes, a fuel chamber for feeding a gaseous fuel to the anode of the pair of the electrodes and an oxidizing agent chamber for feeding a gaseous oxidizing agent to the cathode of the pair of the electrodes, the cell performance is remarkably prevented from lowering by making the electrolyte saturated absorption amount of the cathode smaller than that of the anode, thereby preventing migration of the electrolyte in the electrolyte-retaining matrix.Type: GrantFiled: April 11, 1985Date of Patent: February 17, 1987Assignee: Hitachi, Ltd.Inventors: Seizi Takeuchi, Tomoichi Kamo, Tatsuo Horiba, Kunko Kitami, Toshikatsu Mori, Toshiki Kahara, Jinichi Imahashi, Akio Honji, Masato Takeuchi, Kohki Tamura
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Patent number: 4623415Abstract: In a fuel cell comprising an electrolyte-retaining matrix interposed between a pair of gas-diffusion electrodes, the matrix comprises particles or fibers of a substance unreactive with phosphoric acid and having electron-insulating properties and an inorganic binder.Type: GrantFiled: January 18, 1985Date of Patent: November 18, 1986Assignees: Hitachi, Ltd., Hitachi Chemical Co., Ltd.Inventors: Toshiki Kahara, Shinpei Matsuda, Kenzo Ishii, Seizi Takeuchi, Jinichi Imahashi, Akio Honji
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Patent number: 4555452Abstract: In operating a fuel cell comprising an oxidizing agent chamber subject to supply of an oxidizing agent gas and a fuel chamber subjected to supply of a fuel gas, sintering of noble metal particles such as platinum black as an electrode catalyst can be prevented from sintering by connecting the fuel cell to an outside auxiliary load circuit and controlling the unit cell voltage to not more than 0.80 V at start or discontinuation to operate the fuel cell or during the operation of the fuel cell when an outside load becomes too low due to fluctuation of the outside load. The fuel cell performance can be improved thereby.Type: GrantFiled: March 7, 1985Date of Patent: November 26, 1985Assignee: Hitachi, Ltd.Inventors: Toshiki Kahara, Toshikatsu Mori, Jinichi Imahashi, Akio Honji, Kohki Tamura
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Patent number: 4529671Abstract: In a fuel cell comprising an electrolyte-retaining matrix interposed between a pair of gas-diffusion electrodes, the matrix comprises particles or fibers of a substance unreactive with phosphoric acid and having electron-insulating properties and an inorganic binder.Type: GrantFiled: September 2, 1982Date of Patent: July 16, 1985Assignees: Hitachi, Ltd., Hitachi Chemical Co., Ltd.Inventors: Toshiki Kahara, Shinpei Matsuda, Kenzo Ishii, Seizi Takeuchi, Jinichi Imahashi, Akio Honji
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Patent number: 4493879Abstract: A fuel cell comprising a pair of gas diffusion electrodes, an electrolyte retaining matrix disposed between said gas diffusion electrodes, and a phosphoric acid electrolyte disposed within said matrix, characterized by using as matrix that comprising one or more metal oxides having electronic insulation and insolubility in phosphoric acid and a binder is excellent in phosphoric acid retaining ability and can be used for a long period of time without degradation of the performance of fuel cell.Type: GrantFiled: March 11, 1982Date of Patent: January 15, 1985Assignees: Hitachi, Ltd., Hitachi Chemical Company, Ltd.Inventors: Toshiki Kahara, Shimpei Matsuda, Kenzo Ishii, Seizi Takeuchi, Jinichi Imahashi, Akio Honji