Patents by Inventor Toshiaki Arato
Toshiaki Arato 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).
-
Publication number: 20110070140Abstract: A nitrogen oxide removing catalyst has a porous material having fine holes with controlled diameters and a catalyst having an active ingredient supported in the fine holes are used. In one instance, the diameter of the plurality of fine holes is within a range of 8-9 ?. The fine hole diameter is preferably from 8-9 ? when the diameter is measured in a gas adsorption method in which fine holes with diameters of 3.4-14 ? can be measured. The fine hole diameter is also preferably from 8-9 ? when the fine hole diameter is calculated from a crystal structure. In another instance, the porous material is mesoporous silica. The primary particle diameter of the mesoporous silica is preferably within a range of 150-300 nm. The nitrogen oxide removing catalyst having superior durability and a method of removing nitrogen oxides are also provided.Type: ApplicationFiled: November 23, 2010Publication date: March 24, 2011Applicant: BABCOCK-HITACHI K.K.Inventors: Noriko YOSHIDA, Hidehiro IIZUKA, Yasuyoshi KATO, Yoshinori NAGAI, Toshiaki ARATO
-
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
-
Publication number: 20090263304Abstract: A porous material having fine holes with controlled diameters and a catalyst having an active ingredient supported in the fine holes in the porous material are used. According to a first embodiment of the invention, the diameter of the plurality of fine holes is within a range of 8 to 9 ?. The fine hole diameter is preferably from 8 to 9 ? when the diameter is measured in a gas adsorption method in which fine holes with diameters of 3.4 to 14 ? can be measured. The fine hole diameter is also preferably from 8 to 9 ? when the fine hole diameter is calculated from a crystal structure. According to a second embodiment of the invention, the porous material is mesoporous silica. The primary particle diameter of the mesoporous silica is preferably within a range of 150 to 300 nm.Type: ApplicationFiled: February 12, 2008Publication date: October 22, 2009Inventors: Noriko Yoshida, Hidehiro Iizuka, Yasuyoshi Kato, Yoshinori Nagai, Toshiaki Arato
-
Patent number: 7347980Abstract: A gas stream containing at least one fluorine compound selected from the group consisting of compounds of carbon and fluorine, compounds of carbon, hydrogen and fluorine, compounds of sulfur and fluorine, compounds of nitrogen and fluorine and compounds of carbon, hydrogen, oxygen and fluorine is contacted with a catalyst comprising at least one of alumina, titania, zirconia and silica, preferably a catalyst comprising alumina and at least one of nickel oxide, zinc oxide and titania in the presence of steam, thereby hydrolyzing the fluorine compound at a relatively low temperature, e.g. 200°–800° C., to convert the fluorine of the fluorine compound to hydrogen fluoride.Type: GrantFiled: October 7, 2003Date of Patent: March 25, 2008Assignee: Hitachi, Ltd.Inventors: Shuichi Kanno, Toshiaki Arato, Shinzo Ikeda, Ken Yasuda, Hisao Yamashita, Shigeru Azuhata, Shin Tamata, Kazuyoshi Irie
-
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
-
Publication number: 20060120938Abstract: A gas stream containing at least one fluorine compound selected from the group consisting of compounds of carbon and fluorine, compounds of carbon, hydrogen and fluorine, compounds of sulfur and fluorine, compounds of nitrogen and fluorine and compounds of carbon, hydrogen, oxygen and fluorine is contacted with a catalyst comprising at least one of alumina, titania, zirconia and silica, preferably a catalyst comprising alumina and at least one of nickel oxide, zinc oxide and titania in the presence of steam, thereby hydrolyzing the fluorine compound at a relatively low temperature, e.g. 200°-800° C., to convert the fluorine of the fluorine compound to hydrogen fluoride.Type: ApplicationFiled: January 19, 2006Publication date: June 8, 2006Applicant: HITACHI LTD.Inventors: Shuichi Kanno, Toshiaki Arato, Shinzo Ikeda, Ken Yasuda, Hisao Yamashita, Shigeru Azuhata, Shin Tamata, Kazuyoshi Irie
-
Publication number: 20060093547Abstract: A gas stream containing at least one fluorine compound selected from the group consisting of compounds of carbon and fluorine, compounds of carbon, hydrogen and fluorine, compounds of sulfur and fluorine, compounds of nitrogen and fluorine and compounds of carbon, hydrogen, oxygen and fluorine is contacted with a catalyst comprising at least one of alumina, titania, zirconia and silica, preferably a catalyst comprising alumina and at least one of nickel oxide, zinc oxide and titania in the presence of steam, thereby hydrolyzing the fluorine compound at a relatively low temperature, e.g. 200.degree.-800° C., to convert the fluorine of the fluorine compound to hydrogen fluoride.Type: ApplicationFiled: December 6, 2005Publication date: May 4, 2006Applicant: HITACHI LTD.Inventors: Shuichi Kanno, Toshiaki Arato, Shinzo Ikeda, Ken Yasuda, Hisao Yamashita, Shigeru Azuhata, Shin Tamata, Kazuyoshi Irie
-
Patent number: 6942841Abstract: A gas stream containing at least one fluorine compound selected from the group consisting of compounds of carbon and fluorine, compounds of carbon, hydrogen and fluorine, compounds of sulfur and fluorine, compounds of nitrogen and fluorine and compounds of carbon, hydrogen, oxygen and fluorine is contacted with a catalyst comprising at least one of alumina, titania, zirconia and silica, preferably a catalyst comprising alumina and at least one of nickel oxide, zinc oxide and titania in the presence of steam, thereby hydrolyzing the fluorine compound at a relatively low temperature, e.g. 200°-800° C., to convert the fluorine of the fluorine compound to hydrogen fluoride.Type: GrantFiled: August 9, 2002Date of Patent: September 13, 2005Assignee: Hitachi, Ltd.Inventors: Shuichi Kanno, Toshiaki Arato, Shinzo Ikeda, Ken Yasuda, Hisao Yamashita, Shigeru Azuhata, Shin Tamata, Kazuyoshi Irie
-
Patent number: 6855305Abstract: A gas stream containing at least one fluorine compound selected from the group consisting of compounds of carbon and fluorine, compounds of carbon, hydrogen and fluorine, compounds of sulfur and fluorine, compounds of nitrogen and fluorine and compounds of carbon, hydrogen, oxygen and fluorine is contacted with a catalyst comprising at least one of alumina, titania, zirconia and silica, preferably a catalyst comprising alumina and at least one of nickel oxide, zinc oxide and titania in the presence of steam, thereby hydrolyzing the fluorine compound at a relatively low temperature, e.g. 200°-800° C., to convert the fluorine of the fluorine compound to hydrogen fluoride.Type: GrantFiled: October 3, 2003Date of Patent: February 15, 2005Assignee: Hitachi, Ltd.Inventors: Shuichi Kanno, Toshiaki Arato, Shinzo Ikeda, Ken Yasuda, Hisao Yamashita, Shigeru Azuhata, Shin Tamata, Kazuyoshi Irie
-
Publication number: 20040067186Abstract: A gas stream containing at least one fluorine compound selected from the group consisting of compounds of carbon and fluorine, compounds of carbon, hydrogen and fluorine, compounds of sulfur and fluorine, compounds of nitrogen and fluorine and compounds of carbon, hydrogen, oxygen and fluorine is contacted with a catalyst comprising at least one of alumina, titania, zirconia and silica, preferably a catalyst comprising alumina and at least one of nickel oxide, zinc oxide and titania in the presence of steam, thereby hydrolyzing the fluorine compound at a relatively low temperature, e.g. 200°-800° C., to convert the fluorine of the fluorine compound to hydrogen fluoride.Type: ApplicationFiled: October 3, 2003Publication date: April 8, 2004Applicant: Hitachi, Ltd.Inventors: Shuichi Kanno, Toshiaki Arato, Shinzo Ikeda, Ken Yasuda, Hisao Yamashita, Shigeru Azuhata, Shin Tamata, Kazuyoshi Irie
-
Publication number: 20040067185Abstract: A gas stream containing at least one fluorine compound selected from the group consisting of compounds of carbon and fluorine, compounds of carbon, hydrogen and fluorine, compounds of sulfur and fluorine, compounds of nitrogen and fluorine and compounds of carbon, hydrogen, oxygen and fluorine is contacted with a catalyst comprising at least one of alumina, titania, zirconia and silica, preferably a catalyst comprising alumina and at least one of nickel oxide, zinc oxide and titania in the presence of steam, thereby hydrolyzing the fluorine compound at a relatively low temperature, e.g. 200°-800° C., to convert the fluorine of the fluorine compound to hydrogen fluoride.Type: ApplicationFiled: October 2, 2003Publication date: April 8, 2004Applicant: Hitachi, Ltd.Inventors: Shuichi Kanno, Toshiaki Arato, Shinzo Ikeda, Ken Yasuda, Hisao Yamashita, Shigeru Azuhata, Shin Tamata, Kazuyoshi Irie
-
Publication number: 20040047784Abstract: A gas stream containing at least one fluorine compound selected from the group consisting of compounds of carbon and fluorine, compounds of carbon, hydrogen and fluorine, compounds of sulfur and fluorine, compounds of nitrogen and fluorine and compounds of carbon, hydrogen, oxygen and fluorine is contacted with a catalyst comprising at least one of alumina, titania, zirconia and silica, preferably a catalyst comprising alumina and at least one of nickel oxide, zinc oxide and titania in the presence of steam, thereby hydrolyzing the fluorine compound at a relatively low temperature, e.g. 200°-800° C., to convert the fluorine of the fluorine compound to hydrogen fluoride.Type: ApplicationFiled: August 9, 2002Publication date: March 11, 2004Inventors: Shuichi Kanno, Toshiaki Arato, Shinzo Ikeda, Ken Yasuda, Hisao Yamashita, Shigeru Azuhata, Shin Tamata, Kazuyoshi Irie
-
Publication number: 20040047786Abstract: A gas stream containing at least one fluorine compound selected from the group consisting of compounds of carbon and fluorine, compounds of carbon, hydrogen and fluorine, compounds of sulfur and fluorine, compounds of nitrogen and fluorine and compounds of carbon, hydrogen, oxygen and fluorine is contacted with a catalyst comprising at least one of alumina, titania, zirconia and silica, preferably a catalyst comprising alumina and at least one of nickel oxide, zinc oxide and titania in the presence of steam, thereby hydrolyzing the fluorine compound at a relatively low temperature, e.g. 200°-800° C., to convert the fluorine of the fluorine compound to hydrogen fluoride.Type: ApplicationFiled: October 7, 2003Publication date: March 11, 2004Inventors: Shuichi Kanno, Toshiaki Arato, Shinzo Ikeda, Ken Yasuda, Hisao Yamashita, Shigeru Azuhata, Shin Tamata, Kazuyoshi Irie
-
Publication number: 20010001652Abstract: A gas stream containing at least one fluorine compound selected from the group consisting of compounds of carbon and fluorine, compounds of carbon, hydrogen and fluorine, compounds of sulfur and fluorine, compounds of nitrogen and fluorine and compounds of carbon, hydrogen, oxygen and fluorine is contacted with a catalyst comprising at least one of alumina, titania, zirconia and silica, preferably a catalyst comprising alumina and at least one of nickel oxide, zinc oxide and titania in the presence of steam, thereby hydrolyzing the fluorine compound at a relatively low temperature, e.g. 200°-800° C., to convert the fluorine of the fluorine compound to hydrogen fluoride.Type: ApplicationFiled: January 9, 1998Publication date: May 24, 2001Applicant: Shuichi KannoInventors: SHUICHI KANNO, TOSHIAKI ARATO, SHINZO IKEDA, TAKESHI YASUDA, HISAO YAMASHITA, SHIGERU AZUHATA, SHIN TAMATA, KAZUYOSHI IRIE
-
Patent number: 6077482Abstract: A treating apparatus for decomposing organohalogen compounds such as chlorofluorocarbons (CFC's), trichloroethylene, methylbromide, halon, and the like, effectively, with a high activity of catalyst, is provided. The apparatus includes a reactor in which organohalogen compounds are decomposed by contact at a temperature in a range of 200.degree..about.500.degree. C. with a catalyst which comprises titania and tungsten oxide by an atomic ratio of Ti and W in a range from 20 mol % to 95 mol % Ti and from 5 mol % to 80 mol % W, with at least the surface of the titania being covered with a porous layer of the tungsten oxide. In accordance with the present invention, organic compounds containing any of fluorine, chlorine and bromine will be decomposed with a high efficiency, and the activity of the catalyst can be maintained for a long time.Type: GrantFiled: January 9, 1998Date of Patent: June 20, 2000Assignee: Hitachi, Ltd.Inventors: Shuichi Kanno, Hiroshi Kawagoshi, Akira Kato, Toshiaki Arato, Hisao Yamashita, Shigeru Azuhata, Shin Tamata
-
Patent number: 5877391Abstract: A method for treating a gas flow containing organohalogen compounds including the steps of contacting the gas flow with a catalyst at a temperature below 500.degree. C. in the presence of an effective amount of steam, wherein the catalyst contains titania, tungsten oxide, and silica, the Ti and W are present in the range of 20-95 mol % Ti and 5-80 mol % W based on Ti and W, and the amount of silica is in the range of 0.5-15% by weight silica to 100% by weight titania. Accordingly, the organohalogen compound can be decomposed effectively to carbon monoxide, carbon dioxide, and hydrogen halide.Type: GrantFiled: March 4, 1997Date of Patent: March 2, 1999Assignee: Hitachi, Ltd.Inventors: Shuichi Kanno, Hiroshi Kawagoshi, Akira Kato, Toshiaki Arato, Hisao Yamashita, Shigeru Azuhata, Shin Tamata, Shinzo Ikeda, Takeshi Yasuda
-
Patent number: 5759504Abstract: A treating method for decomposing organohalogen compounds such as chlorofluorocarbons (CFC), trichloroethylene, methyl bromide, halon, and the like, effectively, with a high activity of catalyst is provided.Organohalogen compounds are decomposed by contacting at a temperature in a range of 200.degree..about.500.degree. C. with catalyst which comprises titania and tungsten oxide by an atomic ratio of Ti and W in a range from 20 mol % to 95 mol % Ti and from 5 mol % to 80 mol % W, and at least surface of the titania is covered with porous layer of tungsten oxide.In accordance with the present invention, organic compounds containing any of fluorine, chlorine, and bromine can be decomposed with a high efficiency, and the activity of the catalyst can be maintained for a long time.Type: GrantFiled: December 18, 1995Date of Patent: June 2, 1998Assignee: Hitachi, Ltd.Inventors: Shuichi Kanno, Hiroshi Kawagoshi, Akira Kato, Toshiaki Arato, Hisao Yamashita, Shigeru Azuhata, Shin Tamata
-
Patent number: 5589652Abstract: In the metallic member of the invention, ceramic super fine particles, and solid lubricant particles or short size fibers are dispersed, and the grain size of the ceramic particles is smaller than the solid lubricant particle size or fiber diameter.Type: GrantFiled: February 23, 1994Date of Patent: December 31, 1996Assignee: Hitachi, Ltd.Inventors: Toshiaki Arato, Yasuhisa Aono, Shigeo Tsuruoka, Katsuhiro Komuro
-
Patent number: 5203984Abstract: A plant operational status monitoring supervisory system comprising; means for extracting information directly relating to water quality of an objective portion consecutively for a period of time by means of an electrochemical water quality sensor installed in an objective portion to monitor in-situ in a plant; means for evaluating water quality based on thus extracted information; means for comparing an obtained water quality evaluation result with a reference value for a predetermined plant operation procedure; and means for displaying or storing necessary portion out of said comparison results; is disclosed.Type: GrantFiled: August 28, 1990Date of Patent: April 20, 1993Assignee: Hitachi, Ltd.Inventors: Masanori Sakai, Katsumi Mabuchi, Toshiaki Arato, Takuya Takahashi, Masakiyo Izumiya, Isao Masaoka, Yoshitaka Kojima, Masahisa Inagaki, Katsumi Ohsumi, Makoto Hayashi, Fumio Sato, Masateru Suwa, Kimihiko Akahori
-
Patent number: 5138221Abstract: The present invention relates to an inorganically insulated heater having a long life for use in air flow sensors, cathode ray tube cathode heaters etc., wherein the distribution of inorganic insulating particles of the whole insulating layer is made uniform and thereby the development of cracks and the like in the insulating layer is reduced and breaking of wire and dielectric breakdown occur with difficulty even at high temperatures and under strong vibrations.Type: GrantFiled: June 28, 1990Date of Patent: August 11, 1992Assignee: Hitachi, Ltd.Inventors: Toshiaki Arato, Toshiaki Narisawa, Masahisa Sobue, Nobuyuki Koganezawa