Patents by Inventor Shuji Seki
Shuji Seki 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: 9701553Abstract: According to one embodiment, a copper recovery apparatus includes a precipitation tank, a mixing tank, a filter-aid feeder, a solid-liquid separator includes a filter, a cleaning-water supply line, a cleaning-water discharge line, a separation tank, and a filter-aid return line. The precipitation tank is configured to receive copper ions-containing water to be treated and an alkali to prepare treated water containing a precipitate of copper compound. The solid-liquid separator is configured to allow the treated water to be passed through the filter on which the precoat layer is deposited to separate the precipitate retained on the precoat layer from a filtrate.Type: GrantFiled: June 5, 2014Date of Patent: July 11, 2017Assignee: Kabushiki Kaisha ToshibaInventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Hirofumi Noguchi, Yasutaka Kikuchi, Shuji Seki
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Patent number: 9121083Abstract: According to one embodiment, a copper recovery apparatus includes a precipitation tank configured to precipitate copper hydroxide grains in water, a filter aid supplier, a mixing tank configured to mix the filter aid with a water to produce a suspension, a separator provided with a filter, a line configured to supply the suspension to the separator, thereby forming a precoat layer formed of the filter aid on the filter, a separation tank configured to receive the detached matter of the precoat layer discharged together with the detaching water from the separator to magnetically separate copper hydroxide grains and filter aid, a line configure to discharge and recover the detaching water from the separation tank, and a line configured to return the separated filter aid to the filter aid supplier from the separation tank.Type: GrantFiled: September 5, 2014Date of Patent: September 1, 2015Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Hirofumi Noguchi, Yasutaka Kikuchi, Shuji Seki
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Patent number: 8986541Abstract: According to one embodiment, a copper recovery apparatus includes a precipitation tank, a mixing tank, a filter-aid feeder, a solid-liquid separator includes a filter, a cleaning-water supply line, a cleaning-water discharge line, a separation tank, and a filter-aid return line. The precipitation tank is configured to receive copper ions-containing water to be treated and an alkali to prepare treated water containing a precipitate of copper compound. The solid-liquid separator is configured to allow the treated water to be passed through the filter on which the precoat layer is deposited to separate the precipitate retained on the precoat layer from a filtrate.Type: GrantFiled: June 7, 2012Date of Patent: March 24, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Hirofumi Noguchi, Yasutaka Kikuchi, Shuji Seki
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Publication number: 20140377152Abstract: According to one embodiment, a copper recovery apparatus includes a precipitation tank configured to precipitate copper hydroxide grains in water, a filter aid supplier, a mixing tank configured to mix the filter aid with a water to produce a suspension, a separator provided with a filter, a line configured to supply the suspension to the separator, thereby forming a precoat layer formed of the filter aid on the filter, a separation tank configured to receive the detached matter of the precoat layer discharged together with the detaching water from the separator to magnetically separate copper hydroxide grains and filter aid, a line configure to discharge and recover the detaching water from the separation tank, and a line configured to return the separated filter aid to the filter aid supplier from the separation tank.Type: ApplicationFiled: September 5, 2014Publication date: December 25, 2014Inventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Hirofumi Noguchi, Yasutaka Kikuchi, Shuji Seki
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Patent number: 8911631Abstract: According to one embodiment, a fluorine recovering apparatus includes a precipitating device allowing fluoride ion-containing water to react with calcium source to form precipitate, a mixing tank mixing a filter aid including particles of a magnetic material having a diameter of 0.5 to 5 ?m with a dispersion medium to produce slurry, a filter aid feeder to the mixing tank, a solid-liquid separator with a filter depositing a filter aid layer, and depositing the precipitate on the filter aid layer, a cleaning mechanism removing the filter aid and the precipitate, a separating tank separating the filter aid and the precipitate, and a returning mechanism returning the filter aid to the filter aid feeder.Type: GrantFiled: May 9, 2012Date of Patent: December 16, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Shuji Seki
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Publication number: 20140284256Abstract: According to one embodiment, a copper recovery apparatus includes a precipitation tank, a mixing tank, a filter-aid feeder, a solid-liquid separator includes a filter, a cleaning-water supply line, a cleaning-water discharge line, a separation tank, and a filter-aid return line. The precipitation tank is configured to receive copper ions-containing water to be treated and an alkali to prepare treated water containing a precipitate of copper compound. The solid-liquid separator is configured to allow the treated water to be passed through the filter on which the precoat layer is deposited to separate the precipitate retained on the precoat layer from a filtrate.Type: ApplicationFiled: June 5, 2014Publication date: September 25, 2014Inventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Hirofumi Noguchi, Yasutaka Kikuchi, Shuji Seki
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Patent number: 8834715Abstract: According to one embodiment, a copper recovery apparatus includes a precipitation tank configured to precipitate copper hydroxide grains in water, a filter aid supplier, a mixing tank configured to mix the filter aid with a water to produce a suspension, a separator provided with a filter, a line configured to supply the suspension to the separator, thereby forming a precoat layer formed of the filter aid on the filter, a separation tank configured to receive the detached matter of the precoat layer discharged together with the detaching water from the separator to magnetically separate copper hydroxide grains and filter aid, a line configure to discharge and recover the detaching water from the separation tank, and a line configured to return the separated filter aid to the filter aid supplier from the separation tank.Type: GrantFiled: July 21, 2011Date of Patent: September 16, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Hirofumi Noguchi, Yasutaka Kikuchi, Shuji Seki
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Publication number: 20120312727Abstract: According to one embodiment, a copper recovery apparatus includes a precipitation tank, a mixing tank, a filter-aid feeder, a solid-liquid separator includes a filter, a cleaning-water supply line, a cleaning-water discharge line, a separation tank, and a filter-aid return line. The precipitation tank is configured to receive copper ions-containing water to be treated and an alkali to prepare treated water containing a precipitate of copper compound. The solid-liquid separator is configured to allow the treated water to be passed through the filter on which the precoat layer is deposited to separate the precipitate retained on the precoat layer from a filtrate.Type: ApplicationFiled: June 7, 2012Publication date: December 13, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Taro FUKAYA, Kenji TSUTSUMI, Atsushi YAMAZAKI, Ichiro YAMANASHI, Hirofumi NOGUCHI, Yasutaka KIKUCHI, Shuji SEKI
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Publication number: 20120288435Abstract: According to one embodiment, a fluorine recovering apparatus includes a precipitating device allowing fluoride ion-containing water to react with calcium source to form precipitate, a mixing tank mixing a filter aid including particles of a magnetic material having a diameter of 0.5 to 5 ?m with a dispersion medium to produce slurry, a filter aid feeder to the mixing tank, a solid-liquid separator with a filter depositing a filter aid layer, and depositing the precipitate on the filter aid layer, a cleaning mechanism removing the filter aid and the precipitate, a separating tank separating the filter aid and the precipitate, and a returning mechanism returning the filter aid to the filter aid feeder.Type: ApplicationFiled: May 9, 2012Publication date: November 15, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Shuji Seki
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Patent number: 8300327Abstract: A method of producing an optical element, in which a first and a second die are cooperated with each other so as to press-mold a material in order to produce an optical element including a lens portion, the first die has a circular cross-sectional shape, and the second die defines therein an interior space having a polygonal cross-sectional shape with respect to the direction of die-fastening, the first die is adapted to enter into the interior space of the second die in the direction of die-fastening in the interior space so to press-mold the material in order to form the lens surface while the material is bulged out through gaps between the first die and the second die around the lens surface whereby forming protrusions. An optical element and a mold assembly for an optical element are also provided.Type: GrantFiled: December 19, 2007Date of Patent: October 30, 2012Assignee: Hitachi Maxell, LtdInventors: Shuji Seki, Hideki Komiya, Susumu Shibasaki, Makoto Aihara, Masashi Yoshimura
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Publication number: 20120234767Abstract: According to one embodiment, a copper recovery apparatus includes a precipitation tank configured to precipitate copper hydroxide grains in water, a filter aid supplyer, a mixing tank configured to mix the filter aid with a water to produce a suspension, a separator provided with a filter, a line configured to supply the suspension to the separator, thereby forming a precoat layer formed of the filter aid on the filter, a separation tank configured to receive the detached matter of the precoat layer discharged together with the detaching water from the separator to magnetically separate copper hydroxide grains and filter aid, a line configure to discharge and recover the detaching water from the separation tank, and a line configured to return the separated filter aid to the filter aid supplyer from the separation tank.Type: ApplicationFiled: July 21, 2011Publication date: September 20, 2012Inventors: Taro FUKAYA, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Hirofumi Noguchi, Yasutaka Kikuchi, Shuji Seki
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Publication number: 20120238003Abstract: A microorganism-concentrating apparatus according to one embodiment includes a mixing device, a filtering device, and a magnetic separation device. The mixing device is configured to mix an aqueous suspension of microorganisms with a particulate filter aid includes magnetic particles to prepare an aqueous slurry of the microorganisms and the particulate filter aid. The filtering device is configured to filter the aqueous slurry supplied from the mixing device to provide a filter cake includes the microorganisms and the particulate filter aid, and to provide a filtrate. The magnetic separation device is configured to magnetically separate the filter cake supplied from the filtering device into the microorganisms and the particulate filter aid.Type: ApplicationFiled: August 3, 2011Publication date: September 20, 2012Inventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Shuji Seki
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Publication number: 20120234768Abstract: According to one embodiment, a magnetic material coated resin includes an aggregate obtainable by aggregation of primary particles includes magnetic particles of which surfaces are coated with a polymer. The primary particles have an average diameter D1 which is 0.5 to 20 ?m. The aggregate has an average aggregate diameter D2 which satisfies D1<D2?20 ?m. The polymer has an average surface coating thickness t which satisfies 0.01<t?0.25 ?m.Type: ApplicationFiled: July 29, 2011Publication date: September 20, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Taro Fukaya, Kenji Tsutsumi, Atsushi Yamazaki, Ichiro Yamanashi, Hirofumi Noguchi, Yasutaka Kikuchi, Shuji Seki
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Patent number: 7754074Abstract: A filtering apparatus having a vessel and a filter made from fluororesin and treated before filtering operation by at least one of adding thermal treatment in gas or liquid and penetrating with fluid composed of hot water or steam at a temperature of less than melting point of the fluororesin.Type: GrantFiled: July 16, 2008Date of Patent: July 13, 2010Assignee: Kabushiki Kaisha ToshibaInventors: Makoto Fujie, Hideki Nakamura, Kazuya Yamada, Shuji Seki, Manabu Sakurai, Tadashi Fukushima, Kenichiro Ide, Tetsuya Noda, Masaru Komatsubara
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Publication number: 20100033849Abstract: An optical element being high in productivity and capable of ensuring a large bonding area, and a production method of the optical element. At mold opening when a top part (120) provided with a round portion (121) moves upward, a preform is placed in an inner space the interior of which is formed by a rectangular sleeve (110) and the round portion (131) of a bottom part (130). At mold clamping when the top part (120) moves downward, the preform is pressurized. That is, a convex lens portion is transferred by the concave curved surface (122) and the edge surface (123) of the round portion (121) and the concave curved surface (132) and the edge surface (133) of the round portion (131). The four side surfaces of an optical element (1) are transferred by the inner wall surface (110a) of the sleeve (110).Type: ApplicationFiled: December 19, 2007Publication date: February 11, 2010Applicant: HITACHI MAXELL, LTD.Inventors: Shuji Seki, Hideki Komiya, Susumu Shibasaki, Makoto Aihara, Masashi Yoshimura
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Publication number: 20090151355Abstract: A filtering apparatus having a vessel and a filter made from fluororesin and treated before filtering operation by at least one of adding thermal treatment in gas or liquid and penetrating with fluid composed of hot water or steam at a temperature of less than melting point of the fluororesin.Type: ApplicationFiled: July 16, 2008Publication date: June 18, 2009Inventors: Makoto FUJIE, Hideki Nakamura, Kazuya Yamada, Shuji Seki, Manabu Sakurai, Tadashi Fukushima, Kenichiro Ide, Tetsuya Noda, Masaru Komatsubara
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Publication number: 20080223043Abstract: A filtering apparatus having a vessel and a filter made from fluororesin and treated before filtering operation by at least one of adding thermal treatment in gas or liquid and penetrating with fluid composed of hot water or steam at a temperature of less than melting point of the fluororesin.Type: ApplicationFiled: December 12, 2007Publication date: September 18, 2008Inventors: Makoto FUJIE, Hideki Nakamura, Kazuya Yamada, Shuji Seki, Manabu Sakurai, Tadashi Fukushima, Kenichiro Ide, Tetsuya Noda, Masaru Komatsubara
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Patent number: 7309424Abstract: A filtering apparatus having a vessel and a filter made from fluororesin and treated before filtering operation by at least one of adding thermal treatment in gas or liquid and penetrating with fluid composed of hot water or steam at a temperature of less than melting point of the fluororesin.Type: GrantFiled: July 18, 2005Date of Patent: December 18, 2007Assignee: Kabushiki Kaisha ToshibaInventors: Makoto Fujie, Hideki Nakamura, Kazuya Yamada, Shuji Seki, Manabu Sakurai, Tadashi Fukushima, Kenichiro Ide, Tetsuya Noda, Masaru Komatsubara
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Publication number: 20070102347Abstract: Provided is a membrane filtration system which makes it possible to improve operation rate of the system by increasing the amount of water to be treated, and to reduce costs required for chemical washing and replacement of a membrane. Accordingly, a total running cost is reduced. The membrane filtration system is provided with temperature-responsive membrane modules for filtering supplied raw water to discharge it as treated water. In each of the temperature-responsive membrane modules, temperature-responsive membranes are formed into any one of planar and cylindrical forms, and are then filled into a container.Type: ApplicationFiled: November 6, 2006Publication date: May 10, 2007Inventors: Takeshi Matsushiro, Manabu Sakurai, Shuji Seki, Hideki Nakamura, Kenichi Hinoshita, Takahiro Soma, Masahiko Tsutsumi
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Patent number: 7027549Abstract: Migration of radioactive materials from a pressure vessel to a steam system in a nuclear power plant is suppressed by using a dryer (3) provided with corrugated plates (22) having surfaces coated with an inorganic ion-exchange material stable under a condition in which high-temperature water exist, such as TiO2.Type: GrantFiled: March 30, 2001Date of Patent: April 11, 2006Assignee: Kabushiki Kaisha ToshibaInventors: Yukio Hemmi, Shuji Seki, Yutaka Uruma, Minoru Kobayashi, Fumihiko Ishibashi, Ichiro Inami, Takao Baba