Patents by Inventor Masaru Kitamura
Masaru Kitamura 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: 20170274599Abstract: According to one embodiment, an additive manufacturing apparatus includes a laminate formation unit, a binding formation unit, control unit and a detection unit. The laminate formation unit forms laminated layers of a powdered material. The binding formation unit binds at least a part of a layer to form a manufactured object. The control unit binds the layer by the binding formation unit on the basis of shape information of the manufactured object. The detection unit detects a shape of the part of the manufactured object. The control unit compares the shape of the manufactured object and the shape information.Type: ApplicationFiled: March 17, 2015Publication date: September 28, 2017Applicant: Kabushiki Kaisha ToshibaInventors: Masaru KITAMURA, Mikio ADACHI, Tomomi INO, Atsushi FUJIHARA
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Patent number: 7687621Abstract: The present invention provides a process for regenerating a catalyst for producing e-caprolactam comprising the steps of adsorbing a silicon compound on a zeolite catalyst that had been used for a Beckmann rearrangement reaction of cyclohexanone oxime and contacting the catalyst with an aqueous solution containing a compound selected from a quaternary ammonium compound, lower alkylamines and ammonia. The present invention also provides a process for producing e-caprolactam comprising subjecting cyclohexanone oxime to the Beckmann rearrangement reaction in the presence of the catalyst thus regenerated.Type: GrantFiled: July 2, 2007Date of Patent: March 30, 2010Assignee: Sumitomo Chemical Company, LimitedInventors: Keisuke Sugita, Masaru Kitamura
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Publication number: 20100016637Abstract: The present invention provides a method for producing an oxime by carrying out an ammoximation reaction of a ketone with an organic peroxide and ammonia in a solvent in the presence of a titanosilicate, characterized in that the reaction is carried out by feeding the ketone and ammonia to a reactor in which the solvent, the titanosilicate and the organic peroxide are charged.Type: ApplicationFiled: July 13, 2009Publication date: January 21, 2010Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Miyuki OIKAWA, Masaru KITAMURA
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Publication number: 20090225955Abstract: The angle of each collimator plate with respect to an X-ray focal point is determined by fitting the collimator plate in grooves formed in upper and lower supports each having an integral structure. In addition, the warpage of each collimator plate is corrected and its flatness is maintained by fitting the periphery of the collimator plate which is on the X-ray detector side in a corresponding groove of an abutment plate provided on the X-ray detection surface side of the upper and lower supports. Furthermore, each collimator plate is supported by the corresponding grooves of the upper and lower supports and the corresponding groove of the abutment plate at least three sides.Type: ApplicationFiled: April 3, 2009Publication date: September 10, 2009Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Kenji Igarashi, Masaharu Shimizu, Akiji Wakabayashi, Yasuo Saito, Machiko Iso, Tsuguo Kishi, Shigeru Sakuta, Masaru Kitamura, Ryuhachiro Doji, Hideki Ide, Shuya Nambu, Masahiko Yamazaki, Katsuya Yamada, Yasutada Nakagawa
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Patent number: 7526070Abstract: The angle of each collimator plate with respect to an X ray focal point is determined by fitting the collimator plate in grooves formed in upper and lower supports each having an integral structure. In addition, the warpage of each collimator plate is corrected and its flatness is maintained by fitting the periphery of the collimator plate which is on the X ray detector side in a corresponding groove of an abutment plate provided on the X ray detection surface side of the upper and lower supports. Furthermore, each collimator plate is supported by the corresponding grooves of the upper and lower supports and the corresponding groove of the abutment plate on at least three sides.Type: GrantFiled: April 14, 2006Date of Patent: April 28, 2009Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Kenji Igarashi, Masaharu Shimizu, Akiji Wakabayashi, Yasuo Saito, Machiko Iso, Tsuguo Kishi, Shigeru Sakuta, Masaru Kitamura, Ryuhachiro Doji, Hideki Ide, Shuya Nambu, Masahiko Yamazaki, Katsuya Yamada, Yasutada Nakagawa
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Publication number: 20080033168Abstract: The present invention provides a process for regenerating a catalyst for producing e-caprolactam comprising the steps of adsorbing a silicon compound on a zeolite catalyst that had been used for a Beckmann rearrangement reaction of cyclohexanone oxime and contacting the catalyst with an aqueous solution containing a compound selected from a quaternary ammonium compound, lower alkylamines and ammonia. The present invention also provides a process for producing e-caprolactam comprising subjecting cyclohexanone oxime to the Beckmann rearrangement reaction in the presence of the catalyst thus regenerated.Type: ApplicationFiled: July 2, 2007Publication date: February 7, 2008Inventors: Keisuke Sugita, Masaru Kitamura
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Patent number: 7238803Abstract: ?-Caprolactam is produced by the method comprising the step of introducing a gas comprising cyclohexanone oxime into a layer of solid catalyst particles through a plurality of holes of a gas diffusion plate so that the solid catalyst particles are brought into contact with the gas, while fluidizing the catalyst layer, wherein the holes have an average diameter of about 3 mm or smaller. In accordance with the production method, ?-caprolactam can be produced from a raw material gas comprising cyclohexanone oxime with a high conversion of cyclohexanone oxime and a high selectivity to ?-caprolactam.Type: GrantFiled: July 6, 2004Date of Patent: July 3, 2007Assignee: Sumitomo Chemical Company, LimitedInventors: Masashi Yokota, Yoshinori Kobayashi, Masaru Kitamura
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Patent number: 7189845Abstract: The invention provides a method for producing ?-caprolactam comprising the steps of: a reaction process which subjects cyclohexanone oxime to a Beckmann rearrangement reaction in the presence of a solid catalyst; and a catalyst regeneration process which regenerates the solid catalyst used in the reaction process by heat treatment under an atmosphere comprising an oxygen-containing gas, wherein the solid catalyst heat-treated in the catalyst regeneration process is used in the reaction process, the carbon contents in the solid catalyst in the reaction process and the catalyst regeneration process are maintained in a range of 0.5 to 2% by weight, and the nitrogen contents in the solid catalyst in the reaction process and the catalyst regeneration process are maintained in a range of 0.01 to 0.2% by weight. According to the invention, ?-caprolactam can be produced in a high production yield for a long period of time by enhancing persistence of the catalytic activity for producing ?-caprolactam.Type: GrantFiled: March 25, 2005Date of Patent: March 13, 2007Assignee: Sumitomo Chemical Company, LimitedInventors: Keisuke Sugita, Masaru Kitamura, Masahiro Hoshino
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Publication number: 20060233298Abstract: The angle of each collimator plate with respect to an X-ray focal point is determined by fitting the collimator plate in grooves formed in upper and lower supports each having an integral structure. In addition, the warpage of each collimator plate is corrected and its flatness is maintained by fitting the periphery of the collimator plate which is on the X-ray detector side in a corresponding groove of an abutment plate provided on the X-ray detection surface side of the upper and lower supports. Furthermore, each collimator plate is supported by the corresponding grooves of the upper and lower supports and the corresponding groove of the abutment plate at at least three sides.Type: ApplicationFiled: April 14, 2006Publication date: October 19, 2006Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Kenji Igarashi, Masaharu Shimizu, Akiji Wakabayashi, Yasuo Saito, Machiko Iso, Tsuguo Kishi, Shigeru Sakuta, Masaru Kitamura, Ryuhachiro Doji, Hideki Ide
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Patent number: 7071360Abstract: A method is provided for evaporating cyclohexanone oxime in which cyclohexanone oxime is evaporated using a falling-film evaporator with wetting the evaporation surface of the evaporator well with the cyclohexanone oxime at a pressure of less than about 1060 Torr with a falling rate of the cyclohexanone oxime of about 170 kg/hour or more per one meter around the circumference of evaporation surface at the lowest part of the evaporator. In this method, the cyclohexanone oxime is evaporated efficiently with little decomposition thereof, while preventing the plugging of the pipes of the evaporator and continuously carrying out the operation of the evaporator for a long period of time.Type: GrantFiled: March 26, 2002Date of Patent: July 4, 2006Assignee: Sumitomo Chemical Company, LimitedInventors: Yasumoto Shimazu, Kanji Kuwahara, Masaru Kitamura
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Patent number: 7060645Abstract: The present invention provides a method for manufacturing a zeolite comprising following steps of: (1): calcining crystals obtained by hydrothermal synthesis reaction of a silicon compound; (2): contact treating a calcined product obtained by the step (1) with an aqueous solution including an amine and/or a quaternary ammonium compound; (3): calcining a treated product obtained by the step (2); and (4): contact treating the calcined product obtained by the step (3) with an aqueous solution including ammonia and/or an ammonium salt. According to the present invention, a method is also provided wherein ?-caprolactam is manufactured by Beckmann rearrangement reaction of cyclohexanone oxime in a gaseous phase in the presence of the zeolite manufactured by the above-described method.Type: GrantFiled: June 24, 2005Date of Patent: June 13, 2006Assignee: Sumitomo Chemical Company, LimitedInventors: Masahiro Hoshino, Masaru Kitamura, Keisuke Sugita
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Patent number: 7026474Abstract: A method for producing ?-caprolactam and a method for reactivating a zeolite catalyst for the production are provided. In the reactivation step, a zeolite catalyst is allowed to contact a gas containing a carboxylic acid, water and a compound selected from ammonia and amines. In accordance with the present invention, the catalytic activities of a zeolite catalyst used for the Beckmann rearrangement reaction of cyclohexanone oxime can be effectively restored. Consequently, ?-caprolactam may be produced with a high production yield for a long period of time by reusing the catalyst by the method described above.Type: GrantFiled: February 11, 2005Date of Patent: April 11, 2006Assignee: Sumitomo Chemical Company, LimitedInventors: Keisuke Sugita, Masaru Kitamura, Masahiro Hoshino
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Publication number: 20060004194Abstract: The present invention provides a method for manufacturing a zeolite comprising following steps of: (1): calcining crystals obtained by hydrothermal synthesis reaction of a silicon compound; (2): contact treating a calcined product obtained by the step (1) with an aqueous solution including an amine and/or a quaternary ammonium compound; (3): calcining a treated product obtained by the step (2); and (4): contact treating the calcined product obtained by the step (3) with an aqueous solution including ammonia and/or an ammonium salt. According to the present invention, a method is also provided wherein ?-caprolactam is manufactured by Beckmann rearrangement reaction of cyclohexanone oxime in a gaseous phase in the presence of the zeolite manufactured by the above-described method.Type: ApplicationFiled: June 24, 2005Publication date: January 5, 2006Inventors: Masahiro Hoshino, Masaru Kitamura, Keisuke Sugita
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Publication number: 20050245740Abstract: The invention provides a method for producing ?-caprolactam comprising the steps of: a reaction process which subjects cyclohexanone oxime to a Beckmann rearrangement reaction in the presence of a solid catalyst; and a catalyst regeneration process which regenerates the solid catalyst used in the reaction process by heat treatment under an atmosphere comprising an oxygen-containing gas, wherein the solid catalyst heat-treated in the catalyst regeneration process is used in the reaction process, the carbon contents in the solid catalyst in the reaction process and the catalyst regeneration process are maintained in a range of 0.5 to 2% by weight, and the nitrogen contents in the solid catalyst in the reaction process and the catalyst regeneration process are maintained in a range of 0.01 to 0.2% by weight. According to the invention, ?-caprolactam can be produced in a high production yield for a long period of time by enhancing persistence of the catalytic activity for producing ?-caprolactam.Type: ApplicationFiled: March 25, 2005Publication date: November 3, 2005Applicant: Sumitomo Chemical Company, LimitedInventors: Keisuke Sugita, Masaru Kitamura, Masahiro Hoshino
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Publication number: 20050182254Abstract: A method for producing ?-caprolactam and a method for reactivating a zeolite catalyst for the production are provided. In the reactivation step, a zeolite catalyst is allowed to contact a gas containing a carboxylic acid, water and a compound selected from ammonia and amines. In accordance with the present invention, the catalytic activities of a zeolite catalyst used for the Beckmann rearrangement reaction of cyclohexanone oxime can be effectively restored. Consequently, ?-caprolactam may be produced with a high production yield for a long period of time by reusing the catalyst by the method described above.Type: ApplicationFiled: February 11, 2005Publication date: August 18, 2005Inventors: Keisuke Sugita, Masaru Kitamura, Masahiro Hoshino
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Publication number: 20050010020Abstract: ?-Caprolactam is produced by the method comprising the step of introducing a gas comprising cyclohexanone oxime into a layer of solid catalyst particles through a plurality of holes of a gas diffusion plate so that the solid catalyst particles are brought into contact with the gas, while fluidizing the catalyst layer, wherein the holes have an average diameter of about 3 mm or smaller. In accordance with the production method, ?-caprolactam can be produced from a raw material gas comprising cyclohexanone oxime with a high conversion of cyclohexanone oxime and a high selectivity to ?-caprolactam.Type: ApplicationFiled: July 6, 2004Publication date: January 13, 2005Inventors: Masashi Yokota, Yoshinori Kobayashi, Masaru Kitamura
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Publication number: 20020143181Abstract: A method is provided for evaporating cyclohexanone oxime in which cyclohexanone oxime is evaporated using a falling-film evaporator with wetting the evaporation surface of the evaporator well with the cyclohexanone oxime at a pressure of less than about 1060 Torr with a falling rate of the cyclohexanone oxime of about 170 kg/hour or more per one meter around the circumference of evaporation surface at the lowest part of the evaporator. In this method, the cyclohexanone oxime is evaporated efficiently with little decomposition thereof, while preventing the plugging of the pipes of the evaporator and continuously carrying out the operation of the evaporator for a long period of time.Type: ApplicationFiled: March 26, 2002Publication date: October 3, 2002Inventors: Yasumoto Shimazu, Kanji Kuwahara, Masaru Kitamura
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Patent number: 6264332Abstract: A projection type image display apparatus for projecting an image onto a screen includes a light source, a beam shape converter, a beam divider, a beam superimposer, a processing unit, and a projection lens. In operation, the light source emits a light beam. The beam shape converter converts a sectional shape of the light beam into a different shape. For example, the beam shape converter can convert a circular cross section into a rectangular cross section. The beam divider then spatially divides the converted light beam into plural light beams. The beam divider can include, for example, a first prism array that divides the converted light beam horizontally and vertically into four beams. The beam superimposer superimposes the plural light beams onto a target surface, such as a liquid crystal panel. The beam superimposer can include, for example, a second prism array and a beam collimator that superimpose the plural light beams on the target surface.Type: GrantFiled: March 19, 1999Date of Patent: July 24, 2001Assignee: Kabushiki Kaisha ToshibaInventors: Yoshinori Honguh, Yuzuru Takashima, Hisayuki Mihara, Masaru Kitamura
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Patent number: 6265574Abstract: A process for producing &egr;-caprolactam is provided which comprises the steps of subjecting cyclohexanone oxime to a gaseous phase Beckmann rearrangement reaction in a fluidized bed system using a solid catalyst and re-generating the catalyst, wherein said process comprises a step of treating the catalyst with an oxygen-containing gas at an elevated temperature in a re-generation step so that the nitrogen content of the catalyst falls within a range of 10 ppm to 2,500 ppm on its way to the reaction step from the re-generating step. According to the present invention, &egr;-caprolactam is produced with a high conversion or a high selectivity without interrupting the rearrangement reaction or the re-generation step.Type: GrantFiled: February 9, 2000Date of Patent: July 24, 2001Assignee: Sumitomo Chemical Company, LimitedInventors: Masaru Kitamura, Yasumoto Shimazu, Makoto Yako
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Patent number: 6257625Abstract: A flexible joint comprises: first cylindrical bodies comprising a pair of spherical ring members; a second cylindrical body comprising a sleeve relatively movably inserted in the first cylindrical bodies from an axial direction X of the second cylindrical body; third cylindrical bodies comprising a pair of casing tubes which are fitted around outer peripheral surfaces of the first cylindrical bodies and are provided with mutually slidable spherical inner peripheral surfaces, the casings being formed at their opposite ends with connecting portions, and being provided at their outer peripheral surfaces of large diameter portions with projections having through holes; and rods capable of being inserted into the through holes formed in the outer peripheral surfaces of the large diameter portions, each of the rods being provided and fixed between the projections of the pair of third cylindrical bodies for restricting the telescopic movement of the tube joint, wherein the rods comprise a pair of rods connected to eType: GrantFiled: April 23, 1999Date of Patent: July 10, 2001Assignee: Taisei Kiko Co., Ltd.Inventors: Kenji Kitani, Masaru Kitamura, Yasushi Fujita