Patents by Inventor Yasuhiro Uda
Yasuhiro Uda 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: 11517856Abstract: A flow path spacer (13) of the present disclosure includes a plurality of first linear portions (21) and a plurality of second linear portions (22).Type: GrantFiled: April 23, 2019Date of Patent: December 6, 2022Assignee: NITTO DENKO CORPORATIONInventors: Yuha Okazaki, Yasuhiro Uda
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Patent number: 11484840Abstract: A raw water channel spacer capable of suppressing formation of a concentration polarization layer in a region in the vicinity of a separation membrane in a raw water channel, and a spiral wound membrane element including the same are provided. A raw water channel spacer is formed by superposing a first yarn row and a second yarn row, and includes alternately a first mesh structure having a configuration in which first rectangular meshes formed of the yarn rows are continuous in an extending direction of the second yarn row, and a second mesh structure having a configuration in which meshes are continuous in the extending direction of the second yarn row such that an interval in the second yarn row is smaller than an interval of the second yarn row forming the first mesh structure.Type: GrantFiled: June 21, 2017Date of Patent: November 1, 2022Assignee: NITTO DENKO CORPORATIONInventors: Yuha Okazaki, Yasuhiro Uda
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Patent number: 11433356Abstract: Provided is a spiral membrane element that has a restricted outer diameter and is capable of being decreased in operation energy therefor. The element is a spiral membrane element including plural membrane leaves in each of which a permeation-side flow-channel member is interposed between opposed separation membranes a supply-side flow-channel member interposed between any two of the membrane leaves a perforated central pipe on which the membrane leaves and the supply-side flow-channel member are wound and a sealing part that prevents a supply-side flow-channel member from being mixed with a permeation-side flow-channel member. This element has an efficiency index E of 0.005 to 0.10, and the thickness of the supply-side flow-channel member is from 10 to 110 mil.Type: GrantFiled: September 15, 2017Date of Patent: September 6, 2022Assignee: Nitto Denko CorporationInventors: Mieko Nishi, Yasuhiro Uda
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Patent number: 11305237Abstract: Provided is a spiral membrane element that has a restricted outer diameter and is capable of being decreased in operation energy therefor. The element is a spiral membrane element including plural membrane leaves in each of which a permeation-side flow-channel member is interposed between opposed separation membranes a supply-side flow-channel member interposed between any two of the membrane leaves a perforated central pipe on which the membrane leaves and the supply-side flow-channel member are wound and a sealing part that prevents a supply-side flow-channel member from being mixed with a permeation-side flow-channel member. This element has an efficiency index E of 0.005 to 0.10, and the thickness of the supply-side flow-channel member is from 10 to 110 mil.Type: GrantFiled: September 15, 2017Date of Patent: April 19, 2022Assignee: Nitto Denko CorporationInventors: Mieko Nishi, Yasuhiro Uda
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Patent number: 11273414Abstract: Provided is a spiral membrane element that has a restricted outer diameter and is capable of being decreased in operation energy therefor. The element is a spiral membrane element including plural membrane leaves in each of which a permeation-side flow-channel member is interposed between opposed separation membranes a supply-side flow-channel member interposed between any two of the membrane leaves a perforated central pipe on which the membrane leaves and the supply-side flow-channel member are wound and a sealing part that prevents a supply-side flow-channel member from being mixed with a permeation-side flow-channel member. This element has an efficiency index E of 0.005 to 0.10, and the thickness of the supply-side flow-channel member is from 10 to 110 mil.Type: GrantFiled: September 15, 2017Date of Patent: March 15, 2022Assignee: Nitto Denko CorporationInventors: Mieko Nishi, Yasuhiro Uda
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Publication number: 20210213390Abstract: A flow path spacer (13) of the present disclosure includes a plurality of first linear portions (21) and a plurality of second linear portions (22).Type: ApplicationFiled: April 23, 2019Publication date: July 15, 2021Inventors: Yuha OKAZAKI, Yasuhiro UDA
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Publication number: 20210205761Abstract: A spacer (13) of the present disclosure includes a plurality of first linear portions (21) and a plurality of second linear portions (22). The plurality of first linear portions (21) and the plurality of second linear portions (22) intersect each other to form a first opening portion (31) and a second opening portion (32) each having a diagonal line (31a or 32a) parallel to a predetermined direction, an opening area of the second opening portion (32) is smaller than an opening area of the first opening portion (31), and the difference between the length of the diagonal line (31a) of the first opening portion (31) and the length of the diagonal line (32a) of the second opening portion (32) is in the range of 10 to 35% of the length of the diagonal line (31a) of the first opening portion (31).Type: ApplicationFiled: April 23, 2019Publication date: July 8, 2021Inventors: Yuha OKAZAKI, Yasuhiro UDA
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Patent number: 10987632Abstract: A spiral membrane element is provided which has a restricted outer diameter but is heightened in effective membrane area, and further which can be decreased in operation energy therefor. The spiral membrane element is an element including plural membrane leaves L in each of which a permeation-side flow-channel member 3 is interposed between opposed separation membranes 1; a supply-side flow-channel member 2 interposed between any two of the membrane leaves L; a perforated central pipe 5 on which the membrane leaves L and the supply-side flow-channel member 2 are wound; and sealing parts that prevent a supply-side flow-channel from being mixed with a permeation-side flow-channel. The sealing parts include both-end sealing parts 11 in which an adhesive is used to seal two-side end parts of each of the membrane leaves L on both sides of the leaf in an axial direction A1 of the leaf. The thickness T1 of the both-end sealing parts 11 is 390 to 540 ?m.Type: GrantFiled: September 15, 2017Date of Patent: April 27, 2021Inventors: Mieko Nishi, Yasuhiro Uda
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Patent number: 10960356Abstract: Provided is a membrane module which has a simple and easy structure to restrain its vessel from being increased in costs, and which allows to fabricate the vessel by a simple and easy work, and further to locate an inlet for a fluid, and others at respective predetermined positions of the membrane module.Type: GrantFiled: February 24, 2017Date of Patent: March 30, 2021Assignee: NITTO DENKO CORPORATIONInventors: Yasuhiro Uda, Kentarou Kobayashi
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Patent number: 10906004Abstract: Provided is a spiral membrane module which is suitable for being set up in the vertical direction since at one end of its pressure vessel, the supply of feed liquid and the discharge of concentrated liquid can be attained.Type: GrantFiled: March 29, 2017Date of Patent: February 2, 2021Assignee: NITTO DENKO CORPORATIONInventors: Yasuhiro Uda, Kentarou Kobayashi
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Patent number: 10874993Abstract: Provided are an inexpensive, high-quality, permeation-side flow path material that is suitable for use in spiral membrane elements and enables the improvement of productivity, a method for producing such a permeation-side flow path material, and a membrane element having such a permeation-side flow path material. Provided are (a) a permeation-side flow path material for use in a spiral membrane element, the permeation-side flow path material comprising a resin sheet comprising a plurality of ridge portions 31 formed parallel to one another; and a plurality of openings 32 formed between each pair of the ridge portions 31, (b) a method for producing such a permeation-side flow path material, and (c) a membrane element having such a permeation-side flow path material.Type: GrantFiled: November 12, 2015Date of Patent: December 29, 2020Assignee: NITTO DENKO CORPORATIONInventor: Yasuhiro Uda
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Patent number: 10821403Abstract: The purpose of the present invention is to provide a highly reliable membrane module for removing hazardous components without the risk of a feed-source fluid and a concentrated fluid intermixing inside a hollow tube. The spiral wound separation membrane module is characterized in that: a spiral wound separation membrane element accommodated in a cylindrical container, the spiral wound separation membrane element having a structure in which a laminated body having a separation membrane, a feed-side spacer and a permeation-side spacer is wound around a porous hollow tube in a spiral shape, the feed-side spacer is positioned on a feed side of the separation membrane, the permeation-side spacer is positioned on a permeation side of the separation membrane, and a feed-side flow path and a permeation-side flow path are sealed so as not to communicate directly with each other.Type: GrantFiled: October 5, 2016Date of Patent: November 3, 2020Assignee: NITTO DENKO CORPORATIONInventors: Yasuhiro Uda, Toshiyuki Kawashima
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Patent number: 10717049Abstract: A membrane element includes a central pipe having, in its outer periphery, holes; a membrane wound body in which a membrane member is wound on the central pipe; end members arranged, respectively, at both ends of the membrane wound body; and an exterior member fitted to at least an outer periphery of the membrane wound body. In this element, the exterior member includes a fiber reinforced resin having a reinforcing fiber wound on the outer periphery of the membrane wound body; the end members each includes flexible portions extended from a main body toward the membrane wound body; and the reinforcing fiber is wound also onto an outer periphery of the flexible portions in a state that the flexible portions are deformed toward an outer peripheral surface of the membrane wound body.Type: GrantFiled: December 20, 2016Date of Patent: July 21, 2020Assignee: NITTO DENKO CORPORATIONInventors: Hideki Matsuda, Shinichi Chikura, Yasuhiro Uda
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Publication number: 20200164315Abstract: A raw water channel spacer capable of suppressing formation of a concentration polarization layer in a region in the vicinity of a separation membrane in a raw water channel, and a spiral wound membrane element including the same are provided. A raw water channel spacer is formed by superposing a first yarn row and a second yarn row, and includes alternately a first mesh structure having a configuration in which first rectangular meshes formed of the yarn rows are continuous in an extending direction of the second yarn row, and a second mesh structure having a configuration in which meshes are continuous in the extending direction of the second yam row such that an interval in the second yarn row is smaller than an interval of the second yarn row forming the first mesh structure.Type: ApplicationFiled: June 21, 2017Publication date: May 28, 2020Applicant: NITTO DENKO CORPORATIONInventors: Yuha OKAZAKI, Yasuhiro UDA
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Publication number: 20200070096Abstract: Provided is a spiral membrane module which is suitable for being set up in the vertical direction since at one end of its pressure vessel, the supply of feed liquid and the discharge of concentrated liquid can be attained.Type: ApplicationFiled: March 29, 2017Publication date: March 5, 2020Inventors: Yasuhiro Uda, Kentarou Kobayashi
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Publication number: 20190255487Abstract: Provided is a spiral membrane element that has a restricted outer diameter and is capable of being decreased in operation energy therefor. The element is a spiral membrane element including plural membrane leaves in each of which a permeation-side flow-channel member is interposed between opposed separation membranes; a supply-side flow-channel member interposed between any two of the membrane leaves; a perforated central pipe on which the membrane leaves and the supply-side flow-channel member are wound; and a sealing part that prevents a supply-side flow-channel member from being mixed with a permeation-side flow-channel member. This element has an efficiency index E of 0.005 to 0.10, the index being calculated in accordance with an expression described below, and the thickness of the supply-side flow-channel member is from 10 to 110 mil. Efficiency index: E=0.0024×X?0.Type: ApplicationFiled: September 15, 2017Publication date: August 22, 2019Inventors: Mieko Nishi, Yasuhiro Uda
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Publication number: 20190247794Abstract: A spiral membrane element is provided which has a restricted outer diameter but is heightened in effective membrane area, and further which can be decreased in operation energy therefor. The spiral membrane element is an element including plural membrane leaves L in each of which a permeation-side flow-channel member 3 is interposed between opposed separation membranes 1; a supply-side flow-channel member 2 interposed between any two of the membrane leaves L; a perforated central pipe 5 on which the membrane leaves L and the supply-side flow-channel member 2 are wound; and sealing parts that prevent a supply-side flow-channel from being mixed with a permeation-side flow-channel. The sealing parts include both-end sealing parts 11 in which an adhesive is used to seal two-side end parts of each of the membrane leaves L on both sides of the leaf in an axial direction A1 of the leaf. The thickness T1 of the both-end sealing parts 11 is 390 to 540 ?m.Type: ApplicationFiled: September 15, 2017Publication date: August 15, 2019Applicant: Nitto Denko CorporationInventors: Mieko Nishi, Yasuhiro Uda
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Publication number: 20190111397Abstract: Provided is a membrane module which has a simple and easy structure to restrain its vessel from being increased in costs, and which allows to fabricate the vessel by a simple and easy work, and further to locate an inlet for a fluid, and others at respective predetermined positions of the membrane module.Type: ApplicationFiled: February 24, 2017Publication date: April 18, 2019Applicant: Nitto Denko CorporationInventors: Yasuhiro UDA, Kentarou KOBAYASHI
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Publication number: 20190060837Abstract: The purpose of the present invention is to provide a highly reliable membrane module for removing hazardous components without the risk of a feed-source fluid and a concentrated fluid intermixing inside a hollow tube. The spiral wound separation membrane module is characterized in that: a spiral wound separation membrane element accommodated in a cylindrical container, the spiral wound separation membrane element having a structure in which a laminated body having a separation membrane, a feed-side spacer and a permeation-side spacer is wound around a porous hollow tube in a spiral shape, the feed-side spacer is positioned on a feed side of the separation membrane, the permeation-side spacer is positioned on a permeation side of the separation membrane, and a feed-side flow path and a permeation-side flow path are sealed so as not to communicate directly with each other.Type: ApplicationFiled: October 5, 2016Publication date: February 28, 2019Applicant: NITTO DENKO CORPORATIONInventors: Yasuhiro UDA, Toshiyuki KAWASHIMA
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Publication number: 20190009220Abstract: A membrane element includes a central pipe having, in its outer periphery, holes; a membrane wound body in which a membrane member is wound on the central pipe; end members arranged, respectively, at both ends of the membrane wound body; and an exterior member fitted to at least an outer periphery of the membrane wound body. In this element, the exterior member includes a fiber reinforced resin having a reinforcing fiber wound on the outer periphery of the membrane wound body; the end members each includes flexible portions extended from a main body toward the membrane wound body; and the reinforcing fiber is wound also onto an outer periphery of the flexible portions in a state that the flexible portions are deformed toward an outer peripheral surface of the membrane wound body.Type: ApplicationFiled: December 20, 2016Publication date: January 10, 2019Applicant: NITTO DENKO CORPORATIONInventors: Hideki MATSUDA, Shinichi CHIKURA, Yasuhiro UDA