Patents by Inventor Atsuko Mizuike
Atsuko Mizuike 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: 10918996Abstract: The present invention provides a spiral membrane element in which the effective membrane area of a composite semi-permeable membrane can be increased and any decrease in rejection rate is less likely to occur. The spiral membrane element includes: a laminate including a permeation-side flow path material, a supply-side flow path material, and a composite semi-permeable membrane having a separation function layer on a surface of a porous support; a perforated central tube around which the laminate is wound; and a sealing member for preventing mixing between the supply-side flow path and a permeation-side flow path, the spiral membrane element being characterized in that the thickness of the porous support of the composite semi-permeable membrane is 80 ?m to 100 ?m, the permeation-side flow path material is formed from a tricot knit fabric, and the width of a groove that continues in a straight line is 0.05 mm to 0.40 mm.Type: GrantFiled: September 24, 2015Date of Patent: February 16, 2021Assignee: NITTO DENKO CORPORATIONInventors: Taisuke Yamaguchi, Atsuko Mizuike, Masashi Echizen, Kazusa Matsui
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Patent number: 10230097Abstract: A nonaqueous electrolyte secondary battery is provided, which includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and negative electrode, and an electrolyte solution containing a supporting salt having ion conductivity, wherein the positive electrode comprises a composition containing components (a) and (b) below and satisfying a requirement (?) below, and wherein the negative electrode contains metal lithium and at least one selected from materials capable of lithium ion insertion/desorption: (a) an electrically conductive polymer; (b) a lithium salt formed by substituting a part of a polyanionic acid with lithium; and (?) a molar ratio of a lithium element content in the component (b) to a content of an element involved in a charge/discharge reaction in the component (a) is 0.1 to 1.0. Consequently, the nonaqueous electrolyte secondary battery has an excellent weight energy density and can reduce dependency on electrolyte solution amount.Type: GrantFiled: December 24, 2013Date of Patent: March 12, 2019Assignee: NITTO DENKO CORPORATIONInventors: Hiroyoshi Take, Atsuko Mizuike, Aimi Matsuura, Masao Abe
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Publication number: 20170304775Abstract: The present invention provides a spiral membrane element in which the effective membrane area of a composite semi-permeable membrane can be increased and any decrease in rejection rate is less likely to occur. The spiral membrane element includes: a laminate including a permeation-side flow path material, a supply-side flow path material, and a composite semi-permeable membrane having a separation function layer on a surface of a porous support; a perforated central tube around which the laminate is wound; and a sealing member for preventing mixing between the supply-side flow path and a permeation-side flow path, the spiral membrane element being characterized in that the thickness of the porous support of the composite semi-permeable membrane is 80 ?m to 100 ?m, the permeation-side flow path material is formed from a tricot knit fabric, and the width of a groove that continues in a straight line is 0.05 mm to 0.40 mm.Type: ApplicationFiled: September 24, 2015Publication date: October 26, 2017Applicant: NITTO DENKO CORPORATIONInventors: Taisuke YAMAGUCHI, Atsuko MIZUIKE, Masashi ECHIZEN, Kazusa MATSUI
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Publication number: 20170282129Abstract: The purpose of the present invention is to provide: a thin composite semipermeable membrane having a practical salt rejection and permeation flux; a method for producing said membrane; and a spiral wound separation membrane element that has a practical salt rejection and provides excellent water treatment efficiency. The method for producing the composite semipermeable membrane includes a step in while, while feeding out a porous support having a porous polymer layer on one surface of a nonwoven fabric layer from a supply roll, an amine solution containing a multifunctional amine component is brought into contact with the porous support, and an organic solution containing a multifunctional acid halide component is brought into contact with the amine solution on the porous support to cause interfacial polymerization, thus forming a skin layer containing a polyamide resin on the surface of the porous support.Type: ApplicationFiled: September 28, 2015Publication date: October 5, 2017Applicant: NITTO DENKO CORPORATIONInventors: Kazusa MATSUI, Masashi ECHIZEN, Atsuko MIZUIKE, Taisuke YAMAGUCHI
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Publication number: 20170274328Abstract: Provided are a composite semipermeable membrane that will maintain a sufficient level of rejection performance even when produced using different thicknesses of a porous support or different production conditions, a separation membrane element having such a composite semipermeable membrane, and a method for producing such a composite semipermeable membrane. The composite semipermeable membrane includes a porous support including a nonwoven fabric layer and a polymer porous layer on one surface of the nonwoven fabric layer; and a separation function layer on the surface of the porous support, wherein the porous support has a defect frequency F1 of 50 or less per 480 m2 with respect to defects having a width of 0.3 mm or more perpendicular to the direction of the polymer porous layer production line, when the relationship between the size and frequency of defects in the porous support is measured with transmitted light.Type: ApplicationFiled: August 28, 2015Publication date: September 28, 2017Applicant: NITTO DENKO CORPORATIONInventors: Atsuko MIZUIKE, Masashi ECHIZEN, Kazusa MATSUI, Taisuke YAMAGUCHI
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Patent number: 9504966Abstract: It is an object of the present invention to provide a composite semi-permeable membrane exhibiting excellent chemical resistance and having practical water permeability and salt-blocking property, and a method for producing the same. The present invention relates to a composite semi-permeable membrane, including a porous support and a skin layer formed on a surface of the porous support, wherein the porous support contains a thermosetting resin porous sheet having a three-dimensional network structure and pores communicating with each other and wherein the thermosetting resin porous sheet has an average pore diameter of 0.01 to 0.4 ?m.Type: GrantFiled: September 25, 2009Date of Patent: November 29, 2016Assignee: NITTO DENKO CORPORATIONInventors: Yoshihide Kawaguchi, Atsushi Hiro, Noriaki Harada, Osamu Hayashi, Atsuko Mizuike, Katsumi Ishii
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Patent number: 9186633Abstract: Disclosed is a method for easily producing a long porous thermosetting resin sheet which has no resin coating film on the surface. Also disclosed are a porous thermosetting resin sheet produced by the method, and a composite semipermeable membrane having excellent chemical resistance and practical water permeability and salt-blocking property. The porous thermosetting resin sheet can be produced by forming a cylindrical or columnar resin block which is composed of a cured product of a thermosetting resin composition containing a thermosetting resin, a curing agent and a porogen; then forming a long thermosetting resin sheet by cutting the surface of the resin block at a certain thickness; and then removing the porogen from the thermosetting resin sheet.Type: GrantFiled: October 23, 2009Date of Patent: November 17, 2015Assignee: NITTO DENKO CORPORATIONInventors: Noriaki Harada, Atsushi Hiro, Katsumi Ishii, Yoshihide Kawaguchi, Atsuko Mizuike, Osamu Hayashi
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Publication number: 20150325840Abstract: A novel nonaqueous electrolyte secondary battery having a high weight energy density far exceeding the weight energy density of a conventional secondary battery is provided. A nonaqueous electrolyte secondary battery including an electrolyte layer, a positive electrode and a negative electrode with the electrolyte layer interposed there between. The positive electrode includes (a) an electrically conductive polymer, and (b) a phosphorus-containing polymer. The negative electrode includes a base metal or a material capable of insertion/extraction of a base metal ion.Type: ApplicationFiled: December 16, 2013Publication date: November 12, 2015Applicant: NITTO DENKO CORPORATIONInventors: Atsuko MIZUIKE, Masao ABE
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Publication number: 20150318540Abstract: A nonaqueous electrolyte secondary battery is provided, which includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and negative electrode, and an electrolyte solution containing a supporting salt having ion conductivity, wherein the positive electrode comprises a composition containing components (a) and (b) below and satisfying a requirement (?) below, and wherein the negative electrode contains metal lithium and at least one selected from materials capable of lithium ion insertion/desorption: (a) an electrically conductive polymer; (b) a lithium salt formed by substituting a part of a polyanionic acid with lithium; and (?) a molar ratio of a lithium element content in the component (b) to a content of an element involved in a charge/discharge reaction in the component (a) is 0.1 to 1.0. Consequently, the nonaqueous electrolyte secondary battery has an excellent weight energy density and can reduce dependency on electrolyte solution amount.Type: ApplicationFiled: December 24, 2013Publication date: November 5, 2015Applicant: NITTO DENKO CORPORATIONInventors: Hiroyoshi TAKE, Atsuko MIZUIKE, Aimi MATSUURA, Masao ABE
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Publication number: 20150235777Abstract: A higher performance positive electrode for a power storage device is provided, which ensures a higher capacity density per unit weight of an active substance and, particularly, a higher initial capacity in initial charge/discharge. The power storage device positive electrode includes electrically conductive polymer particles as an active substance, and the electrically conductive polymer particles each have a flat shape.Type: ApplicationFiled: August 7, 2013Publication date: August 20, 2015Applicant: NITTO DENKO CORPORATIONInventors: Yohei Ando, Yutaka Kishii, Masao Abe, Yoshihiro Uetani, Hiroyoshi Take, Atsuko Mizuike
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Publication number: 20130248442Abstract: Provided is a porous epoxy resin sheet produced by cutting a cured epoxy resin body to a predetermined thickness, the porous epoxy resin sheet having a large surface area and a uniform in-plane pore size distribution. A method for producing a porous epoxy resin sheet, comprising forming a cylindrical or columnar cured resin body from a resin mixture containing an epoxy resin, a curing agent, and a porogen, cutting the surface of the cured resin body at a predetermined thickness to make an epoxy resin sheet, and then removing the porogen from the sheet to render the sheet porous, wherein when the cured resin body is formed from the resin mixture, curing is performed in a state where the viscosity of the mixture is at least 1,000 mPa·s.Type: ApplicationFiled: December 5, 2011Publication date: September 26, 2013Applicant: NITTO DENKO CORPORATIONInventors: Noriaki Harada, Yoshihide Kawaguchi, Atsushi Hiro, Atsuko Mizuike, Osamu Hayashi, Katsumi Ishii, Chiaki Harada
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Publication number: 20120228213Abstract: A separation membrane unit is provided with two separation membranes (1) which each have a separation active layer (4) formed on one surface of a sheet-like porous base material (3) and which are superposed on each other so that the separation active layers (4) face each other. The two separation membranes (1) are folded multiple times into pleats, and as a result, folds (5) are formed alternately on one side and the other side (top side and bottom side in FIG. 4A) of the two separation membranes (1). As a result of the two separation membranes (1) being superposed on each other so that the separation active layers (4) face each other, the separation active layers (4) are not exposed, and the simple configuration can prevent the separation active layers (4) from being damaged.Type: ApplicationFiled: June 22, 2010Publication date: September 13, 2012Inventors: Katsumi Ishii, Atsushi Hiro, Yoshihide Kawaguchi, Noriaki Harada, Osamu Hayashi, Atsuko Mizuike
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Publication number: 20110192788Abstract: Disclosed is a method for easily producing a long porous thermosetting resin sheet which has no resin coating film on the surface. Also disclosed are a porous thermosetting resin sheet produced by the method, and a composite semipermeable membrane having excellent chemical resistance and practical water permeability and salt-blocking property. The porous thermosetting resin sheet can be produced by forming a cylindrical or columnar resin block which is composed of a cured product of a thermosetting resin composition containing a thermosetting resin, a curing agent and a porogen; then forming a long thermosetting resin sheet by cutting the surface of the resin block at a certain thickness; and then removing the porogen from the thermosetting resin sheet.Type: ApplicationFiled: October 23, 2009Publication date: August 11, 2011Inventors: Noriaki Harada, Atsushi Hiro, Katsumi Ishii, Yoshihide Kawaguchi, Atsuko Mizuike, Osamu Hayashi
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Publication number: 20110174723Abstract: It is an object of the present invention to provide a composite semi-permeable membrane exhibiting excellent chemical resistance and having practical water permeability and salt-blocking property, and a method for producing the same. The present invention relates to a composite semi-permeable membrane, including a porous support and a skin layer formed on a surface of the porous support, wherein the porous support contains a thermosetting resin porous sheet having a three-dimensional network structure and pores communicating with each other and wherein the thermosetting resin porous sheet has an average pore diameter of 0.01 to 0.4 ?m.Type: ApplicationFiled: September 25, 2009Publication date: July 21, 2011Inventors: Yoshihide Kawaguchi, Atsushi Hiro, Noriaki Harada, Osamu Hayashi, Atsuko Mizuike, Katsumi Ishii
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Publication number: 20100273260Abstract: The present invention relates to a cell culture substrate in which a polymer chain having a hydrophilic skeleton is grafted onto a surface of polystyrene or poly(?-caprolactone) having a water contact angle of from 75° to 100°. This cell culture substrate has excellent efficiency of cell culture without the necessity of immobilization and adsorption of a cell adhesion substance on a surface of a substrate.Type: ApplicationFiled: July 10, 2008Publication date: October 28, 2010Applicant: NITTO DENKO CORPORATIONInventors: Chiharu Odane, Sakura Toshikawa, Atsuko Mizuike, Hiroyuki Nishii, Takuji Shintani, Carsten Werner, Mirko Nitschke, Walter Eevers