Patents by Inventor Junsuke Morita
Junsuke Morita 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: 9795932Abstract: The purpose of the present invention is to provide a porous hollow fiber membrane that can efficiently separate and remove the substances to be removed such as small-particle virus contained in a solution and, at the same time, useful recovering substances such as protein can be efficiently permeated and the decrease of its transmission rate with elapse of time is small. The porous hollow fiber membrane of the present invention is characterized in that the filtration downstream surface thereof has dot-shaped or slit-shaped pores, the filtration upstream surface thereof is a network structure or a fine particle aggregate structure, the central region of the membrane is composed of a substantially homogeneous structure, the membrane wall is composed of a structure having substantially no macrovoids, the permeability for pure water is 10 to 300 L/(h·m2·bar) and the permeability for a 0.1% by weight solution of bovine ?-globulin is 30 to 100% of the permeability for pure water.Type: GrantFiled: December 24, 2009Date of Patent: October 24, 2017Assignee: TOYO BOSEKI KABUSHIKI KAISHAInventors: Hideyuki Yokota, Noriaki Kato, Hirofumi Ogawa, Junsuke Morita
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Patent number: 9550153Abstract: The present invention provides a porous polymer flat-sheet membrane for MBR wherein surface of the porous polymer membrane is kept hydrophilic for a long period and high water permeability and anti-fouling properties are kept. A porous polymer flat-sheet membrane for MBR comprising a hydrophobic porous polymer membrane forming a network structure and a sheet substrate supporting it, characterized in that at least surface of the porous polymer membrane is coated and fixed with an insolubilized hydroxypropyl cellulose, that a ratio of the hydroxypropyl cellulose to the porous polymer membrane is 0.4 to 1.0% by weight and that, when NMR spectrum of the hydroxypropyl cellulose coated on and fixed to the membrane is measured using a nuclear magnetic resonance apparatus (proton NMR), an intensity ratio (B/A) of a spectral peak (B) appearing at 4.12 ppm to a spectral peak (A) appearing at 3.75 ppm is 12 to 30%.Type: GrantFiled: December 11, 2013Date of Patent: January 24, 2017Assignee: TOYOBO CO., LTD.Inventors: Junsuke Morita, Masao Higashi, Norifumi Shimada, Tooru Kitagawa
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Patent number: 9211509Abstract: To provide a reverse osmosis membrane where both salt rejection rate and water permeability required for wastewater treatment are achieved in a high level in spite of using the materials having excellent resistance to chemicals (resistance to alkali and to chlorine). A reverse osmosis membrane for wastewater treatment comprising a sulfonated poly(arylene ether sulfone) polymer containing a constituting component represented by the following formula [I], characterized in that, in a proton nuclear magnetic resonance spectrum where water molecules in the membrane are measured using the reverse osmosis membrane in a water-containing state, the relation between the chemical shift A (ppm) of spectral peak top derived from bound water and the chemical shift B (ppm) of spectral peak top derived from bulk water satisfies (B?0.36)?A<(B?0.30): wherein X is H or a univalent cationic species and n is an integer of 10 to 50.Type: GrantFiled: June 14, 2012Date of Patent: December 15, 2015Assignee: TOYOBO CO., LTD.Inventors: Masao Higashi, Junsuke Morita, Tooru Kitagawa
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Publication number: 20150328591Abstract: The present invention provides a porous polymer flat-sheet membrane for MBR wherein surface of the porous polymer membrane is kept hydrophilic for a long period and high water permeability and anti-fouling properties are kept. A porous polymer flat-sheet membrane for MBR comprising a hydrophobic porous polymer membrane forming a network structure and a sheet substrate supporting it, characterized in that at least surface of the porous polymer membrane is coated and fixed with an insolubilized hydroxypropyl cellulose, that a ratio of the hydroxypropyl cellulose to the porous polymer membrane is 0.4 to 1.0% by weight and that, when NMR spectrum of the hydroxypropyl cellulose coated on and fixed to the membrane is measured using a nuclear magnetic resonance apparatus (proton NMR), an intensity ratio (B/A) of a spectral peak (B) appearing at 4.12 ppm to a spectral peak (A) appearing at 3.75 ppm is 12 to 30%.Type: ApplicationFiled: December 11, 2013Publication date: November 19, 2015Applicant: TOYOBO CO., LTD.Inventors: Junsuke Morita, Masao Higashi, Norifumi Shimada, Tooru Kitagawa
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Publication number: 20150136692Abstract: To provide a reverse osmosis membrane where both salt rejection rate and water permeability required for wastewater treatment are achieved in a high level in spite of using the materials having excellent resistance to chemicals (resistance to alkali and to chlorine). A reverse osmosis membrane for wastewater treatment comprising a sulfonated poly(arylene ether sulfone) polymer containing a constituting component represented by the following formula [I], characterized in that, in a proton nuclear magnetic resonance spectrum where water molecules in the membrane are measured using the reverse osmosis membrane in a water-containing state, the relation between the chemical shift A (ppm) of spectral peak top derived from bound water and the chemical shift B (ppm) of spectral peak top derived from bulk water satisfies (B?0.36)?A<(B?0.30): wherein X is H or a univalent cationic species and n is an integer of 10 to 50.Type: ApplicationFiled: June 14, 2012Publication date: May 21, 2015Applicant: TOYOBO CO., LTD.Inventors: Masao Higashi, Junsuke Morita, Tooru Kitagawa
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Patent number: 8881915Abstract: PURPOSE: To provide a polymeric porous hollow fiber membrane which exhibits excellent fractionation performance and excellent permeability in treatment of a variety of aqueous fluids and also shows sufficient strength when incorporated into a module or used to treat a fluid, and which is excellent in aging stability in these performances and characteristics and is also excellent in membrane performance recoverability by washing, and which is especially suitable for treatment of a polyphenol-containing beverage and is expected to effectively harmonize the flavor of such a beverage.Type: GrantFiled: April 25, 2007Date of Patent: November 11, 2014Assignee: Toyo Boseki Kabushiki KaishaInventors: Hideyuki Yokota, Noriaki Kato, Hirofumi Ogawa, Junsuke Morita
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Patent number: 8225941Abstract: The present invention provides a hollow fiber membrane for treating liquids. When used for a hollow fiber membrane module for refining a fermented liquid such as beer or wine, the hollow fiber membrane exhibits a high filtration performance per unit area thereof, with reduced clogging of the membrane. The membrane performance is sufficiently recovered by washing. The present invention is a hollow fiber membrane for treating liquids, wherein a ratio of Flux 120 to Flux 30 is 0.45 or higher when filtration is performed by supplying a solution having a turbidity of 20 NTU into a hollow fiber membrane having an internal diameter of 500 to 1500 ?m and a membrane thickness of 100 to 500 ?m with a transmembrane pressure of 1.5 bar, the Flux 30 being flux 30 minutes after the start of the filtration, the Flux 120 being flux 120 minutes after the start of the filtration.Type: GrantFiled: October 16, 2008Date of Patent: July 24, 2012Assignee: Toyo Boseki Kabushiki KaishaInventors: Hirofumi Ogawa, Noriaki Kato, Hideyuki Yokota, Junsuke Morita
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Publication number: 20110259816Abstract: The purpose of the present invention is to provide a porous hollow fiber membrane that can efficiently separate and remove the substances to be removed such as small-particle virus contained in a solution and, at the same time, useful recovering substances such as protein can be efficiently permeated and the decrease of its transmission rate with elapse of time is small. The porous hollow fiber membrane of the present invention is characterized in that the filtration downstream surface thereof has dot-shaped or slit-shaped pores, the filtration upstream surface thereof is a network structure or a fine particle aggregate structure, the central region of the membrane is composed of a substantially homogeneous structure, the membrane wall is composed of a structure having substantially no macrovoids, the permeability for pure water is 10 to 300 L/(h·m2·bar) and the permeability for a 0.1% by weight solution of bovine ?-globulin is 30 to 100% of the permeability for pure water.Type: ApplicationFiled: December 24, 2009Publication date: October 27, 2011Applicant: TOYO BOSEKI KABUSHIKI KAISHAInventors: Hideyuki Yokota, Noriaki Kato, Hirofumi Ogawa, Junsuke Morita
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Publication number: 20100219122Abstract: The present invention provides a hollow fiber membrane for treating liquids. When used for a hollow fiber membrane module for refining a fermented liquid such as beer or wine, the hollow fiber membrane exhibits a high filtration performance per unit area thereof, with reduced clogging of the membrane. The membrane performance is sufficiently recovered by washing. The present invention is a hollow fiber membrane for treating liquids, wherein a ratio of Flux 120 to Flux 30 is 0.45 or higher when filtration is performed by supplying a solution having a turbidity of 20 NTU into a hollow fiber membrane having an internal diameter of 500 to 1500 ?m and a membrane thickness of 100 to 500 ?m with a transmembrane pressure of 1.5 bar, the Flux 30 being flux 30 minutes after the start of the filtration, the Flux 120 being flux 120 minutes after the start of the filtration.Type: ApplicationFiled: October 16, 2008Publication date: September 2, 2010Applicant: TOYO BOSEKI KABUSHIKI KAISHAInventors: Hirofumi Ogawa, Noriaki Kato, Hideyuki Yokota, Junsuke Morita
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Publication number: 20090110900Abstract: Purpose: To provide a polymeric porous hollow fiber membrane which exhibits excellent fractionation performance and excellent permeability in treatment of a variety of aqueous fluids and also shows sufficient strength when incorporated into a module or used to treat a fluid, and which is excellent in aging stability in these performances and characteristics and is also excellent in membrane performance recoverability by washing, and which is especially suitable for treatment of a polyphenol-containing beverage and is expected to effectively harmonize the flavor of such a beverage.Type: ApplicationFiled: April 25, 2007Publication date: April 30, 2009Applicant: TOYO BOSEKI KABUSHIKI KAISHAInventors: Hideyuki Yokota, Noriaki Kato, Hirofumi Ogawa, Junsuke Morita