Patents by Inventor Kentarou Takagi
Kentarou Takagi 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: 11511233Abstract: According to the present invention, it is possible to obtain a separation membrane element which has an element configuration having high fresh water production performance and high removal performance, has an improved membrane surface linear velocity whereby fouling due to hardly-soluble salts (scales) or organic matters is less likely to occur on the membrane surface particularly in high recovery ratio operation, and is excellent in fresh water production performance and removal performance over a long period of time.Type: GrantFiled: September 11, 2017Date of Patent: November 29, 2022Assignee: TORAY INDUSTRIES, INC.Inventors: Takeshi Konda, Kentarou Takagi, Hiroho Hirozawa, Hiroyuki Yamada, Hiroki Minehara, Hiroaki Tanaka, Monami Suzuki, Yutaro Suzuki
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Patent number: 11065580Abstract: According to the present invention, even when a high recovery ratio operation is performed, the influence of concentration of ingredients to be separated in the feed fluid can be reduced, the concentration polarization can be prevented by increasing the turbulence effect on the membrane surface, and the fluid permeation performance and the separation performance of the separation membrane element can be maintained.Type: GrantFiled: October 24, 2017Date of Patent: July 20, 2021Assignee: TORAY INDUSTRIES, INC.Inventors: Yoshiki Okamoto, Akshay Garg, Kentarou Takagi, Hiroho Hirozawa, Tamotsu Kitade
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Publication number: 20190282962Abstract: According to the present invention, it is possible to obtain a separation membrane element which has an element configuration having high fresh water production performance and high removal performance, has an improved membrane surface linear velocity whereby fouling due to hardly-soluble salts (scales) or organic matters is less likely to occur on the membrane surface particularly in high recovery ratio operation, and is excellent in fresh water production performance and removal performance over a long period of time.Type: ApplicationFiled: September 11, 2017Publication date: September 19, 2019Applicant: TORAY INDUSTRIES, INC.Inventors: Takeshi KONDA, Kentarou TAKAGI, Hiroho HIROZAWA, Hiroyuki YAMADA, Hiroki MINEHARA, Hiroaki TANAKA, Monami SUZUKI, Yutaro SUZUKI
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Publication number: 20190262775Abstract: According to the present invention, even when a high recovery ratio operation is performed, the influence of concentration of ingredients to be separated in the feed fluid can be reduced, the concentration polarization can be prevented by increasing the turbulence effect on the membrane surface, and the fluid permeation performance and the separation performance of the separation membrane element can be maintained.Type: ApplicationFiled: October 24, 2017Publication date: August 29, 2019Applicant: TORAY INDUSTRIES, INC.Inventors: Yoshiki OKAMOTO, Akshay GARG, Kentarou TAKAGI, Hiroho HIROZAWA, Tamotsu KITADE
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Publication number: 20190160435Abstract: The present invention relates to a separation membrane element for use in separation of ingredients contained in fluids such as liquid and gas. An object of the present invention is to provide a separation membrane element which, even when used in a high-recovery ratio operation, has high fresh-water production performance and high removal performance and is less apt to suffer scaling.Type: ApplicationFiled: July 26, 2017Publication date: May 30, 2019Applicant: TORAY INDUSTRIES, INC.Inventors: Hiroho HIROZAWA, Kentarou TAKAGI, Yoshiki OKAMOTO, Satoshi KATO, Takeshi KONDA, Hiroyuki YAMADA, Tamotsu KITADE, Akshay GARG
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Patent number: 9764291Abstract: A spiral separation membrane element including a plurality of separation membrane pairs wound around the outer peripheral surface of a water collection pipe, wherein the plurality of separation membranes include at least two sets of separation membrane pairs in which two adjacent separation membranes are stacked such that the water supply sides of the separation membranes form opposing surfaces, and the water supply-side surfaces at the ends of separation membranes close to the water collection pipe and parallel to the lengthwise direction of the water collection pipe are sealed by a sealing material.Type: GrantFiled: March 23, 2012Date of Patent: September 19, 2017Assignee: Toray Industries, Inc.Inventors: Hiroho Hirozawa, Hiroshi Umetani, Masakazu Koiwa, Kentarou Takagi, Masahiro Kimura
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Patent number: 9387445Abstract: To provide a separation membrane element that is able to increase the amount of permeate fluid per unit time and also able to improve stability performance, provided is a separation membrane element, comprising a separation membrane and a permeate spacer, wherein a separation functional layer is arranged on the surface of said separation membrane and a nonwoven fabric served as a substrate is arranged on the back surface of said separation membrane, wherein said permeate spacer is arranged on the back surface side of said substrate, wherein said permeate spacer is made of a different material from said separation membrane, and a projection area ratio of said permeate spacer to said separation membrane is 0.03 to 0.80.Type: GrantFiled: June 2, 2011Date of Patent: July 12, 2016Assignee: TORAY INDUSTRIES, INC.Inventors: Masahiro Kimura, Katsufumi Oto, Kentarou Takagi, Hiroho Hirozawa, Masakazu Koiwa, Yutaro Suzuki
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Publication number: 20140224726Abstract: To provide a separation membrane element that is able to increase the amount of permeate fluid per unit time and also able to improve stability performance, provided is a separation membrane element, comprising a separation membrane and a permeate spacer, wherein a separation functional layer is arranged on the surface of said separation membrane and a nonwoven fabric served as a substrate is arranged on the back surface of said separation membrane, wherein said permeate spacer is arranged on the back surface side of said substrate, wherein said permeate spacer is made of a different material from said separation membrane, and a projection area ratio of said permeate spacer to said separation membrane is 0.03 to 0.80.Type: ApplicationFiled: June 2, 2011Publication date: August 14, 2014Applicant: TORAY INDUSTRIES, INC.Inventors: Masahiro Kimura, Katsufumi Oto, Kentarou Takagi, Hiroho Hirozawa, Masakazu Koiwa, Yutaro Suzuki
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Publication number: 20140014569Abstract: A spiral separation membrane element including a plurality of separation membrane pairs wound around the outer peripheral surface of a water collection pipe, wherein the plurality of separation membranes include at least two sets of separation membrane pairs in which two adjacent separation membranes are stacked such that the water supply sides of the separation membranes form opposing surfaces, and the water supply-side surfaces at the ends of separation membranes close to the water collection pipe and parallel to the lengthwise direction of the water collection pipe are sealed by a sealing material.Type: ApplicationFiled: March 23, 2012Publication date: January 16, 2014Applicant: Toray Industries, Inc.Inventors: Hiroho Hirozawa, Hiroshi Umetani, Masakazu Koiwa, Kentarou Takagi, Masahiro Kimura