Patents by Inventor Yoshie Marutani
Yoshie Marutani 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: 10974205Abstract: A composite semipermeable membrane includes a porous supporting membrane and a separation functional layer, in which, in cross-sections having a length of 2.0 ?m in a membrane surface direction, the average number density of projections in the separation functional layer which have a height of one-fifth or more of the 10-point average surface roughness is 10.0-30.0 projections/?m and the projections have an average height less than 100 nm, and in which a water production rate and a salt rejection are predetermined values or more after an aqueous solution is passed through under certain conditions.Type: GrantFiled: June 27, 2013Date of Patent: April 13, 2021Assignee: Toray Industries, Inc.Inventors: Harutoki Shimura, Yoshie Marutani, Koji Nakatsuji, Kiyohiko Takaya, Masakazu Koiwa, Takao Sasaki, Masahiro Kimura
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Patent number: 10159942Abstract: The present invention provides a separation membrane and a separation membrane element capable of exhibiting a good water production performance even at a high temperature and also excellent handleability and quality. The separation membrane of the present invention includes a separation membrane main body having a feed-side face and a permeate-side face; and a permeate-side channel member fixed onto the permeate-side face of the separation membrane main body, and the permeate-side channel member includes polypropylene as a main component and satisfies the following requirements (a) to (c): (a) a softening point temperature is 60° C. or higher; (b) a tensile elongation in a standard state is 10% or more; and (c) a yield point stress under a wet condition at 50° C. is 2 MPa or more.Type: GrantFiled: January 29, 2015Date of Patent: December 25, 2018Assignee: TORAY INDUSTRIES, INC.Inventors: Yoshie Marutani, Hiroyuki Yamada, Hiroho Hirozawa, Kentaro Takagi, Yoshiki Okamoto, Shunsuke Tabayashi, Hiroshi Umetani, Akira Katayama, Takao Sasaki, Masahiro Kimura
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Patent number: 9808767Abstract: A separation membrane element of the present invention includes: a water collection tube; and a plurality of separation membrane leaves stacked on each other and wound around the water collection tube, each of the separation membrane leaves includes one or more separation membranes each having a feed-side face and a permeate-side face and is configured so that the feed-side faces face each other, and a sheet having a plurality of projections fixed thereto is provided between the permeate-side faces of the separation membrane leaves stacked on each other. Regarding a height of the projections, a ratio of the maximum height to the minimum height is from 1.10 to 1.50, and a variation coefficient of the height is from 0.02 to 0.15, and an impregnation ratio of the projections into the sheet is from 10% to 100%.Type: GrantFiled: October 31, 2014Date of Patent: November 7, 2017Assignee: Toray Industries, Inc.Inventors: Shunsuke Tabayashi, Hiroho Hirozawa, Kentaro Takagi, Yoshie Marutani, Yoshiki Okamoto, Hiroyuki Yamada, Shuji Furuno, Takao Sasaki, Masahiro Kimura
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Patent number: 9802160Abstract: The present invention provides a separation membrane and a separation membrane element which are capable of exhibiting good water production performance and excellent in handleability and process passage. A separation membrane of the present invention is a separation membrane including: a separation membrane main body having a feed-side face and a permeate-side face; and a permeate-side channel member adhered to the permeate-side face of the separation membrane main body, in which the permeate-side channel member includes a composition containing at least a high-crystalline polypropylene (A) and satisfies the following requirements (a) and (b): (a) a content of the high-crystalline polypropylene (A) in the composition is from 40 to 95% by weight; and (b) the permeate-side channel member has a melting endothermic energy amount (?H) of from 20 to 70 J/g.Type: GrantFiled: October 30, 2014Date of Patent: October 31, 2017Assignee: TORAY INDUSTRIES, INC.Inventors: Hiroyuki Yamada, Hiroho Hirozawa, Kentaro Takagi, Yoshiki Okamoto, Yoshie Marutani, Shunsuke Tabayashi, Takao Sasaki, Masahiro Kimura, Yuji Tanaka
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Publication number: 20170001154Abstract: The present invention provides a separation membrane and a separation membrane element capable of exhibiting a good water production performance even at a high temperature and also excellent handleability and quality. The separation membrane of the present invention includes a separation membrane main body having a feed-side face and a permeate-side face; and a permeate-side channel member fixed onto the permeate-side face of the separation membrane main body, and the permeate-side channel member includes polypropylene as a main component and satisfies the following requirements (a) to (c): (a) a softening point temperature is 60° C. or higher; (b) a tensile elongation in a standard state is 10% or more; and (c) a yield point stress under a wet condition at 50° C. is 2 MPa or more.Type: ApplicationFiled: January 29, 2015Publication date: January 5, 2017Applicant: TORAY INDUSTRIES, INC.Inventors: Yoshie MARUTANI, Hiroyuki YAMADA, Hiroho HIROZAWA, Kentaro TAKAGI, Yoshiki OKAMOTO, Shunsuke TABAYASHI, Hiroshi UMETANI, Akira KATAYAMA, Takao SASAKI, Masahiro KIMURA
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Publication number: 20160303514Abstract: A separation membrane element of the present invention includes: a water collection tube; and a plurality of separation membrane leaves stacked on each other and wound around the water collection tube, each of the separation membrane leaves includes one or more separation membranes each having a feed-side face and a permeate-side face and is configured so that the feed-side faces face each other, and a sheet having a plurality of projections fixed thereto is provided between the permeate-side faces of the separation membrane leaves stacked on each other. Regarding a height of the projections, a ratio of the maximum height to the minimum height is from 1.10 to 1.50, and a variation coefficient of the height is from 0.02 to 0.15, and an impregnation ratio of the projections into the sheet is from 10% to 100%.Type: ApplicationFiled: October 31, 2014Publication date: October 20, 2016Applicant: TORAY INDUSTRIES, INC.Inventors: Shunsuke Tabayashi, Hiroho Hirozawa, Kentaro Takagi, Yoshie Marutani, Yoshiki Okamoto, Hiroyuki Yamada, Shuji Furuno, Takao Sasaki, Masahiro Kimura
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Publication number: 20160271564Abstract: The present invention provides a separation membrane and a separation membrane element which are capable of exhibiting good water production performance and excellent in handleability and process passage. A separation membrane of the present invention is a separation membrane including: a separation membrane main body having a feed-side face and a permeate-side face; and a permeate-side channel member adhered to the permeate-side face of the separation membrane main body, in which the permeate-side channel member includes a composition containing at least a high-crystalline polypropylene (A) and satisfies the following requirements (a) and (b): (a) a content of the high-crystalline polypropylene (A) in the composition is from 40 to 95% by weight; and (b) the permeate-side channel member has a melting endothermic energy amount (?H) of from 20 to 70 J/g.Type: ApplicationFiled: October 30, 2014Publication date: September 22, 2016Applicant: TORAY INDUSTRIES, INC.Inventors: Hiroyuki YAMADA, Hiroho HIROZAWA, Kentaro TAKAGI, Yoshiki OKAMOTO, Yoshie MARUTANI, Shunsuke TABAYASHI, Takao SASAKI, Masahiro KIMURA, Yuji TANAKA
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Publication number: 20150283515Abstract: An object of the invention is to provide a composite semipermeable membrane which has the high ability to remove substances other than water and high water permeability and which suffers little decrease in performance due to fouling. The invention relates to a composite semipermeable membrane including: a supporting membrane having a substrate and a porous supporting layer disposed on the substrate; and a separation functional layer disposed on the supporting membrane, in which, in any ten sites of cross-sections of the composite semipermeable membrane which have a width of 2.0 ?m in a membrane surface direction, the projections having a height of one-fifth or more of a 10-point average surface roughness of the separation functional layer have a standard deviation of height of 60 nm or less.Type: ApplicationFiled: June 27, 2013Publication date: October 8, 2015Applicant: Toray Industries, Inc.Inventors: Masakazu Koiwa, Tomoko Mitsuhata, Harutoki Shimura, Yoshie Marutani, Kiyohiko Takaya, Shunsuke Tabayashi, Takafumi Ogawa, Takao Sasaki, Masahiro Kimura, Masahiro Henmi
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Publication number: 20150190759Abstract: A composite semipermeable membrane includes a porous supporting membrane and a separation functional layer, in which, in cross-sections having a length of 2.0 ?m in a membrane surface direction, the average number density of projections in the separation functional layer which have a height of one-fifth or more of the 10-point average surface roughness is 10.0-30.0 projections/?m and the projections have an average height less than 100 nm, and in which a water production rate and a salt rejection are predetermined values or more after an aqueous solution is passed through under certain conditions.Type: ApplicationFiled: June 27, 2013Publication date: July 9, 2015Inventors: Harutoki Shimura, Yoshie Marutani, Koji Nakatsuji, Kiyohiko Takaya, Masakazu Koiwa, Takao Sasaki, Masahiro Kimura
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Publication number: 20140339152Abstract: A composite semipermeable membrane includes: a supporting membrane having a substrate and a porous supporting layer; and a separation functional layer provided on the supporting membrane, in which, when any 10 cross sections of the composite semipermeable membrane, having a length of 2.0 ?m in a membrane surface direction, are observed using an electron microscope, an average number density of projections on the separation functional layer, which have a height equivalent to or higher than ? of a 10-point average surface roughness of the separation functional layer, is 10.0 pieces/?m or more, in each cross section, and an average height of the projections is 100 nm or more.Type: ApplicationFiled: January 16, 2013Publication date: November 20, 2014Inventors: Jun Okabe, Yoshie Marutani, Kiyohiko Takaya, Harutoki Shimura, Takao Sasaki, Masahiro Kimura