Patents by Inventor Yasuhiko MUROYA
Yasuhiko MUROYA 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: 11801480Abstract: A hollow-fiber membrane according to an aspect of the present disclosure contains a polytetrafluoroethylene or a modified polytetrafluoroethylene as a main component and has an average outer diameter of 1 mm or less and an average inner diameter of 0.5 mm or less. In a measurement of a heat of fusion of the polytetrafluoroethylene or the modified polytetrafluoroethylene with a differential scanning calorimeter, when the polytetrafluoroethylene or modified polytetrafluoroethylene is subjected to a first step of heating from room temperature to 365° C., a second step of cooling from 365° C. to 350° C., maintaining the temperature, subsequently cooling from 350° C. to 330° C., and further cooling from 330° C. to 305° C., and a third step of cooling from 305° C. to 245° C. at a rate of ?50° C./min and subsequently heating from 245° C. to 365° C. at a rate of 10° C./min, a heat of fusion from 296° C. to 343° C. in the third step is 30.0 J/g or more and 45.0 J/g or less.Type: GrantFiled: September 6, 2019Date of Patent: October 31, 2023Assignee: SUMITOMO ELECTRIC FINE POLYMER, INC.Inventors: Fumihiro Hayashi, Yasuhiko Muroya, Takamasa Hashimoto, Atsushi Uno, Yoshimasa Suzuki
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Publication number: 20230025394Abstract: A method for manufacturing a hollow fiber membrane module, the hollow fiber membrane module including: a hollow fiber membrane bundle including a plurality of hollow fiber membranes; a housing configured to contain the hollow fiber membrane bundle; and a potting part in which a potting agent is added between an outer surface of the hollow fiber membranes and an inner surface of the housing at both end regions or at one end region of the hollow fiber membrane bundle, wherein the method including: providing a sheet-shaped spacer in a space between the hollow fiber membranes at the both end regions or at the one end region of the hollow fiber membrane bundle; and adding a potting agent between the outer surface of the hollow fiber membranes and the inner surface of the housing at the both end regions or at the one end region of the hollow fiber membrane bundle such that the provided spacer is embedded, wherein the potting agent includes resin, rubber, or elastomer, as a main ingredient, and wherein the spacer isType: ApplicationFiled: August 17, 2020Publication date: January 26, 2023Inventors: Fumihiro HAYASHI, Yasuhiko MUROYA, Takamasa HASHIMOTO, Yoshimasa SUZUKI
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Publication number: 20210394122Abstract: A hollow-fiber membrane module according to an embodiment of the present disclosure includes a rectangular tubular outer casing with at least one sidewall being open, the outer casing having a plurality of open ports, and an inner casing configured such that a plurality of hollow-fiber membranes aligned in a longitudinal direction of the outer casing are placeable in the inner casing and configured to be insertable into the one sidewall.Type: ApplicationFiled: September 20, 2019Publication date: December 23, 2021Applicant: SUMITOMO ELECTRIC FINE POLYMER, INC.Inventors: Fumihiro HAYASHI, Yasuhiko MUROYA, Takamasa HASHIMOTO, Atsushi UNO, Yoshimasa SUZUKI
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Publication number: 20210379537Abstract: A hollow-fiber membrane according to an aspect of the present disclosure contains a polytetrafluoroethylene or a modified polytetrafluoroethylene as a main component and has an average outer diameter of 1 mm or less and an average inner diameter of 0.5 mm or less. In a measurement of a heat of fusion of the polytetrafluoroethylene or the modified polytetrafluoroethylene with a differential scanning calorimeter, when the polytetrafluoroethylene or modified polytetrafluoroethylene is subjected to a first step of heating from room temperature to 365° C., a second step of cooling from 365° C. to 350° C., maintaining the temperature, subsequently cooling from 350° C. to 330° C., and further cooling from 330° C. to 305° C., and a third step of cooling from 305° C. to 245° C. at a rate of ?50° C./min and subsequently heating from 245° C. to 365° C. at a rate of 10° C./min, a heat of fusion from 296° C. to 343° C. in the third step is 30.0 J/g or more and 45.0 J/g or less.Type: ApplicationFiled: September 6, 2019Publication date: December 9, 2021Applicant: SUMITOMO ELECTRIC FINE POLYMER, INC.Inventors: Fumihiro HAYASHI, Yasuhiko MUROYA, Takamasa HASHIMOTO, Atsushi UNO, Yoshimasa SUZUKI
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Patent number: 10814286Abstract: A semipermeable membrane according to an embodiment of the present invention includes a semipermeable membrane layer containing an amorphous resin as a main component, and a sheet-like supporting body that supports the semipermeable membrane layer. The supporting body has a porous first supporting layer and a porous second supporting layer laminated on one of surfaces of the first supporting layer. The second supporting layer has a smaller mean flow pore diameter than the first supporting layer. The second supporting layer is impregnated with the semipermeable membrane layer. A ratio of the mean flow pore diameter of the second supporting layer to the mean flow pore diameter of the first supporting layer is preferably 1/1,000 or more and ? or less. The mean flow pore diameter of the first supporting layer is preferably 0.05 ?m or more and 20 ?m or less, and the mean flow pore diameter of the second supporting layer is preferably 0.01 ?m or more and 1 ?m or less.Type: GrantFiled: October 12, 2016Date of Patent: October 27, 2020Assignee: SUMITOMO ELECTRIC FINE POLYMER, INC.Inventors: Fumihiro Hayashi, Yasuhiko Muroya
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Patent number: 10717053Abstract: A method for producing a laminated complex according to one embodiment of the present invention is a method for producing a laminated complex that includes a sheet-shaped or tube-shaped porous support and a semipermeable membrane layer stacked on an outer surface of the support, the method including a coating step of coating an outer surface of the support with a semipermeable membrane layer-forming composition in which a fluororesin is dispersed in a solvent; an immersing step of immersing the coated surface of the support in water after the coating step; and a heating step of heating water in which the support is immersed.Type: GrantFiled: March 7, 2017Date of Patent: July 21, 2020Assignee: SUMITOMO ELECTRIC FINE POLYMER, INC.Inventors: Fumihiro Hayashi, Yasuhiko Muroya
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Publication number: 20190322830Abstract: A porous material according to an embodiment of the present invention is a porous material having a large number of fibrous skeletons containing polytetrafluoroethylene as a main component, in which another fluororesin is evenly present on outer peripheral surfaces of fibers of the large number of fibrous skeletons, and the other fluororesin is a tetrafluoroethylene/perfluorodioxole copolymer, a tetrafluoroethylene/perfluoromethyl vinyl ether copolymer, a tetrafluoroethylene/perfluoroethyl vinyl ether copolymer, a tetrafluoroethylene/perfluoropropyl vinyl ether copolymer, or a combination of these.Type: ApplicationFiled: July 24, 2017Publication date: October 24, 2019Applicant: SUMITOMO ELECTRIC FINE POLYMER, INC.Inventors: Fumihiro HAYASHI, Atsushi UNO, Yoshimasa SUZUKI, Yasuhiko MUROYA, Takayuki USUI
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Publication number: 20190151805Abstract: A semipermeable membrane according to an embodiment of the present invention includes a semipermeable membrane layer containing an amorphous resin as a main component, and a sheet-like supporting body that supports the semipermeable membrane layer. The supporting body has a porous first supporting layer and a porous second supporting layer laminated on one of surfaces of the first supporting layer. The second supporting layer has a smaller mean flow pore diameter than the first supporting layer. The second supporting layer is impregnated with the semipermeable membrane layer. A ratio of the mean flow pore diameter of the second supporting layer to the mean flow pore diameter of the first supporting layer is preferably 1/1,000 or more and 1/5 or less. The mean flow pore diameter of the first supporting layer is preferably 0.05 ?m or more and 20 ?m or less, and the mean flow pore diameter of the second supporting layer is preferably 0.01 ?m or more and 1 ?m or less.Type: ApplicationFiled: October 12, 2016Publication date: May 23, 2019Applicant: SUMITOMO ELECTRIC FINE POLYMER, INC.Inventors: Fumihiro HAYASHI, Yasuhiko MUROYA
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Publication number: 20190083941Abstract: A method for producing a laminated complex according to one embodiment of the present invention is a method for producing a laminated complex that includes a sheet-shaped or tube-shaped porous support and a semipermeable membrane layer stacked on an outer surface of the support, the method including a coating step of coating an outer surface of the support with a semipermeable membrane layer-forming composition in which a fluororesin is dispersed in a solvent; an immersing step of immersing the coated surface of the support in water after the coating step; and a heating step of heating water in which the support is immersed.Type: ApplicationFiled: March 7, 2017Publication date: March 21, 2019Applicant: SUMITOMO ELECTRIC FINE POLYMER, INC.Inventors: Fumihiro HAYASHI, Yasuhiko MUROYA