Patents by Inventor Yuka Asahi
Yuka Asahi 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: 11413582Abstract: A filtration device includes a continuous first unit including a first membrane that separates a liquid into first permeated and non-permeated liquids, a first adjuster that adjusts a flow rate of the first permeated liquid to be substantially constant, and a first liquid scale that detects a liquid amount, a second unit including a second membrane that separates another liquid into second permeated and non-permeated liquids, a second adjuster that adjusts a flow rate of the second permeated liquid to be substantially constant, and a second liquid scale that detects another liquid amount, a first controller that controls the liquid amount in the first storage tank based on measurement values from continuous two first units or from the continuous first and second units, and a second controller that controls the another liquid amount based on a measurement value from the second unit.Type: GrantFiled: November 29, 2018Date of Patent: August 16, 2022Assignee: Toray Industries, Inc.Inventors: Yuka Asahi, Atsushi Minamino, Hiroyuki Kurihara, Katsushige Yamada
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Publication number: 20210069647Abstract: A filtration device includes a continuous first unit including a first membrane that separates a liquid into first permeated and non-permeated liquids, a first adjuster that adjusts a flow rate of the first permeated liquid to be substantially constant, and a first liquid scale that detects a liquid amount, a second unit including a second membrane that separates another liquid into second permeated and non-permeated liquids, a second adjuster that adjusts a flow rate of the second permeated liquid to be substantially constant, and a second liquid scale that detects another liquid amount, a first controller that controls the liquid amount in the first storage tank based on measurement values from continuous two first units or from the continuous first and second units, and a second controller that controls the another liquid amount based on a measurement value from the second unit.Type: ApplicationFiled: November 29, 2018Publication date: March 11, 2021Inventors: Yuka Asahi, Atsushi Minamino, Hiroyuki Kurihara, Katsushige Yamada
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Patent number: 10844444Abstract: A method of producing a sugar liquid derived from a cellulose-containing biomass includes (a) saccharifying a pretreated product having alignin content of not more than 8.5% obtained by pretreatment of a cellulose-containing biomass, to obtain a saccharified liquid; (b) filtering the saccharified liquid obtained in Step (a) through a microfiltration membrane to allow formation of a cake on a membrane surface in a feed side while obtaining a sugar liquid from a permeate side; and (c) collecting the cake formed on the membrane surface in Step (b) by peeling from the membrane.Type: GrantFiled: March 23, 2016Date of Patent: November 24, 2020Assignee: Toray Industries, Inc.Inventors: Yuka Asahi, Atsushi Minamino, Hiroyuki Kurihara, Masashi Higasa, Katsushige Yamada
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Patent number: 10781466Abstract: A method of producing a sugar liquid includes: (A) reacting mannanase with a liquid component obtained by hydrolysis treatment of woody biomass to obtain a saccharified liquid; and (B) filtering the saccharified liquid in Step (A) through a microfiltration membrane and/or ultrafiltration membrane to collect a sugar liquid from a permeate side.Type: GrantFiled: September 4, 2015Date of Patent: September 22, 2020Assignee: Toray Industries, Inc.Inventors: Atsushi Minamino, Yuka Asahi, Hiroyuki Kurihara, Jumpei Kishimoto, Masashi Higasa, Katsushige Yamada
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Patent number: 10767236Abstract: A method of producing a sugar liquid includes a step of filtering a saccharified liquid derived from cellulose-containing biomass, through a nanofiltration membrane and/or reverse osmosis membrane; and a two-step washing step of washing the nanofiltration membrane and/or reverse osmosis membrane after the filtration, with an acid washing liquid and then with an alkali washing liquid; is provided. The method of producing a sugar liquid in which a cellulose-derived sugar liquid is processed through a nanofiltration membrane and/or reverse osmosis membrane is/are effectively washed in a contaminated separation membrane(s).Type: GrantFiled: January 29, 2015Date of Patent: September 8, 2020Assignee: Toray Industries, Inc.Inventors: Yuka Asahi, Atsushi Minamino, Jumpei Kishimoto, Masashi Higasa
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Patent number: 10519093Abstract: A method efficiently produces hydroxycinnamic acids having a high quality, from a cellulose-containing biomass. More specifically, the method includes the steps of: obtaining an alkaline filtrate by allowing an alkaline aqueous medium to pass through a cellulose-containing biomass; obtaining a hydroxycinnamic acid extraction liquid by allowing the alkaline filtrate to repeatedly pass through the cellulose-containing biomass; and separating the hydroxycinnamic acid from the hydroxycinnamic acid extraction liquid.Type: GrantFiled: March 28, 2017Date of Patent: December 31, 2019Assignee: Toray Industries, Inc.Inventors: Atsushi Minamino, Shigeyuki Funada, Hiroyuki Kurihara, Yuka Asahi, Takuya Kasahara, Katsushige Yamada
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Publication number: 20190112254Abstract: A method efficiently produces hydroxycinnamic acids having a high quality, from a cellulose-containing biomass. More specifically, the method includes the steps of: obtaining an alkaline filtrate by allowing an alkaline aqueous medium to pass through a cellulose-containing biomass; obtaining a hydroxycinnamic acid extraction liquid by allowing the alkaline filtrate to repeatedly pass through the cellulose-containing biomass; and separating the hydroxycinnamic acid from the hydroxycinnamic acid extraction liquid.Type: ApplicationFiled: March 28, 2017Publication date: April 18, 2019Inventors: Atsushi Minamino, Shigeyuki Funada, Hiroyuki Kurihara, Yuka Asahi, Takuya Kasahara, Katsushige Yamada
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Publication number: 20190112624Abstract: A method efficiently produces a sugar liquid having a high quality from a cellulose-containing biomass. More specifically, the method includes: the step of obtaining an alkaline filtrate by allowing an alkaline aqueous medium to pass through a cellulose-containing biomass; the recirculation filtration step of allowing the alkaline filtrate to repeatedly pass through the cellulose-containing biomass to produce a cellulose-containing solid component; and the step of hydrolyzing the cellulose-containing solid component to obtain the sugar liquid.Type: ApplicationFiled: March 28, 2017Publication date: April 18, 2019Inventors: Atsushi Minamino, Shigeyuki Funada, Hiroyuki Kurihara, Yuka Asahi, Takuya Kasahara, Katsushige Yamada
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Publication number: 20180051350Abstract: A method of producing a sugar liquid derived from a cellulose-containing biomass includes (a) saccharifying a pretreated product having alignin content of not more than 8.5% obtained by pretreatment of a cellulose-containing biomass, to obtain a saccharified liquid; (b) filtering the saccharified liquid obtained in Step (a) through a microfiltration membrane to allow formation of a cake on a membrane surface in a feed side while obtaining a sugar liquid from a permeate side; and (c) collecting the cake formed on the membrane surface in Step (b) by peeling from the membrane.Type: ApplicationFiled: March 23, 2016Publication date: February 22, 2018Inventors: Yuka Asahi, Atsushi Minamino, Hiroyuki Kurihara, Masashi Higasa, Katsushige Yamada
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Publication number: 20170275663Abstract: A method of producing a sugar liquid includes: (A) reacting mannanase with a liquid component obtained by hydrolysis treatment of woody biomass to obtain a saccharified liquid; and (B) filtering the saccharified liquid in Step (A) through a microfiltration membrane and/or ultrafiltration membrane to collect a sugar liquid from a permeate side.Type: ApplicationFiled: September 4, 2015Publication date: September 28, 2017Inventors: Atsushi Minamino, Yuka Asahi, Hiroyuki Kurihara, Jumpei Kishimoto, Masashi Higasa, Katsushige Yamada
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Publication number: 20170058369Abstract: A method of producing a sugar liquid includes a step of filtering a saccharified liquid derived from cellulose-containing biomass, through a nanofiltration membrane and/or reverse osmosis membrane; and a two-step washing step of washing the nanofiltration membrane and/or reverse osmosis membrane after the filtration, with an acid washing liquid and then with an alkali washing liquid; is provided. The method of producing a sugar liquid in which a cellulose-derived sugar liquid is processed through a nanofiltration membrane and/or reverse osmosis membrane is/are effectively washed in a contaminated separation membrane(s).Type: ApplicationFiled: January 29, 2015Publication date: March 2, 2017Inventors: Yuka Asahi, Atsushi Minamino, Jumpei Kishimoto, Masashi Higasa