Patents by Inventor Tomoya YOSHIZAKI
Tomoya YOSHIZAKI 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: 11905180Abstract: The present invention relates to a method for recovering a rare metal salt, the method including: an acid treatment step of obtaining a rare metal-containing acidic aqueous solution by bringing a material including a monovalent rare metal and a polyvalent rare metal into contact with an acidic aqueous solution; a separation step of obtaining permeated water including the monovalent rare metal and non-permeated water including the polyvalent rare metal from the rare metal-containing acidic aqueous solution by using a nanofiltration membrane satisfying the condition (1); and a concentration step of obtaining non-permeated water having a higher concentration of the monovalent rare metal and permeated water having a lower concentration of the monovalent rare metal than that of the permeated water in the separation step, by using a reverse osmosis membrane.Type: GrantFiled: April 21, 2021Date of Patent: February 20, 2024Assignee: TORAY INDUSTRIES, INC.Inventors: Tomoya Yoshizaki, Takanori Soya, Masakazu Koiwa, Shigehisa Hanada
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Publication number: 20230219040Abstract: A method of separating and recovering a cobalt salt and a nickel salt includes a separation step of separating, by using a nanofiltration membrane, a cobalt salt and a nickel salt from a rare metal-containing aqueous solution containing at least both the cobalt salt and the nickel salt as rare metals, in which the nanofiltration membrane has a glucose permeability of 3 times or more a sucrose permeability, the sucrose permeability of 10% or less, and an isopropyl alcohol permeability of 50% or more when a 1,000 mg/L glucose aqueous solution, a 1,000 mg/L sucrose aqueous solution, and a 1,000 mg/L isopropyl alcohol aqueous solution, each having a pH of 6.5 and a temperature of 25° C., individually permeate through the nanofiltration membrane at an operating pressure of 0.5 MPa.Type: ApplicationFiled: May 28, 2021Publication date: July 13, 2023Inventors: Tomoya Yoshizaki, Takanori Soya, Masakazu Koiwa, Shigehisa Hanada
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Publication number: 20230202854Abstract: The present invention relates to a method for recovering a rare metal salt, the method including: an acid treatment step of obtaining a rare metal-containing acidic aqueous solution by bringing a material including a monovalent rare metal and a polyvalent rare metal into contact with an acidic aqueous solution; a separation step of obtaining permeated water including the monovalent rare metal and non-permeated water including the polyvalent rare metal from the rare metal-containing acidic aqueous solution by using a nanofiltration membrane satisfying the condition (1); and a concentration step of obtaining non-permeated water having a higher concentration of the monovalent rare metal and permeated water having a lower concentration of the monovalent rare metal than that of the permeated water in the separation step, by using a reverse osmosis membrane.Type: ApplicationFiled: April 21, 2021Publication date: June 29, 2023Applicant: TORAY INDUSTRIES, INC.Inventors: Tomoya YOSHIZAKI, Takanori SOYA, Masakazu KOIWA, Shigehisa HANADA
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Publication number: 20220080363Abstract: The present invention relates to a composite semipermeable membrane including: a substrate; a porous support layer disposed on the substrate; and a separation functional layer disposed on the porous support layer, in which the separation functional layer includes: a first layer including a crosslinked aromatic polyamide; and a coating layer existing on the first layer and including an aliphatic polyamide including a fluorine atom, and the composite semipermeable membrane has a proportion of the number of fluorine atoms to the total number of atoms of all elements of 0.5% or more and 8% or less, and has a ratio (N/O ratio) of the number of nitrogen atoms to the number of oxygen atoms of 0.8 or more and 1.3 or less.Type: ApplicationFiled: September 30, 2019Publication date: March 17, 2022Applicant: TORAY INDUSTRIES, INC.Inventors: Tomoya YOSHIZAKI, Tsuyoshi HAMADA, Masami OGATA, Harutoki SHIMURA, Takafumi OGAWA
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Publication number: 20200139307Abstract: Provided are: a semipermeable composite membrane having high fouling resistance against membrane; and a method for producing the semipermeable composite membrane. This semipermeable composite membrane comprises a substrate, a porous support layer disposed on the substrate, and a separation functional layer disposed on the porous support layer, wherein the separation functional layer contains: from the porous support layer side, a first layer containing a crosslinked aromatic polyamide which is a polymer of a polyfunctional aromatic amine and a polyfunctional aromatic acid chloride; and an aliphatic polyamide which is present on the first layer and which is a polymer of a polyfunctional aliphatic carboxylic acid and a polyfunctional aliphatic amine.Type: ApplicationFiled: March 30, 2018Publication date: May 7, 2020Applicant: TORAY INDUSTRIES, INC.Inventors: Tomoya YOSHIZAKI, Tsuyoshi HAMADA, Jun OKABE, Takafumi OGAWA
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Patent number: 9658080Abstract: An in-vehicle electronic control unit (ECU) for correcting an error introduced to a sensor output signal as a result of amplification is provided. An output voltage of first and second voltage generators and after-amplification voltages of such output voltages are respectively A/D converted for input into a linear function. A microcomputer adjusts the output voltage of the first and second voltage generators which are amplified by the amplification circuit so that the output signals of the first and second voltage generators are adjusted to increase a voltage difference between the two. The increased voltage difference allows accurate identification of the linear function and removal of the error that is introduced to the sensor output signal during the course of processing by the amplification circuit.Type: GrantFiled: October 21, 2013Date of Patent: May 23, 2017Assignee: DENSO CORPORATIONInventors: Tomoya Yoshizaki, Keita Oomi, Daisuke Kawakami
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Publication number: 20140114599Abstract: An in-vehicle electronic control unit (ECU) for correcting an error introduced to a sensor output signal as a result of amplification is provided. An output voltage of first and second voltage generators and after-amplification voltages of such output voltages are respectively A/D converted for input into a linear function. A microcomputer adjusts the output voltage of the first and second voltage generators which are amplified by the amplification circuit so that the output signals of the first and second voltage generators are adjusted to increase a voltage difference between the two. The increased voltage difference allows accurate identification of the linear function and removal of the error that is introduced to the sensor output signal during the course of processing by the amplification circuit.Type: ApplicationFiled: October 21, 2013Publication date: April 24, 2014Applicant: DENSO CORPORATIONInventors: Tomoya YOSHIZAKI, Keita OOMI, Daisuke KAWAKAMI