Patents by Inventor Yuki Fukunaga
Yuki Fukunaga 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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Publication number: 20240117088Abstract: To provide a method for producing a fluorinated copolymer, whereby it is possible to efficiently produce a fluorinated copolymer in which coloration and foaming are suppressed during heating. A method for producing a fluorinated copolymer, comprising a step of producing a fluorinated copolymer by polymerizing tetrafluoroethylene and other monomer other than the tetrafluoroethylene in the presence of a hydroperoxide, at least one selected from the group consisting of a sulfite, a hydrogen sulfite, a dithionite, and a metabisulfite, at least one selected from the group consisting of an acidic substance and a substance that generates an acid by hydrolysis, and an aqueous medium.Type: ApplicationFiled: November 27, 2023Publication date: April 11, 2024Applicant: AGC Inc.Inventors: Kosuke SHIBASAKI, Yuki ORITO, Keiji HORI, Shintaro FUKUNAGA, Daisuke TAGUCHI
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Publication number: 20240081718Abstract: A biological information measurement device includes a sensor unit that detects predetermined biological information related to an organ of a living body, an A/D conversion unit that converts a measurement signal output from the sensor unit into a digital signal, a storage unit that stores information including a digital signal related to the measurement signal output from the A/D conversion unit, an analysis processing unit that determines presence or absence of a suspicion of an abnormality in the organ by analyzing the digital signal, and a measurement control unit that changes a sampling frequency related to A/D conversion of the measurement signal under a predetermined condition when the analysis processing unit has determined that a suspicion of an abnormality is present in the organ.Type: ApplicationFiled: November 16, 2023Publication date: March 14, 2024Inventors: Kenji FUJII, Yasuhiro KAWABATA, Naomi MATSUMURA, Akito ITO, Yuki SAKAGUCHI, Daizo OKA, Takuya YOSHIDA, Seiji FUKUNAGA, Tatsuaki OKA
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Patent number: 11837750Abstract: A separator for an electricity storage device comprising a silane-modified polyolefin, wherein silane crosslinking reaction of the silane-modified polyolefin is initiated when it contacts with the electrolyte solution, as well as a method for producing the separator.Type: GrantFiled: October 17, 2022Date of Patent: December 5, 2023Assignee: Asahi Kasei Kabushiki KaishaInventors: Xun Zhang, Ryo Kuroki, Yuki Fukunaga, Hiromi Kobayashi, Mitsuko Saito
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Patent number: 11670822Abstract: There is provided a method for producing a separator for an electricity storage device that includes a step of contacting a porous body formed from a silane-modified polyolefin-containing molded sheet with a base solution or acid solution, and a separator for an electricity storage device comprising a microporous film with a melted film rupture temperature of 180° C. to 220° C. as measured by thermomechanical analysis (TMA).Type: GrantFiled: October 11, 2019Date of Patent: June 6, 2023Assignee: Asahi Kasei Kabushiki KaishaInventors: Xun Zhang, Ryo Kuroki, Yuki Fukunaga, Hiromi Kobayashi
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Publication number: 20230117020Abstract: A separator for an electricity storage device comprising a silane-modified polyolefin, wherein silane crosslinking reaction of the silane-modified polyolefin is initiated when it contacts with the electrolyte solution, as well as a method for producing the separator.Type: ApplicationFiled: October 17, 2022Publication date: April 20, 2023Applicant: Asahi Kasei Kabushiki KaishaInventors: Xun Zhang, Ryo Kuroki, Yuki Fukunaga, Hiromi Kobayashi, Mitsuko Saito
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Publication number: 20230120715Abstract: A separator for an electricity storage device comprising a silane-modified polyolefin, wherein silane crosslinking reaction of the silane-modified polyolefin is initiated when it contacts with the electrolyte solution, as well as a method for producing the separator.Type: ApplicationFiled: October 17, 2022Publication date: April 20, 2023Applicant: Asahi Kasei Kabushiki KaishaInventors: Xun Zhang, Ryo Kuroki, Yuki Fukunaga, Hiromi Kobayashi, Mitsuko Saito
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Publication number: 20230111013Abstract: A separator for an electricity storage device comprising a silane-modified polyolefin, wherein silane crosslinking reaction of the silane-modified polyolefin is initiated when it contacts with the electrolyte solution, as well as a method for producing the separator.Type: ApplicationFiled: October 17, 2022Publication date: April 13, 2023Applicant: Asahi Kasei Kabushiki KaishaInventors: Xun Zhang, Ryo Kuroki, Yuki Fukunaga, Hiromi Kobayashi, Mitsuko Saito
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Patent number: 11588208Abstract: A separator for an electricity storage device comprising a silane-modified polyolefin, wherein silane crosslinking reaction of the silane-modified polyolefin is initiated when it contacts with the electrolyte solution, as well as a method for producing the separator.Type: GrantFiled: October 11, 2019Date of Patent: February 21, 2023Assignee: Asahi Kasei Kabushiki KaishaInventors: Xun Zhang, Ryo Kuroki, Yuki Fukunaga, Hiromi Kobayashi, Mitsuko Saito
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Publication number: 20230006305Abstract: There is provided a method for producing a separator for an electricity storage device that includes a step of contacting a porous body formed from a silane-modified polyolefin-containing molded sheet with a base solution or acid solution, and a separator for an electricity storage device comprising a microporous film with a melted film rupture temperature of 180° C. to 220° C. as measured by thermomechanical analysis (TMA).Type: ApplicationFiled: June 24, 2022Publication date: January 5, 2023Applicant: Asahi Kasei Kabushiki KaishaInventors: Xun Zhang, Ryo Kuroki, Yuki Fukunaga, Hiromi Kobayashi
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Publication number: 20230006306Abstract: There is provided a method for producing a separator for an electricity storage device that includes a step of contacting a porous body formed from a silane-modified polyolefin-containing molded sheet with a base solution or acid solution, and a separator for an electricity storage device comprising a microporous film with a melted film rupture temperature of 180° C. to 220° C. as measured by thermomechanical analysis (TMA).Type: ApplicationFiled: June 24, 2022Publication date: January 5, 2023Applicant: Asahi Kasei Kabushiki KaishaInventors: Xun Zhang, Ryo Kuroki, Yuki Fukunaga, Hiromi Kobayashi
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Publication number: 20220294079Abstract: The purpose of the present invention is to provide: a safer polyolefin microporous membrane; a storage device separator, storage device assembly kit, and storage device using the polyolefin microporous membrane; and a storage device. In one embodiment, the polyolefin microporous membrane comprises at least one of each of layer A and layer B, polyolefin contained in at least one of layer A and layer B has one or more types of functional groups, and a crosslinked structure is formed by (1) the functional groups undergoing condensation reactions with each other, (2) the functional group reacting with a chemical substance inside the storage device, or (3) the functional group reacting with a different type of functional group, after accommodation in the storage device.Type: ApplicationFiled: March 12, 2021Publication date: September 15, 2022Applicant: Asahi Kasei Kabushiki KaishaInventors: Xun Zhang, Yusuke Akita, Hiromi Kobayashi, Yuki Fukunaga
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Patent number: 11362399Abstract: According to the present invention, a microporous membrane contains a polyolefin resin and inorganic particles; the primary particle diameter of the inorganic particles is 100 nm or less; the content of the inorganic particles is 10-60% by mass or 10% by mass or more but less than 40% by mass based on the mass of the microporous membrane; and the retention time at 150° C. is less than 200 seconds or the retention time at 145° C. is more than 1 second but less than 300 seconds in the thermal behavior evaluation of the microporous membrane.Type: GrantFiled: May 25, 2018Date of Patent: June 14, 2022Assignee: Asahi Kasei Kabushiki KaishaInventors: Yuki Fukunaga, Manabu Sekiguchi
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Publication number: 20210057701Abstract: There is provided a method for producing a separator for an electricity storage device that includes a step of contacting a porous body formed from a silane-modified polyolefin-containing molded sheet with a base solution or acid solution, and a separator for an electricity storage device comprising a microporous film with a melted film rupture temperature of 180° C. to 220° C. as measured by thermomechanical analysis (TMA).Type: ApplicationFiled: October 11, 2019Publication date: February 25, 2021Applicant: Asahi Kasei Kabushiki KaishaInventors: Xun Zhang, Ryo Kuroki, Yuki Fukunaga, Hiromi Kobayashi
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Publication number: 20200335755Abstract: A separator for an electricity storage device comprising a silane-modified polyolefin, wherein silane crosslinking reaction of the silane-modified polyolefin is initiated when it contacts with the electrolyte solution, as well as a method for producing the separator.Type: ApplicationFiled: October 11, 2019Publication date: October 22, 2020Applicant: Asahi Kasei Kabushiki KaishaInventors: Xun Zhang, Ryo Kuroki, Yuki Fukunaga, Hiromi Kobayashi, Mitsuko Saito
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Patent number: 10720622Abstract: A microporous membrane according to the present invention is a microporous membrane containing a copolymerized high density polyethylene and a high density polyethylene, wherein a content of an ?-olefin unit having 3 or more carbon atoms in the microporous membrane is 0.01 mol % or more and 0.6 mol % or less, and a viscosity average molecular weight of the microporous membrane is less than 300,000. In addition, a battery separator according to the present invention contains the above microporous membrane. Further, a battery according to the present invention contains the above battery separator.Type: GrantFiled: July 13, 2016Date of Patent: July 21, 2020Assignee: Asahi Kasei Kabushiki KaishaInventors: Manabu Sekiguchi, Yuki Fukunaga, Keita Dohki
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Publication number: 20200176742Abstract: According to the present invention, a microporous membrane contains a polyolefin resin and inorganic particles; the primary particle diameter of the inorganic particles is 100 nm or less; the content of the inorganic particles is 10-60% by mass or 10% by mass or more but less than 40% by mass based on the mass of the microporous membrane; and the retention time at 150° C. is less than 200 seconds or the retention time at 145° C. is more than 1 second but less than 300 seconds in the thermal behavior evaluation of the microporous membrane.Type: ApplicationFiled: May 25, 2018Publication date: June 4, 2020Applicant: Asahi Kasei Kabushiki KaishaInventors: Yuki Fukunaga, Manabu Sekiguchi
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Publication number: 20180205057Abstract: A microporous membrane according to the present invention is a microporous membrane containing a copolymerized high density polyethylene and a high density polyethylene, wherein a content of an ?-olefin unit having 3 or more carbon atoms in the microporous membrane is 0.01 mol % or more and 0.6 mol % or less, and a viscosity average molecular weight of the microporous membrane is less than 300,000. In addition, a battery separator according to the present invention contains the above microporous membrane. Further, a battery according to the present invention contains the above battery separator.Type: ApplicationFiled: July 13, 2016Publication date: July 19, 2018Applicant: Asahi Kasei Kabushiki KaishaInventors: Manabu Sekiguchi, Yuki Fukunaga, Keita Dohki