Patents Assigned to Asahi Kasei Kabushiki Kaisha
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Publication number: 20250146191Abstract: The present disclosure relates to a glass cloth, prepreg, and printed circuit board. There is provided a glass cloth including woven glass yarns, wherein a bulk dissipation factor of a glass in the glass yarns is 0.0010 or less, a bending rigidity (gf-cm/cm) per warp direction basis weight (g/m2) of the glass cloth is in the range of 0.0002 to 0.0014, and a dissipation factor of the glass cloth at 10 GHz is in the range of greater than 0 and 0.0010 or less.Type: ApplicationFiled: March 7, 2023Publication date: May 8, 2025Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Amane HIROSE, Yuka HASHIMOTO
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Patent number: 12290602Abstract: The present invention provides a cellulose powder containing an alkali-soluble substance capable of dissolving in 17.5% by mass of aqueous sodium hydroxide solution, the content of the alkali-soluble substance being 32% by mass or more and 44% by mass or less with respect to the total mass of the cellulose powder, the use thereof, and tablets using the same.Type: GrantFiled: August 27, 2019Date of Patent: May 6, 2025Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Tadahiro Kumagai, Kaede Tamari, Naoya Yoshida
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Publication number: 20250138008Abstract: When bacteria with different bacteriolysis targets are detected, it was necessary to lyse the individual bacteria separately with lysis solutions containing lysis enzymes suitable for each bacteriolysis target, resulting in a complicated and delayed bacteriolysis process. The purpose of this invention is to provide a new bacteriolysis method for lysing bacteria belonging to two or more species in a sample, making the bacteriolysis process more efficient and rapid. Provided is method for lysing a group of bacteria in the sample, comprising the step of lysing the group of bacteria in the sample in a mixture solution obtained by mixing the sample, a bacteriolysis enzyme, and a bacteriolysis aid, wherein the bacteriolysis enzyme includes at least one bacteriolysis enzyme selected from the group consisting of lysostaphin, lysozyme, acetyl glucosaminidase, and endopeptidase, and wherein the mixture solution has a pH of from 6.0 to 7.0 and an electrical conductivity of from 2.5 to 8.Type: ApplicationFiled: November 24, 2023Publication date: May 1, 2025Applicant: ASAHI KASEI KABUSHIKI KAISHAInventor: Yu ANDO
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Publication number: 20250137175Abstract: The present invention provides a covering material for a seat sheet of a vehicle or furniture, or for an interior material of a vehicle, wherein a surface layer knitted fabric is constituted by a composite yarn comprising two or more differing types of colored yarn, such that the covering material exhibits excellent design properties with a textured appearance.Type: ApplicationFiled: September 30, 2022Publication date: May 1, 2025Applicant: Asahi Kasei Kabushiki KaishaInventor: Hideo Ikenaga
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Patent number: 12285724Abstract: The purpose of the present invention is to provide: a membrane distillation module with excellent stability of water treatment ability over time as a result of wetting being controlled; and a membrane distillation apparatus comprising the same. Provided is a membrane distillation module that comprises a housing and multiple porous hollow fiber membranes, both ends of which are bonded and fixed to the housing, wherein: the water contact angle of the outer surfaces of the porous hollow fiber membranes is at least 90°; and a hydrophobic polymer adheres to at least some of the areas of the porous hollow fiber membranes that are not bonded and fixed.Type: GrantFiled: January 10, 2020Date of Patent: April 29, 2025Assignee: Asahi Kasei Kabushiki KaishaInventors: Tomotaka Hashimoto, Tomoya Anan
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Publication number: 20250132460Abstract: Provided is an ultrahigh-molecular-weight polyethylene powder having intrinsic viscosity IV of 1.0 dL/g or more and 33.0 dL/g or less, wherein average value Ts of swelling onset temperatures determined by specific methods is 90° C. or higher and 130° C. or lower.Type: ApplicationFiled: September 28, 2022Publication date: April 24, 2025Applicant: Asahi Kasei Kabushiki KaishaInventors: Koichi Tsujimoto, Kazuya Shikata
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Publication number: 20250129231Abstract: An object is to provide a method of treating a composite material which enables the efficient recovery of the reinforcing material without causing degradation of the quality and without placing a burden on the environment. In order to achieve the above-mentioned object, the present disclosure is a method of treating a composite material made of a resin and a reinforcing material, the method comprising the steps of decomposing the resin and recovering the reinforcing material by immersing the composite material in a decomposition solution containing oxidatively active species derived from sulfuric acid as a raw material and performing heating, the method further comprising the step of supplying oxygen into the decomposition solution.Type: ApplicationFiled: November 4, 2022Publication date: April 24, 2025Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Yuji OKADA, Kazuya YAMAMOTO, Yasuhisa NAGATA
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Patent number: 12281187Abstract: To provide microwell films for bioassay suitable for a “unimolecular enzyme assay” method and methods of manufacturing the films, a microwell film for bioassay is comprised of at least a substrate (11), and a resin layer (12) having microwells on its surface provided on one main surface of the substrate (11), where in the substrate (11) and the resin forming the resin layer (12), an absorption coefficient at each of wavelengths of 350 nm to 800 nm is 0.01 ?m?1 or less.Type: GrantFiled: July 1, 2020Date of Patent: April 22, 2025Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Fujito Yamaguchi, Ryuichi Ito, Makoto Okada
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Publication number: 20250122376Abstract: The present invention provides: a resin composition which achieves a good balance among the mechanical characteristics, decorativeness and aesthetic appearance at high levels; and a method for producing this resin composition. One embodiment of the present invention provides: a resin composition which contains cellulose nanofibers, a resin and a liquid polymer that has a thermal decomposition initiation temperature of more than 200° C.; and a method for producing this resin composition. With respect to one embodiment of the present invention, the liquid polymer contains a diene rubber. With respect to one embodiment of the present invention, the liquid polymer is composed of one or more substances that are selected from the group consisting of a polybutadiene, a butadiene-styrene copolymer, a polyisoprene and a polychloroprene.Type: ApplicationFiled: June 10, 2022Publication date: April 17, 2025Applicant: Asahi Kasei Kabushiki KaishaInventor: Koichi Ueno
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Publication number: 20250122145Abstract: The present disclosure relates to a production method of a dicarboxylic acid compound and/or diamine compound, and optionally, dehydration condensates of the dicarboxylic acid compound and diamine compound (dehydration condensate of one molecule of the dicarboxylic acid compound and one molecule of the diamine compound and dehydration condensates of one molecule of one of these and two molecules of the other), from a polyamide as the raw material. It includes (i) a first hydrolysis step of hydrolyzing the polyamide in high-temperature water to obtain a first hydrolysate, and (ii) a second hydrolysis step of subjecting the first hydrolysate to enzymatic hydrolysis to obtain a second hydrolysate. The first hydrolysate contains a water-soluble polyamide that dissolves in water at 20° C., and the second hydrolysate contains the dicarboxylic acid compound and/or diamine compound, and optionally contains a dehydration condensate of the dicarboxylic acid compound and diamine compound.Type: ApplicationFiled: February 2, 2023Publication date: April 17, 2025Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Masaaki ARAMAKI, Katsuhiro IWASE, Koji ISAKA, Ryo MIYATAKE, Kenichi YAKIGAYA, Shoji OTANI, Yutaro YAMADA
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Patent number: 12274984Abstract: [PROBLEM] To provide an evaluation method and evaluation device with which the practical performance of a forward osmosis membrane can more accurately be measured. [SOLVING MEANS] Provided is a method for evaluating a forward osmosis membrane module. The method includes the steps of, in a forward osmosis membrane module having spaces which are partitioned by a forward osmosis membrane including a porous support body and a separation function layer stacked thereon, connecting a feed solution line to a space on the separation function layer side, and connecting a draw solution line to a space on the porous support body side, and moving a solvent in the feed solution into the draw solution via the forward osmosis membrane while adjusting a physical pressure differential across the forward osmosis membrane to a constant value within the range of more than 0 kPa to 200 kPa.Type: GrantFiled: June 28, 2022Date of Patent: April 15, 2025Assignee: Asahi Kasei Kabushiki KaishaInventor: Daisuke Hotta
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Patent number: 12275710Abstract: A compound having an uretonimine group contains, as a structural unit, a carbodiimide compound derived from at least one of an aliphatic diisocyanate and an aromatic diisocyanate, and also contains an isocyanate compound as a structural unit, wherein the residue obtained by removing an isocyanate group from the isocyanate compound and the residue obtained by removing a carbodiimide group from the carbodiimide compound are different.Type: GrantFiled: May 15, 2019Date of Patent: April 15, 2025Assignee: Asahi Kasei Kabushiki KaishaInventors: Nobuhisa Miyake, Masakazu Yamauchi, Hiroshi Inada, Yusuke Ebe, Masaaki Shinohata
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Publication number: 20250114743Abstract: Provided are a raw material liquid concentration method and a raw material liquid concentration system that can achieve a high flux even when using a raw material liquid that is rich in an organic solvent. An aspect of the present invention provides a method for concentrating a raw material liquid, said method comprising a concentration step for bringing a raw material liquid and an induction solution in contact via a forward osmosis membrane. The raw material liquid contains not less than 50 mass % of an organic solvent and a valuable substance. The forward osmosis membrane has a base material layer and an active layer. Either the induction solution contains a hydrophobic induction solute and the active layer is hydrophilic, or the induction solution contains a hydrophilic induction solute and the active layer is hydrophobic.Type: ApplicationFiled: January 6, 2023Publication date: April 10, 2025Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Ryoichi Takada, Takahiro Osaki, Yuji Katayama
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Publication number: 20250115710Abstract: Provided is an oxyethylene structure-containing polycarbonate polyol having a hydroxy value of 10 to 400 mg-KOH/g, the oxyethylene structure-containing polycarbonate polyol comprising predetermined structural units in predetermined amounts.Type: ApplicationFiled: November 1, 2022Publication date: April 10, 2025Applicant: ASAHI KASEI KABUSHIKI KAISHAInventor: Yasufumi KAWAI
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Publication number: 20250115754Abstract: The present invention provides a hydrogenated block copolymer satisfying the following: the hydrogenated block copolymer contains a polymer block (a) containing a vinyl aromatic monomer unit, and a content of the polymer block (a) is 10% by mass or more and 40% by mass or less; the hydrogenated block copolymer contains at least one hydrogenated copolymer block (b) containing a vinyl aromatic monomer unit and a conjugated diene monomer unit, and a content of the vinyl aromatic monomer unit in the hydrogenated copolymer block (b) is 30% by mass or more and 79% by mass or less; the hydrogenated block copolymer has a value of instantaneous hardness of 60 or more, and a value of instantaneous hardness of 65 or less; and the hydrogenated block copolymer has an MFR value measured under conditions of a temperature of 230° C. and a load of 2.16 kg of 10 or more.Type: ApplicationFiled: December 27, 2022Publication date: April 10, 2025Applicant: Asahi Kasei Kabushiki KaishaInventors: Yuya Sonoda, Satoshi Kamimura
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Publication number: 20250114840Abstract: An object is to provide a composition for use in sintered molded bodies that enables an organic binder to be degreased in a short time without requiring a special facility or step, does not cause mold deposit during molding, and suppresses cracking and swelling during molding and after sintering. In order to achieve the above-mentioned object, the present disclosure is a composition for use in sintered molded bodies containing a sinterable inorganic powder and an organic binder, wherein the organic binder contains at least a polyacetal resin, a polyolefin resin and an epoxy resin, and a total end amount with respect to all polyoxymethylene units in the polyacetal resin is 0.1 mol % or more and 0.75 mol % or less.Type: ApplicationFiled: February 15, 2023Publication date: April 10, 2025Applicants: ASAHI KASEI KABUSHIKI KAISHA, MOULAGE LLCInventors: Motohiro FUKAI, Kuon MIYAZAKI, Yoshimitsu KANKAWA
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Publication number: 20250112332Abstract: The purpose of the present disclosure is to provide: a separator for lead acid storage batteries, the separator having excellent charge acceptability and excellent cycle characteristics; and a lead acid storage battery which uses this separator for lead acid storage batteries. A separator for lead acid storage batteries according to the present disclosure comprises a base material and a layer that is superposed on at least one surface of the base material; and the layer contains a carbon material, while having a void fraction of 7.0% to 75.0%.Type: ApplicationFiled: January 18, 2023Publication date: April 3, 2025Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Haruna Mizuno, Tomonori Kiyama, Juri Iwama
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Publication number: 20250111997Abstract: The present disclosure relates to a current separation method and the like of a nonaqueous lithium power storage element. In the current separation method, the nonaqueous lithium power storage element includes a cell including: a positive electrode precursor that includes a positive electrode active material layer containing lithium carbonate and activated carbon; a negative electrode that includes a negative electrode active material layer containing a negative electrode active material capable of occluding and releasing lithium; a separator arranged between the positive electrode precursor and the negative electrode; and an electrolyte solution. The current separation method includes the step of calculating a capacitor current IC and an electrode reaction current Id of the cell based on voltage and current of the cell that are measured during doping of the cell.Type: ApplicationFiled: May 30, 2022Publication date: April 3, 2025Applicant: Asahi Kasei Kabushiki KaishaInventors: Koichi Hiraoka, Fumiya Nakamura, Ryusuke Okoshi, Yusuke Morikawa
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Patent number: 12264241Abstract: A hydrogenated copolymer containing a hydrogenated copolymer (a) prepared by hydrogenating a copolymer of a vinyl aromatic compound and a conjugated diene compound, and a hydrogenated copolymer (b) prepared by hydrogenating a copolymer of a vinyl aromatic compound and a conjugated diene compound, wherein a mass ratio (a)/(b) of a content of the hydrogenated copolymer (a) to a content of the hydrogenated copolymer (b) is 5/95 to 95/5, the hydrogenated copolymer (a) has a hydrogenated polymer block (B1) and a hydrogenated polymer block (B2), the hydrogenated polymer block (B1) consists of a vinyl aromatic compound and a conjugated diene compound and has a content of the vinyl aromatic compound of 40 to 80 mass %, and the hydrogenated polymer block (B2) mainly contains a conjugated diene compound and has a vinyl bond content of 60 to 100 mol % before hydrogenation.Type: GrantFiled: May 18, 2020Date of Patent: April 1, 2025Assignee: Asahi Kasei Kabushiki KaishaInventors: Hiroyuki Ichino, Yasuhiro Kusanose, Toshikazu Hoshina, Takahiro Tsuji, Takahiro Hisasue
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Publication number: 20250101617Abstract: An object is to provide a cathode that maintains high energy conversion efficiency over a long period of time without increase in overvoltage even when hydrogen generation is repeatedly started and stopped. In order to achieve the above-mentioned object, the present disclosure is a cathode for generating hydrogen including a conductive substrate and a catalyst layer including, on a surface of the conductive substrate: at least one of Pt, a Pt oxide, and a Pt hydroxide; and at least one of a metal, an oxide, and a hydroxide of a lanthanoid element that becomes electrochemically stable as trivalent ions within the potential window of water of pH 7 or higher and pH 16 or lower. The molar ratio of the Pt element to the lanthanoid element (Pt:lanthanoid) in the catalyst layer is 95:5 to 65:35.Type: ApplicationFiled: January 27, 2023Publication date: March 27, 2025Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Yasuhiro NAKAJIMA, Jun YOSHIDA, Dai NAGATA, Norikazu FUJIMOTO