Patents Assigned to Teijin Limited
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Publication number: 20240141096Abstract: An epoxy resin composition contains a curing agent A, a curing agent B, a curing agent C, an epoxy resin D, an epoxy resin E, and resin particles F, wherein the curing agent A is an aromatic polyamine having a substituent selected from an alkyl group, an aromatic group, and a halogen group at each of two ortho positions of an amino group, the curing agent B is an aromatic polyamine that is liquid at 25° C., and the curing agent C is an aromatic polyamine having only one electron donating substituent or no substituent at an ortho position of an amino group, the epoxy resin D is constituted by an epoxy resin which is composed of a monomer containing 4 or more glycidyl groups, and the epoxy resin E is constituted by an epoxy resin which is composed of a monomer containing 2 or 3 glycidyl groups.Type: ApplicationFiled: February 28, 2022Publication date: May 2, 2024Applicant: TEIJIN LIMITEDInventors: Suguru OZAWA, Akimichi ODA, Kohei OSAKI, Toru KANEKO
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Publication number: 20240117184Abstract: The present invention provides a polycarbonate resin composition having excellent low-temperature impact resistance, durability, and flame retardancy. The present invention is directed to a polycarbonate resin composition comprising, relative to 100 parts by weight of a resin component containing 10 to 90 parts by weight of (A) a polycarbonate-polydiorganosiloxane copolymer (component A) and 90 to 10 parts by weight of (B) a polycarbonate resin (component B), 0.5 to 7 parts by weight of (C) a phosphazene compound (component C) and 0.1 to 0.5 parts by weight of (D) a fluorine-containing anti-dripping agent (component D), wherein the ratio of the viscosity average molecular weight of the component A to that of the component B (Mv (component A)/Mv (component B)) is 1 to 1.Type: ApplicationFiled: December 14, 2021Publication date: April 11, 2024Applicant: TEIJIN LIMITEDInventor: Kouji ODA
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Publication number: 20240117531Abstract: The present invention provides a microwave heating unit formed by comprising: a furnace body in which a fiber inlet and a fiber outlet are formed in a tube wall of a waveguide; and a microwave oscillator which guides microwaves into the waveguide. The microwave heating unit is characterized in that: continuous fibers to be heated are configured to have an inclination of an angle ?° with respect to the tube shaft of the waveguide and to travel therein; the angle ?° is 0.Type: ApplicationFiled: February 1, 2022Publication date: April 11, 2024Applicant: TEIJIN LIMITEDInventors: Yoshinori SUZUKI, Hiroaki ZUSHI, Jun-ichi SUGIYAMA
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Patent number: 11936103Abstract: Provided is a conductive film for antennas, in which a conducting film and a substrate made of a polycarbonate resin material containing a polycarbonate resin are laminated, and the polycarbonate resin contains, as main constituent units, a unit (A) represented by the following formula (1) and/or a unit (B) represented by the following formula (2). The conductive film for antennas has low dielectric characteristics and bendability, can form an antenna with a low transmission loss, and has excellent adhesion to the conducting film. (In the formula (1), R1 and R2 each independently represent an alkyl group having 1 to 6 carbon atoms or a halogen atom, and R3 and R4 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a halogen atom.Type: GrantFiled: October 6, 2020Date of Patent: March 19, 2024Assignee: TEIJIN LIMITEDInventors: Hideyuki Tsunemori, Hiroshi Okamoto, Tomoya Nakanishi
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Patent number: 11931700Abstract: A substrate for a liquid filter contains a polyolefin microporous membrane. A mean flow pore size dPP in a pore size distribution of the polyolefin microporous membrane measured by a half dry method according to gas-liquid phase substitution is from 1 nm to 20 nm. A mean flow pore size dLLP in a pore size distribution of the polyolefin microporous membrane measured by a half dry method according to liquid-liquid phase substitution is from 1 nm to 15 nm. A difference (dPP?dLLP) between the mean flow pore size dPP and the mean flow pore size dLLP is 12 nm or less, and a thickness of the polyolefin microporous membrane is from 4 to 25 ?m.Type: GrantFiled: March 23, 2018Date of Patent: March 19, 2024Assignee: TEIJIN LIMITEDInventors: Ayumi Iwai, Koji Furuya, Takao Ohno
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Patent number: 11929531Abstract: A substrate for a composite membrane includes a microporous polyolefin membrane for carrying a hydrophilic resin compound within the pores of the microporous membrane wherein: the average pore diameter is 1 nm to 50 nm; the porosity is 50% to 78%; the membrane thickness is 1 ?m to 12 ?m; and, when a mixed solution of ethanol and water (volume ratio 1/2) is dripped onto a surface of the microporous polyolefin membrane which has not undergone hydrophilization treatment, the contact angle ?1 between the droplet and the surface is 0 to 90 degrees 1 second after the dripping, and the contact angle ?2 between the droplet and the surface is 0 to 70 degrees 10 minutes after the dripping, and the rate of change of the contact angle ((?1??2)/?1×100) is 10 to 50%.Type: GrantFiled: March 15, 2022Date of Patent: March 12, 2024Assignee: TEIJIN LIMITEDInventors: Takeo Yamaguchi, Yuhei Oshiba, Hidenori Ohashi, Jin Tomatsu, Koji Furuya, Takao Ohno, Mami Nanbu
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Publication number: 20240047809Abstract: Provided is a vehicle structure disposed at a lower portion of a center of a vehicle body, the vehicle structure including: a battery cover, a battery tray, and a structural member A for absorbing impact energy. Each of the battery cover and the battery tray is configured with an integrally molded fiber-reinforced plastic. The structural member A is located outside in a vehicle width direction of at least the battery cover and the battery tray. The structural member A is fastened together with the battery cover and the battery tray.Type: ApplicationFiled: December 2, 2021Publication date: February 8, 2024Applicants: Teijin Limited, Teijin Automotive Technologies, Inc.Inventors: Tsukasa Arai, Yoshiki Kashiwagi, Shota Nagata, Hiroshi Miyauchi, Masatomo Teshima, Hugh Foran, Max Kamiyama
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Patent number: 11883989Abstract: A method for producing a press molded body is provided in which a material X that contains a thermoplastic resin Rx and carbon fibers A having a weight average fiber length LwA and a material Y that contains a thermoplastic resin Ry and carbon fibers B having a weight average fiber length LwB are heated, and the heated material X and material Y are pressed within a mold at the same time, thereby producing a press molded body which has a region X that is formed of the material X and a region Y that is formed of the material Y. This method for producing a press molded body is configured such that: LwB<LwA; LwB is from 0.1 mm to 15 mm (inclusive); and the press molded body has a transition zone XY where the region X and the region Y overlap with each other.Type: GrantFiled: December 6, 2018Date of Patent: January 30, 2024Assignee: Teijin LimitedInventors: Shuhei Suzuki, Masahiro Kitagawa, Takeru Ohki
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Publication number: 20240010834Abstract: A thermoplastic resin composition comprising a thermoplastic resin (A) containing a unit represented by formula (1) and a thermoplastic resin (B) containing a unit represented by formula (2), wherein in the formula (1), L1 and L2 each independently represent a divalent linking group, k and 1 each independently represent an integer of 0 or more, R1, R2, R3, and R4 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and W represents a divalent linking group; and in the formula (2), L3 and L4 each independently represent a divalent linking group, m and n each independently represent an integer of 0 or more, and R5, R6, R7, and R8 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms.Type: ApplicationFiled: October 13, 2021Publication date: January 11, 2024Applicant: TEIJIN LIMITEDInventors: Atsushi UMEKI, Ryouta MANO, Takatsune YANAGIDA, Yasuhiko TOMONARI, Keisuke SATO
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Patent number: 11866564Abstract: The present invention is a polymer substrate with a hard coat layer, which is obtained by directly laminating a polymer substrate, a base cured layer and a silicon oxide layer, wherein the base cured layer has a thickness of 1-20 ?m and contains 10-90 parts by weight of a polyfunctional acrylate and 90-10 parts by weight of inorganic oxide fine particles and/or a hydrolytic condensation product of a silicon compound or contains a hydrolytic condensation product of an organic silicon compound as a primary component, and the silicon oxide layer satisfies requirement (a1) below at a position 0.04 ?m in the thickness direction from the interface between the base cured layer and the silicon oxide layer and satisfies requirement (a3) below at the surface of the silicon oxide layer on the opposite side from the interface, Requirement (a1): when the chemical composition is represented by SiOxCyHz, x falls within the range 1.93-1.98, y falls within the range 0.04-0.15 and z falls within the range 0.10-0.50.Type: GrantFiled: March 28, 2018Date of Patent: January 9, 2024Assignees: TEIJIN LIMITED, TSUKISHIMA KIKAI CO., LTD.Inventors: Tatsuya Ekinaka, Tatsuichirou Kon, Hiroshi Kishimoto, Yume Takeda, Takehiro Suga, Satoshi Ogata, Masato Nakagomi
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Patent number: 11846047Abstract: Provided are a cloth and a protective product, which allow for any color appearance and have excellent protection performance against electric arcs. The cloth has a woven fabric structure, wherein a front-surface spun yarn containing an infrared absorber- and/or electrically conductive agent-containing fiber and not containing carbon is located on a front surface, while a back-surface spun yarn containing a carbon-containing fiber is located on a back surface, and the cloth has an ATPV value of 8.0 cal/cm2 or more in Arc Resistance Test ASTM F1959-1999.Type: GrantFiled: December 10, 2019Date of Patent: December 19, 2023Assignee: TEIJIN LIMITEDInventors: Kengo Tanaka, Kenji Iwashita, Hiroki Shimada, Atsushi Kitamura
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Publication number: 20230391177Abstract: A vehicle structure includes a battery tray disposed at a lower portion of a center of a vehicle body, and a cross member extending in a vehicle width direction and inserted into the battery tray. The battery tray includes a first bottom portion, a peripheral wall erected on an outer periphery of the first bottom portion, a first inner wall connected to the first bottom portion, a second inner wall connected to the first bottom portion, and a second bottom portion connected to both the first inner wall and the second inner wall and raised from the first bottom portion, which are configured with an integrally molded fiber-reinforced plastic. A recessed portion extending in the vehicle width direction is formed by the first inner wall, the second inner wall, and the second bottom portion. The cross member is inserted into at least one location of the recessed portion.Type: ApplicationFiled: December 2, 2021Publication date: December 7, 2023Applicants: Teijin Limited, Teijin Automotive Technologies, Inc.Inventors: Yoshiki Kashiwagi, Tsukasa Arai, Shota Nagata, Hiroshi Miyauchi, Masatomo Teshima, Hugh Foran, Max Kamiyama
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Patent number: 11832660Abstract: A garment, to which a blower device is detachably attachable, includes a main body and a heat insulation material. The main body includes at least an outer fabric having an attachment hole through which the blower device can be partially inserted. The main body is configured to cover at least a portion of a body of a wearer. The heat insulation material is attached to the main body at least on an inner side of the outer fabric. The heat insulation material is configured to cover at least a portion of the body. The garment is configured such that the heat insulation material is detachable from the main body.Type: GrantFiled: March 8, 2019Date of Patent: December 5, 2023Assignees: MAKITA CORPORATION, TEIJIN LIMITEDInventors: Manabu Tokunaga, Kazuhiro Sakurai, Natsumi Hara, Nobuyoshi Miyasaka
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Patent number: 11835487Abstract: The present invention provides a method for inspecting a material to be inspected using ultrasound waves, the method including the following step 201 to step 301, in which step 201 is performed in a condition where: the surface temperature of a material under inspection—atmospheric temperature>2° C., and inspection using ultrasound waves in step 301 satisfies: a refractive attenuation rate?1.5%. Step 201: blowing a fluid from a blowing port onto the material to be inspected. Step 301: inspecting the material to be inspected using the ultrasound waves after step 201 or at the same time as the step 201.Type: GrantFiled: March 6, 2019Date of Patent: December 5, 2023Assignee: Teijin LimitedInventors: Takashi Toyozumi, Hodaka Yokomizo, Makoto Ootsubo, Shuhei Suzuki, Akihiko Obata
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Patent number: 11820858Abstract: According to the present invention, there is provided a prepreg characterized by including a reinforcing fiber substrate composed of a reinforcing fiber, and an epoxy resin composition with which the reinforcing fiber substrate is partially or wholly impregnated, in which the epoxy resin composition includes, as an essential component, an epoxy resin, an amine-based curing agent, and a polyamide particle, the epoxy resin composition includes, as an optional component, an epoxy resin-soluble thermoplastic resin; and an epoxy group is introduced to the surface of the polyamide particle, and/or at least one of the epoxy resin, the amine-based curing agent, and the epoxy resin-soluble thermoplastic resin, included in the epoxy resin composition, partially permeates into the polyamide particle.Type: GrantFiled: November 28, 2018Date of Patent: November 21, 2023Assignee: TEIJIN LIMITEDInventors: Akimichi Oda, Hiroaki Kuwahara, Hironori Kawamoto
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Publication number: 20230365748Abstract: The present invention provides: catalyst particles for use in producing a polyester which has a satisfactory color tone and, after having been molded, has satisfactory transparency (low haze); and a method for producing a polyester using the catalyst particles. The catalyst particles for polyester production according to the present invention comprise a product of reaction between the following titanium compound ingredient (A) and the following phosphorus compound ingredient (B) and have a particle diameter D50 of 10.0 or smaller and a particle diameter D90 of 20.0 ?m or smaller. Ingredient (A): A titanium compound ingredient comprising at least one compound selected from among titanium compounds (1) represented by formula (I) and titanium compounds (2) each obtained by reacting any of the titanium compounds of general formula (I) with either an aromatic polycarboxylic acid represented by general formula (II) or an anhydride thereof.Type: ApplicationFiled: September 27, 2021Publication date: November 16, 2023Applicant: TEIJIN LIMITEDInventors: Shuto ISHII, Fuminori TAKENAGA
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Publication number: 20230347636Abstract: A composite of polymer member and inorganic substrate, a method of manufacturing the same, and a polymer member therefor are provided. A method for manufacturing a composite 210, 220 of polymer member and inorganic substrate includes: providing a composite 110, 120 of thermally modified polymer layer and inorganic substrate in which one or more thermally modified polymer layers 20, 21, 22 are adhered onto an inorganic substrate 10, and bonding a polymer member 30, 31, 32 to the inorganic substrate via the one or more thermally modified polymer layers 20, 21, 22.Type: ApplicationFiled: July 11, 2023Publication date: November 2, 2023Applicant: TEIJIN LIMITEDInventors: Junshi SOEDA, Yoshinori IKEDA
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Publication number: 20230349083Abstract: An object of the present invention is to provide a stitched fiber-reinforced substrate material capable of suppressing the formation of microcracks in a fiber reinforced composite material. The stitched fiber-reinforced substrate material of the present invention is a stitched fiber-reinforced substrate material formed by stitching reinforcement fiber sheets made of reinforcement fibers using stitching yarns, to which an organic compound having a polar group is adhered. The organic compound having a polar group is preferably a compound having a polyoxyalkylene structure, and also preferably a compound having an epoxy group. The organic compound having a polar group is preferably adhered in an amount of 0.1 to 10 wt % with respect to the mass of the stitching yarn.Type: ApplicationFiled: February 22, 2021Publication date: November 2, 2023Applicant: TEIJIN LIMITEDInventors: Tetsuya AKAMATSU, Kohei OSAKI, Toru KANEKO
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Patent number: 11800902Abstract: A cooling fabric including a moisture-permeable inner surface layer, a spacer fabric and an outer surface layer, wherein the outer surface layer has an air permeability of at most 250 l/dm2/min at 500 Pa measured according to ISO 9237 and wherein the spacer fabric comprises monofilaments extending across the spacer fabric, wherein the monofilaments have a linear density of at least 250 dtex and wherein the monofilaments are present at a density of at most 800 monofilaments per square-inch.Type: GrantFiled: October 13, 2017Date of Patent: October 31, 2023Assignee: TEIJIN LIMITEDInventors: Hans Gorissen, Peter Gerard Akker, Alex Van Norel, Marijke Timmermans, Mukund Tiwari, Marc-Jan De Haas
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Patent number: 11795279Abstract: A composite material which includes a thermoplastic matrix resin and carbon fibers A including carbon fiber bundles A1 in which Li/(Ni×Di2) satisfies 6.7×101 to 3.3×103, wherein the carbon fibers A have a fiber length of 5-100 mm and have a value of LwA1/(NA1ave×DA12) of 1.0×102 to 3.3×103, the carbon fiber bundles A1 having an average bundle width WA1 less than 3.5 mm and being contained in an amount of 90 vol % or larger with respect to the carbon fibers A A production method for producing a molded object from the composite material is also provided.Type: GrantFiled: November 21, 2018Date of Patent: October 24, 2023Assignee: Teijin LimitedInventors: Makoto Ootsubo, Takeru Ohki, Guofei Hua, Akihisa Nomura, Shuhei Suzuki, Shuhei Onoue, Takumi Kato, Takashi Toyozumi