Patents Assigned to PROTERIAL, LTD.
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Publication number: 20260337739Abstract: The present invention provides an Fe—Cr—Al-based alloy powder, an Fe—Cr—Al-based alloy member including an additively manufactured article using this alloy powder, and a method for producing the Fe—Cr—Al-based alloy member. Provided is an Fe—Cr—Al-based alloy member, which is an additively manufactured article that includes, by mass %, 20% to 30% Cr, 2.0% to 7.0% Al, more than 0.15% but 0.75% or less Ti, and 0.001% to 0.02% C, where 15?(Ti/C)?300 is satisfied, with a remainder being Fe and unavoidable impurities. Carbides precipitating at grain boundaries of crystal grains are Ti carbides with an average diameter of 100 nm or less in equivalent circle diameter.Type: ApplicationFiled: August 30, 2023Publication date: October 29, 2026Applicant: Proterial, Ltd.Inventors: Jing NIU, Kinya AOTA, Kousuke KUWABARA
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Patent number: 12776443Abstract: A method for producing a nanocrystalline alloy ribbon having a resin film, the method including a step of preparing an amorphous alloy ribbon capable of nanocrystallization, a step of performing a thermal treatment for nanocrystallization of the amorphous alloy ribbon with tension exerted on the amorphous alloy ribbon, to obtain a nanocrystalline alloy ribbon, and a step of causing the nanocrystalline alloy ribbon to be held on the resin film with an adhesive layer therebetween.Type: GrantFiled: May 21, 2020Date of Patent: October 27, 2026Assignee: Proterial, Ltd.Inventor: Yasuo Kuriyama
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Patent number: 12767556Abstract: A method for manufacturing a positive electrode active material for a lithium ion secondary battery involves reacting at least 95 mass % of a lithium compound through a heat treatment step using a rotary firing furnace and having a batch firing process for heating a precursor while rolling the same in a heating region in a furnace tube, wherein the batch firing process has: a tilted input stage for tilting the furnace tube and inputting the precursor from an inlet of the firing furnace; a horizontal firing stage for performing firing while making the furnace tube horizontal; and a tilted discharge stage for tilting the furnace tube and discharging a fired powder from an outlet of the firing furnace.Type: GrantFiled: February 22, 2022Date of Patent: October 20, 2026Assignee: Proterial, Ltd.Inventors: Shuichi Takano, Hisato Tokoro, Akira Gunji, Shin Takahashi
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Patent number: 12763231Abstract: An insulated electric wire is provided with a metal conductor, and an insulation coating layer covering an outer periphery of the metal conductor. The insulation coating layer includes a lubricant layer including fluorine-based fine particles as a lubricant as an outermost layer, and an enamel insulation layer including fluorine-based fine particles as an inner layer with respect to the lubricant layer.Type: GrantFiled: March 19, 2024Date of Patent: October 13, 2026Assignee: Proterial, Ltd.Inventors: Hideyuki Suzuki, Naoto Teraki, Masamichi Kishi, Seiichi Kashimura, Kazufumi Suenaga, Kanako Suganuma
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Publication number: 20260308709Abstract: The present invention provides: a martensitic stainless steel strip which has more excellent fatigue characteristics and mechanical strength than conventional martensitic stainless steel strips. A martensitic stainless steel strip, said martensitic stainless steel strip containing, in mass %, from 0.3% to 1.2% of C and from 10.0% to 18.0% of Cr, having a martensite structure, and having a thickness of 1 mm or less. An amount of the residual austenite in the martensitic stainless steel strip is 10 to 25 volume %. A tensile strength is 1,600 MPa or more and 2,300 MPa or less. A proof stress ratio which is a ratio of 0.2% proof stress to the tensile strength is 75% or less. A ratio of compressive residual stress in a rolling direction to compressive residual stress in a rolling width direction of the martensitic stainless steel strip is 75% or more.Type: ApplicationFiled: June 17, 2026Publication date: October 8, 2026Applicant: Proterial, Ltd.Inventor: Hiroyoshi Fujihara
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Publication number: 20260307717Abstract: A position detection device is provided for detecting an axial position of a shaft movable relative to a fixed member within a predetermined range. The device includes a detection coil fixed to the fixed member, a detection body fixed to the shaft, and an excitation coil configured to generate magnetic flux linking the detection coil and the detection body. The detection coil includes first and second portions extending parallel to each other in the axial direction and a connecting portion therebetween, the first and second portions being arranged at least partially in a direction perpendicular to their extending direction. The detection body includes a first detection body portion facing the first portion in a first region of the moving range and a second detection body portion facing the second portion in a second region of the moving range. A combined facing length of the first and second detection body portions relative to the first and second portions is maintained constant over the moving range.Type: ApplicationFiled: April 1, 2026Publication date: October 8, 2026Applicant: Proterial, Ltd.Inventors: Yohei SHIRAKAWA, Yoshiaki YANAGISAWA, Yukio IKEDA
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Patent number: 12754087Abstract: A magnetostrictive torque sensor is configured to be attached around a rotating shaft exhibiting a magnetostrictive effect and detects torque transmitted by the rotating shaft. The magnetostrictive torque sensor includes a holder being composed of a resin and including a cylinder portion with a hollow cavity in a center through which the rotating shaft is inserted, a flexible substrate that includes a detection portion on which a coil group composed of a combination of a plurality of detection coils aligned in a predetermined direction is formed by a wiring pattern, and a signal line portion on which a plurality of signal lines electrically connecting the coil group to an external device are formed by a wiring pattern, and a cylindrical magnetic ring being composed of a soft magnetic material and being arranged around an outer circumference of the cylinder portion of the holder.Type: GrantFiled: March 18, 2024Date of Patent: October 6, 2026Assignees: Proterial, Ltd., NSK Ltd.Inventors: Akitoshi Fujimori, Takashi Onimoto, Seigou Urakami, Takumi Shinojima, Kota Fukuda
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Patent number: 12749602Abstract: The purpose of the present invention is to provide: an iron-chromium-cobalt alloy magnet having improved magnetic characteristics, especially maximum energy product; and a method for producing the same. Provided is an iron-chromium-cobalt alloy magnet, wherein: the iron-chromium-cobalt alloy magnet includes titanium; the number density of Ti-enriched phases having a maximum diameter of 3 ?m or greater in a cross-section is, on average, less than 1.0 per 10,000 ?m2; and the squareness ratio represented by (BH)ma×/(Br×HcB) exceeds 0.72.Type: GrantFiled: February 10, 2022Date of Patent: September 29, 2026Assignee: Proterial, Ltd.Inventors: Shinya Okamoto, Atsuhiko Onuma, Nobuyuki Okamura, Kousuke Kuwabara, Shunya Adachi, Masahiro Sato, Takahiro Ishii
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Patent number: 12749890Abstract: A surge suppression device is provided with a resistor, and a capacitor electrically connected to the resistor. The resistor includes a substrate and a resistive-conducting layer composed of a sintered resistive paste provided on the substrate.Type: GrantFiled: January 19, 2024Date of Patent: September 29, 2026Assignee: Proterial, Ltd.Inventor: Haruyasu Komano
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Publication number: 20260290663Abstract: A sintered R-T-B based magnet containing: R: 26.5 mass % or more and 31.5 mass % or less (R is a rare earth element and contains at least one or two selected from the group consisting of Nd and Pr); M: 0.40 mass % or more and 1.50 mass % or less (M is at least one selected from the group consisting of Ga, Cu, Zn, Al, and Si, and necessarily contains Cu); B: 0.85 mass % or more and 0.94 mass % or less; T: 61.5 mass % or more (T is Fe and Co, and 90% or more of T is Fe in mass ratio); O: 0.05 mass % or more and 0.30 mass % or less; Tb: 0.20 mass % or less; and Dy: 0.30 mass % or less, the sintered R-T-B based magnet satisfying the formula: 26.0 mass %?([Nd]+[Pr]+[Ce]+[La]+[Dy]+[Tb])?12([O]+[C])?27.7 mass %.Type: ApplicationFiled: April 24, 2024Publication date: September 24, 2026Applicant: PROTERIAL, LTD.Inventor: Futoshi KUNIYOSHI
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Publication number: 20260273820Abstract: A cable with molded body includes a conductor wire, a sheath covering the conductor wire, and a molded body made of a resin material and covering an outer circumferential surface of the sheath at a portion in the longitudinal direction, wherein a groove extending in a direction intersecting the longitudinal direction is formed on the outer circumferential surface of the sheath, and the resin material enters and fills the groove.Type: ApplicationFiled: February 12, 2026Publication date: September 17, 2026Applicant: Proterial, Ltd.Inventors: Hiroshi YAMADA, Tomoaki SUZUKI, Junichi KIKUCHI, Koji FUKUDA
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Publication number: 20260273613Abstract: Provided is a method for producing hot work tool steel that has a fine annealed structure even if a cross-sectional size is large. This method for producing hot work tool steel having a cross-sectional area of at least 200,000 mm2 includes: a cogging step for heating a steel ingot to 1100 to 1250° C. and then performing hot forging to obtain a semi-finished product; a first finishing forging step for heating the semi-finished product to 850 to 1020° C., and performing upset forging with an upset forging forming ratio of 1.6 or more to obtain an intermediate forged material; and a second finishing forging step for subjecting the intermediate forged material to solid forging with a solid forging forming ratio of 2.0 to 4.0 to obtain a forged material.Type: ApplicationFiled: September 7, 2023Publication date: September 17, 2026Applicant: Proterial, Ltd.Inventors: Yousuke Nakano, Yuya Koga, Kouta Kataoka
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Publication number: 20260275477Abstract: Provided is hot work tool steel powder for additive manufacturing with which an additively manufactured hot work tool steel object having excellent crack resistance during manufacturing can be manufactured. The hot work tool steel powder for additive manufacturing and the additively manufactured hot work tool steel object comprise: 0.10% to 0.25% both inclusive of C, 0.01% to 0.5% both inclusive of Si, 1.5% or less of Mn, 3.0% to 6.0% both inclusive of Cr, 2.0% to 3.5% both inclusive of one or two of Mo and W according to a relational expression (Mo+½W), 0.3% to 0.7% both inclusive of V, 0% to 0.5% both inclusive of Ni, 0% to 0.25% both inclusive of Cu by mass, and the balance being Fe and unavoidable impurities; and satisfy an equation (1): C+Si/30+(Mn+Cr+Cu)/20+Ni/60+(Mo+½W)/15+V/10?0.75.Type: ApplicationFiled: September 21, 2023Publication date: September 17, 2026Applicant: Proterial, Ltd.Inventors: Daiki Saito, Norihide Fukuzawa, Kouta Kataoka
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Patent number: 12738670Abstract: An antenna radiating element includes an antenna portion and a reflector. The antenna portion includes two bow-tie antennas arranged in a cross shape. The reflector includes a tubular portion having a cross-sectional shape, which is a regular octagon, in a cross-section orthogonal to an axial direction, a bottom portion closing one end part in the axial direction of the tubular portion, and an opening portion provided at an end part opposite to the one end part of the tubular portion. The antenna portion is positioned in the vicinity of the opening portion.Type: GrantFiled: June 12, 2024Date of Patent: September 15, 2026Assignee: Proterial, Ltd.Inventor: Hajime Nagata
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Publication number: 20260264132Abstract: A wire straightening device, including a straightening unit that performs straightening on a wire running in a longitudinal direction, an upstream measuring unit that measures a state of the wire at an upstream position from the straightening unit, and a controller that controls an operation of the straightening unit based on a measurement result of the upstream measuring unit, wherein the straightening unit includes a plurality of straightening rollers that contact the wire and perform straightening on the wire, an actuator that presses the straightening rollers toward the wire, and a load adjustment unit that adjusts a roller load applied from the actuator to the straightening rollers, and wherein the controller determines an open resistance pattern, which is a pattern of change in a roller load when the plurality of straightening rollers is pushed back by the wire, based on the measurement result of the upstream measuring unit.Type: ApplicationFiled: February 18, 2026Publication date: September 10, 2026Applicant: Proterial, Ltd.Inventors: Hideyuki SUZUKI, Akira SETOGAWA, Masanori SUZUKI, Kazuya JINUSHI, Aika SHIMIZU
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Patent number: 12732053Abstract: A three-phase coil structure (30) having a two-phase coil set (32) including a plurality of rectangular air-core coils arranged side by side so as to be adjacent to each other in the same plane includes a one-phase coil set (31) including two air-core coils having different sizes and bending angles bent at both ends and disposed to straddle adjacent long sides of the two-phase coil set (32), wherein a number of turns of each of the air-core coils of the one-phase coil set (31) is larger than a number of turns of each of the air-core coils of the two-phase coil set (32).Type: GrantFiled: January 13, 2023Date of Patent: September 8, 2026Assignees: Proterial, Ltd., Yamaha Robotics Co., Ltd.Inventors: Osamu Kakutani, Seiki Takedomi, Tatsuya Nakano, Minoru Yoshida
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Publication number: 20260257937Abstract: Provided are a method for manufacturing a positive-electrode active material for a lithium-ion secondary battery that has excellent electrochemical characteristics and makes it possible to reduce the amount of greenhouse gases (GHGs) discharged, a precursor used in the aforementioned method, and a method for manufacturing the precursor. The present invention is a method for manufacturing a precursor of a positive-electrode active material for a lithium-ion secondary battery, the method having an oxidation step for mixing together a metal nickel powder and a lithium-containing compound, and then oxidizing the metal nickel powder after the mixing, the oxidation step resulting in formation of a precursor including nickel oxide having an oxidation rate of 10-70%, the oxidation rate indicating the proportion of the amount of oxidized nickel to the entire amount of Ni contained.Type: ApplicationFiled: September 21, 2023Publication date: September 3, 2026Applicant: Proterial, Ltd.Inventors: Takashi Nakabayashi, Hisato Tokoro, Shuichi Takano
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Patent number: 12722700Abstract: A position detection device, configured to detect a position of a shaft that moves forward and backward in an axial direction, is provided with an excitation coil that generates an alternating magnetic field; a target which is fixed to the shaft and in which a magnetic flux of the alternating magnetic field is interlinked; and a detection coil in which the magnetic flux of the alternating magnetic field is interlinked, wherein the detection coil has a first portion and a second portion, where an induced voltage is generated by the magnetic flux of the alternating magnetic field being interlinked, and a connecting path connecting the first portion and the second portion. The first portion and the second portion respectively extend along the axial direction and the coil longitudinal direction parallel to the axial direction and at least a portion of each is aligned in an alignment direction perpendicular to the axial direction.Type: GrantFiled: April 23, 2024Date of Patent: September 1, 2026Assignee: Proterial, Ltd.Inventors: Yohei Shirakawa, Yoshiaki Yanagisawa, Yuta Sugiyama, Naoki Futakuchi
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Patent number: 12723297Abstract: A hot work tool steel or hot work tool contains, in mass %, 0.25 to 0.45% of C, 0.1 to 0.4% of Si, 0.5 to 0.9% of Mn, 0.2 to 0.6% of Ni, 4.9 to 5.5% of Cr, 1.9 to 2.3% of Mo or 1/2W by itself or 1.9 to 2.3% of (Mo+1/2W) in combination, 0.6 to 0.9% of V, and a balance of Fe and impurities, and value A and value B calculated by the following Formula 1 and Formula 2 satisfy that value A is 6.00 or more and value B is 1.00 or less. Value ? A = - 0.7 ? ( % ? Si ) + 1.5 ( % ? Mn ) + 1.3 ( % ? Ni ) + 0.9 ( % ? Cr ) + 0.6 ( % ? ( Mo + 1 / 2 ? W ) ) + 0.3 ( % ? V ) Formula ? 1 Value ? B = 1.9 ( % ? C ) + 0.043 ( % ? Si ) + 0.12 ( % ? Mn ) + 0.09 ( % ? Ni ) + 0.042 ( % ? Cr ) + 0.03 ( % ? ( Mo ) + 1 / 2 ? W ) ) - 0.Type: GrantFiled: May 30, 2023Date of Patent: September 1, 2026Assignee: Proterial, Ltd.Inventors: Yousuke Nakano, Shiho Fukumoto, Kouta Kataoka
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Patent number: 12727219Abstract: A new substrate manufacturing method of obtaining a SiC epitaxial substrate having excellent flatness and a SiC epitaxial substrate having excellent flatness are provided. In a Sic epitaxial substrate having an epitaxial film obtained by epitaxially growing silicon carbide on a front surface of a silicon carbide substrate, the SiC epitaxial substrate has a first main surface made of the epitaxial film and a second main surface opposite to the first main surface. A maximum value of SBIR on the second main surface based on a 10 mm square site satisfies a condition of 0.1 ?m or more and 1.5 ?m or less.Type: GrantFiled: January 30, 2023Date of Patent: September 1, 2026Assignee: PROTERIAL, LTD.Inventors: Sadahiko Kondo, Junya Ikeda