Patents Assigned to PROTERIAL, LTD.
  • Publication number: 20240043948
    Abstract: A method for manufacturing an austenitic stainless steel strip comprises: hot-rolling a material having a component composition containing, in % by mass, more than 20.0% and 30.0% or less of Ni, more than 15.0% and 18.0% or less of Cr, 1.0 to 2.0% of Mo, 3.5% or more and less than 5.0% of Al, more than 1.0% and 2.0% or less of Nb+Ta, 0.3% or less of Ti+V, 1.0% or less of Si, 2.0% or less of Mn, 0.01 to 0.3% of Zr, 0.005 to 0.045% of C, 0.001 to 0.03% of B, and also containing at least one element selected from Y, La, Ce and Hf in an amount such that the content of Y+La+Ce+Hf+Zr can become 0.01 to 0.5% with the remainder comprising Fe and unavoidable impurities; cold-rolling the strip; and heating the strip, then maintaining the strip at that temperature, and rapid-cooling the strip.
    Type: Application
    Filed: June 17, 2021
    Publication date: February 8, 2024
    Applicant: Proterial, Ltd.
    Inventors: Shogo Momono, Shinichiro Fukada, Toshihiro Uehara
  • Patent number: 11890665
    Abstract: Provided is a metal gasket including, expressed in mass%, C: 0.10% or less, Si: 1.0% or less, Mn: 2.0% or less, P: 0.04% or less (including 0%), S: 0.01% or less (including 0%), Ni: 25.0-60.0%, Cr: 10.0-20.0%, either Mo or W alone, or both Mo+W/2: 0.05-5.0%, Al: more than 0.8% to 3.0% or less, Ti: 1.5-4.0%, Nb: 0.05-2.5%, V: 1.0% or less (including 0%), B: 0.001-0.015%, Mg: 0.0005-0.01%, S/Mg: 1.0 or less, N: 0.01% or less (including 0%), and O: 0.005% or less (including 0%), with the remainder being Fe and unavoidable impurities. The metal gasket has a metal structure in which a precipitate ?? phase having an average equivalent circle diameter of 25 nm or larger is not present within the austenite base.
    Type: Grant
    Filed: August 25, 2022
    Date of Patent: February 6, 2024
    Assignee: PROTERIAL, LTD.
    Inventors: Toshihiro Uehara, Junichi Nishida
  • Patent number: 11891535
    Abstract: A coating film is provided in a cable, a medical hollow tube, a molded article and a hollow tube. The coating film is formed from a rubber composition including a rubber component and fine particles. A static friction coefficient on a surface of the coating film is 0.5 or less. When the coating film is subjected to a testing such that a long fiber non-woven fabric including cotton linters including an alcohol for disinfection with a length of 50 mm along a wiping direction is brought contiguous to the surface of the coating film at a shearing stress of 2×10?3 MPa to 4×10?3 MPa, followed by wiping off the surface of the coating film at a speed of 80 times/min to 120 times/min and 20,000 repetitions thereof for a wiping direction length of 150 mm, a difference (an absolute value of a difference) between the static friction coefficients of the coating film before and after the testing is not greater than 0.1.
    Type: Grant
    Filed: January 26, 2022
    Date of Patent: February 6, 2024
    Assignee: PROTERIAL, LTD.
    Inventors: Seiichi Kashimura, Masamichi Kishi, Naoto Teraki, Takanobu Watanabe, Yuriko Kiyokane
  • Publication number: 20240034685
    Abstract: A silicon carbide ceramic honeycomb structure having large numbers of axially penetrating flow paths partitioned by porous silicon carbide cell walls, the cell walls having porosity of 35-50% and a median pore diameter of 8-18 ?m, when a straight line C is drawn in parallel with the cell wall surface such that it passes a center in the direction of the thickness T of the cell wall, and straight lines are drawn in parallel with the straight line C such that they are separate from the straight line C by ±T/5 and ±2T/5 in the thickness direction of the cell wall, to measure the lengths (pore widths) of pore portions crossing each straight line, and the number of pores crossing each straight line, in a cell wall cross section perpendicular to the axial direction, an average pore width W determined by averaging the lengths (pore widths) of all measured pore portions being 10-25 ?m, and the number N of pores per length determined by dividing the total number of the measured pores by the total length of the straight
    Type: Application
    Filed: March 23, 2022
    Publication date: February 1, 2024
    Applicant: PROTERIAL, LTD.
    Inventor: Kenichiro SHIMIZU
  • Patent number: 11883880
    Abstract: The present invention provides an alloy, an alloy powder, an alloy member, and a composite member which are excellent in corrosion resistance and wear resistance, have crack resistance, and are suitable for an additive manufacturing method and the like. An alloy and an alloy powder include, by mass %, Cr: 18 to 22%, Mo: 18 to 28%, Ta: 1.5 to 57%, C: 1.0 to 2.5%, Nb: 0 to 42%, Ti: 0 to 15%, V: 0 to 27%, Zr: 0 to 29%, and a remainder consisting of Ni and unavoidable impurities, where a molar ratio of (Ta+0.7Nb+Ti+0.6V+Zr)/C=0.5 to 1.5 is satisfied. An alloy member is an additively manufactured product or a cast having such a solidification structure, and the solidification structure is a dendrite-like crystal structure having a metal phase having a face-centered cubic structure and carbides.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: January 30, 2024
    Assignee: PROTERIAL, LTD.
    Inventors: Hiroshi Shiratori, Kazuya Shinagawa, Kousuke Kuwabara, Shuho Koseki
  • Publication number: 20240026503
    Abstract: Along with higher performance of products, materials are also required to achieve both a high strength and favorable magnetic properties according to applications of products. Therefore, the present invention provides an Fe—Co-based alloy bar which enables both a high strength and favorable magnetic properties to be achieved. An Fe—Co-based alloy bar contains 30% to 80% of crystal grains having a grain orientation spread (GOS) value of 0.5° or more in terms of an area ratio, and having an average crystal grain size number of more than 8.5 and 12.0 or less. The Fe—Co-based alloy bar of the present invention has a high 0.2% yield strength after magnetic annealing so that it can support various high-strength applications.
    Type: Application
    Filed: September 14, 2021
    Publication date: January 25, 2024
    Applicant: Proterial, Ltd.
    Inventors: Daiki Kato, Hidetaka Yakabe, Masaru Fujiyoshi, Shujiroh Uesaka, Shinsuke Sasabe
  • Patent number: 11877513
    Abstract: This method is for manufacturing a thermoelectric conversion module in which a first conductive member, a thermoelectric conversion element, a second conductive member are joined by joining members, the method comprising: a step for, after applying on the first conductive member a first paste including metal particles, disposing the thermoelectric conversion element on the first paste, and compressing and spreading the first paste; a step for disposing the second conductive member, after applying a second paste including metal particles in a controlled amount, on the thermoelectric conversion element, and compressing and spreading the second paste; and a step for sintering the first and the second pastes to obtain joining members.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: January 16, 2024
    Assignee: Proterial, Ltd.
    Inventors: Tomotake Tohei, Takashi Nogawa, Nan Wang, Michiko Matsuda, Takeshi Shimada
  • Patent number: 11875922
    Abstract: An insulated electric wire is composed of a conductor, and a covering layer disposed around an outer circumference of the conductor. The covering layer has a plurality of flame retardant layers composed of a flame retardant resin composition, and an insulating layer interposed between the plurality of flame retardant layers. The insulating layer is made of a resin composition including a resin component, and the resin component includes 40% by mass or more of a resin having a melting point of 125 degrees C. or higher of 100% by mass of the resin component.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: January 16, 2024
    Assignee: PROTERIAL, LTD.
    Inventors: Tamotsu Kibe, Motoharu Kajiyama, Masafumi Kaga
  • Patent number: 11870245
    Abstract: A surge suppression device includes a plurality of series circuits each of which is composed of a resistor and a capacitor, a case in which a plurality of the resistors and a plurality of the capacitors are placed, wherein respective ends of the plurality of series circuits on the capacitor side are electrically connected to each other via a connection electrode provided on the case. A motor wiring component includes a plurality of conductive wires connected to stator coils of the motor, wiring terminals that are provided at ends of the plurality of conductive wires on a side opposite to the side connected to the stator coils and are connected to electrodes of a terminal block, and the surge suppression device.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: January 9, 2024
    Assignee: PROTERIAL, LTD.
    Inventor: Keisuke Fukuchi
  • Patent number: 11870237
    Abstract: A surge suppression circuit is used in a rotating electrical machine system including a switching circuit composed of a plurality of switching elements and a rotating electrical machine connected thereto via an electrically conducting path comprising a plurality of electrically conductive bodies. The surge suppression circuit suppresses surge voltage generated in a plurality of connecting lines connecting the plurality of electrically conductive bodies to windings of plural phases of the rotating electrical machine. The surge suppression circuit includes a plurality of upper diodes with anodes respectively connected to the plurality of connection lines, a plurality of lower diodes with cathodes respectively connected to the plurality of connection lines, an upper line connected to respective cathodes of the plurality of upper diodes, a lower line connected to respective anodes of the plurality of lower diodes, and a voltage holding circuit connected between the upper line and the lower line.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: January 9, 2024
    Assignee: PROTERIAL, LTD.
    Inventors: Yuta Sugiyama, Haruyasu Komano
  • Patent number: 11867717
    Abstract: An air gap of a rotation speed sensor is increased. A rotation speed sensor according to one embodiment includes: a sensor component having magnetic sensing elements; and a magnetic plate that is arranged between the sensor component and a magnet and that is made of a magnetic material. In a first direction that is a direction in which the sensor component, the magnetic plate and the magnet are arranged, the magnetic plate includes an opening that is formed at a position overlapping center of a line connecting respective centers of the magnetic sensing elements.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: January 9, 2024
    Assignee: PROTERIAL, LTD.
    Inventors: Kazuhiko Tomita, Kento Okuyama, Kei Kawano
  • Patent number: 11866798
    Abstract: Provided is a method for manufacturing a magnetostrictive torque sensor shaft mounting a sensor portion of a magnetostrictive torque sensor. The method includes conducting heat treatment on a shaft material including chrome steel or chrome-molybdenum steel by carburizing, quenching and tempering, and conducting shot peening on the shaft material after the heat treatment at least on a position where the sensor portion is to be mounted. The shot peening is conducted by firing shot with a particle size of not less than 0.6 mm and a Rockwell hardness of not less than 60 at a jet pressure of not less than 0.4 MPa for a jet exposure time of not less than 2 minutes.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: January 9, 2024
    Assignee: PROTERIAL, LTD.
    Inventor: Teruyuki Nakamura
  • Patent number: 11865608
    Abstract: A manufacturing efficiency of the wire rod made of the cast alloy including the additive element having the high activity to the oxygen is improved. An apparatus of manufacturing a wire rod includes: a tundish storing a molten metal; a mold for use in continuously casting the molten metal fed from the tundish; and an additive-element feeding unit continuously feeding an additive element (wire) to a feeding port of the mold.
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: January 9, 2024
    Assignee: Proterial, Ltd.
    Inventors: Keisuke Fujito, Takayuki Tsuji, Shohei Hata
  • Publication number: 20240001445
    Abstract: Provided are a method for manufacturing an alloy member, and an alloy member, the alloy member having excellent mechanical properties and corrosion resistance, and further having abrasion resistance, and being manufactured by an additive manufacturing method using an alloy powder. The method for manufacturing an alloy member is characterized by having: an additive manufacturing step for forming an alloy substrate by means of a laminate shaping method using an alloy powder comprising, in an amount range of 5 atomic % to 35 atomic %, respectively, each element of Co, Cr, Fe, Ni, and Ti, and in an amount of 0 atomic % to 8 atomic % (exclusive of 0 atomic %) of Mo, with the balance being unavoidable impurities; and a surface treatment step for performing a surface treatment on the alloy substrate.
    Type: Application
    Filed: November 2, 2021
    Publication date: January 4, 2024
    Applicant: Proterial, Ltd.
    Inventors: Shuho Koseki, Kousuke Kuwabara, Fumiaki HONDA
  • Patent number: 11858857
    Abstract: A silicon carbide ceramic honeycomb structure having large numbers of axially penetrating flow paths partitioned by porous silicon carbide cell walls, the cell walls comprising silicon carbide particles as aggregate and binder layers for binding the silicon carbide particles, the binder layers having at least a cordierite phase and a spinel phase, and the molar ratio M1 of the cordierite phase [=cordierite phase/(cordierite phase+spinel phase)] being 0.4-0.9.
    Type: Grant
    Filed: March 23, 2022
    Date of Patent: January 2, 2024
    Assignee: PROTERIAL, LTD.
    Inventor: Kenichiro Shimizu
  • Publication number: 20230416881
    Abstract: The present invention provides an Fe—Co-based alloy bar which enables excellent magnetic properties to be reliably obtained. In the Fe—Co-based alloy bar, an area ratio of crystal grains having a grain orientation spread (GOS) value of 0.5° or more exceeds 80%, and the difference between an area ratio of crystal grains having a GOS value of 0.5° or more observed in a cross section in a direction perpendicular to an axis of the bar and an area ratio of crystal grains having a GOS value of 0.5° or more observed in a cross section in an axial direction of the bar is within 10%. Preferably, the average crystal grain size number is 6.0 or more and 8.5 or less.
    Type: Application
    Filed: September 14, 2021
    Publication date: December 28, 2023
    Applicant: Proterial, Ltd.
    Inventors: Masaru Fujiyoshi, Shujiroh Uesaka, Kouji Kobayashi
  • Patent number: 11854727
    Abstract: A powder magnetic core with terminal includes: a powder magnetic core composed of Fe-based alloy particles including Fe and an element M (M is Cr and/or Al) which is more easily oxidizable than Fe; and at least two terminals formed at an interval on a surface of the powder magnetic core. The powder magnetic core includes the Fe-based alloy particles, and an underlayer including the element M (M is Cr and/or Al), Fe and O formed on a surface of the Fe-based alloy particles. A first layer including at least one of Cr or Al and O is formed on a surface including a region in which the terminals of the powder magnetic core are formed. The terminals are formed on a surface of the first layer. Each of the terminals includes a second layer including one of Au, Ag, Cu, Ti or Cr.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: December 26, 2023
    Assignee: PROTERIAL, LTD.
    Inventor: Akio Uchikawa
  • Patent number: 11854713
    Abstract: A cable includes a plurality of electric wires including a conductor and an insulating member coating a periphery of the conductor, a tape member provided over a periphery of an aggregate configured by laying the plurality of electric wires together, and an outer sheath provided over an outer periphery of the tape member. The tape member includes a mixture of a first fiber having a melting point and a second fiber having a melting point lower than the melting point of the first fiber. The first fiber has the melting point higher than an extrusion molding temperature of the outer sheath, and the second fiber has the melting point lower than the extrusion molding temperature of the outer sheath.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: December 26, 2023
    Assignee: PROTERIAL, LTD.
    Inventors: Yoshikazu Hayakawa, Tomoyuki Murayama
  • Patent number: 11848119
    Abstract: A high frequency signal transmission cable includes a conductor, an insulator provided over a periphery of the conductor, a plating layer provided over a periphery of the insulator, and a sheath provided over a periphery of the plating layer. A crack suppressing layer includes a non-cross-linked polyethylene is provided between the insulator and the plating layer, in such a manner as to remain in contact with the insulator while being provided with the plating layer over an entire periphery of a roughened outer surface of the crack suppressing layer. The crack suppressing layer is unadhered to the insulator. The plating layer is adhered to the crack suppressing layer. The crack suppressing layer suppresses an occurrence of a cracking in the plating layer by bending together with the plating layer while being integral and moving with the plating layer in a longitudinal direction of the cable.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: December 19, 2023
    Assignee: PROTERIAL, LTD.
    Inventors: Detian Huang, Yoshinori Tsukamoto, Masashi Moriyama, Hideyuki Sagawa, Takahiro Sugiyama
  • Patent number: 11845881
    Abstract: A cable includes a sheath, and a coating film covering a circumference of the sheath, the coating film adhering to the sheath. The coating film is formed from a rubber composition including a rubber component and fine particles. A static friction coefficient on a surface of the coating film is 0.5 or less. When the coating film is subjected to a testing such that a long fiber non-woven fabric including cotton linters including an alcohol for disinfection with a length of 50 mm along a wiping direction is brought contiguous to the surface of the coating film at a shearing stress of 2×10?3 MPa to 4×10?3 MPa, followed by wiping off the surface of the coating film at a speed of 80 times/min to 120 times/min and 20,000 repetitions thereof for a wiping direction length of 150 mm, a difference (an absolute value of a difference) between the static friction coefficients of the coating film before and after the testing is not greater than 0.1.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: December 19, 2023
    Assignee: PROTERIAL, LTD.
    Inventors: Seiichi Kashimura, Masamichi Kishi, Naoto Teraki, Takanobu Watanabe, Yuriko Kiyokane