Patents Assigned to PROTERIAL, LTD.
  • Patent number: 12322531
    Abstract: A composite cable includes a plurality of power lines, one signal line unit, and a sheath collectively covering the plurality of power lines and the one signal line unit. The signal line unit includes a plurality of pairs of signal lines, and an inner sheath covering a first assembled article. The first assembled article is formed by arranging the signal lines to be paired at each pair of opposing vertices of a polygon with an even number of vertices in a cross-section perpendicular to a longitudinal direction of the signal line unit and twisting all the signal lines together.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: June 3, 2025
    Assignee: PROTERIAL, LTD.
    Inventors: Yoshikazu Hayakawa, Tomoyuki Murayama, Hirotaka Eshima, Takahiro Futatsumori
  • Publication number: 20250154629
    Abstract: Provided are an alloy having high hardness at high temperatures and high crack resistance, a powder consisting of the alloy, and an alloy member and a composite member including the alloy. The alloy includes, in % by mass, Cr at 10% to 20%, C at 1.0% to 2.5%, Ti at 3% to 8%, either or both of Nb and Ta at 8% to 15% in total, B at less than 0.5%, Al at 2% or less, Mo at 8% or less, W at 8% or less, a total of Mo and W being less than 10%, and a balance consisting of Ni and inevitable impurities, wherein a ratio of a total number of Ti, Nb, and Ta atoms to a number of C atoms is more than 1.5.
    Type: Application
    Filed: May 1, 2023
    Publication date: May 15, 2025
    Applicant: PROTERIAL, LTD.
    Inventors: Hiroshi SHIRATORI, Shuho KOSEKI, Kousuke KUWABARA, Noriyuki NOZAWA, Shinya OKAMOTO, Toshimi MIYAGI
  • Patent number: 12290853
    Abstract: A method for manufacturing a hot-forged member includes heating an unheated material for hot forging in a furnace to a hot forging temperature; bonding a heat-resistant insulation material to at least a part of a surface of a material for forging removed from the furnace to obtain a material to be hot forged; and compressing a part or all of the material to be hot forged into a predetermined shape using any of a die, an anvil, and a tool.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: May 6, 2025
    Assignee: PROTERIAL, LTD.
    Inventors: Yoji Yamashita, Chuya Aoki, Shinichi Kobayashi
  • Patent number: 12281952
    Abstract: The manufacturing method includes: performing testing of samples having the same configuration as the torque measuring device to be manufactured to find a coil balance Cb that is a ratio (R1×R3)/(R2×R4) of a product R1×R3 of resistance values R1 and R3 of one pair of opposite sides of the four sides of a bridge circuit 8, and a product R2×R4 of resistance values R2 and R4 of another pair of opposite sides of the four sides, and a temperature change rate VT of output voltage Vo of a sensor portion 4, and acquiring a relationship X between the coil balance Cb and the temperature change rate VT from the test results; and measuring the resistance values R1, R2, R3, R4 of the four sides to find the coil balance Cb to find the temperature change rate VT from the relationship X for the torque measuring device to be manufactured.
    Type: Grant
    Filed: February 28, 2023
    Date of Patent: April 22, 2025
    Assignees: NSK LTD., PROTERIAL, LTD.
    Inventors: Masahiro Kobayashi, Kota Fukuda, Hisayoshi Fukui, Takahiro Odera, Haruhiko Tanno, Yoshinori Kubo, Naoki Futakuchi, Ken Okuyama, Teruyuki Nakamura
  • Patent number: 12264389
    Abstract: An Fe-based amorphous alloy ribbon reduced in iron loss, less deformed, and highly productive in a condition of a magnetic flux density of 1.45 T is provided. One aspect of the present disclosure provides an Fe-based amorphous alloy ribbon having first and second surfaces, and is provided with continuous linear laser irradiation marks on at least the first surface. Each linear laser irradiation mark is formed along a direction orthogonal to a casting direction of the Fe-based amorphous alloy ribbon, and has unevenness on its surface. When the unevenness is evaluated in the casting direction, a height difference HL×width WA calculated from the height difference HL between a highest point and a lowest point in a thickness direction of the Fe-based amorphous alloy ribbon and the width WA which is a length of the linear irradiation mark on the first surface is 6.0 to 180 ?m2.
    Type: Grant
    Filed: January 11, 2024
    Date of Patent: April 1, 2025
    Assignee: PROTERIAL, LTD.
    Inventors: Hajime Itagaki, Morifumi Kuroki, Makoto Sasaki, Shin Nakajima
  • Patent number: 12251760
    Abstract: A magnetic core powder including granular powder A of Fe-based, magnetic, crystalline metal material and granular powder B of Fe-based, magnetic, amorphous metal material; the particle size d50A of granular powder A at a cumulative frequency of 50 volume % being 0.5 ?m or more and 7.0 ?m or less, and the particle size d50B of granular powder B at a cumulative frequency of 50 volume % being more than 15.0 ?m, in a cumulative distribution curve showing the relation between particle size and cumulative frequency from the smaller particle size side, determined by a laser diffraction method; the magnetic core powder meeting (d90M?d10M)/d50M of 1.6 or more and 6.0 or less, d10M being a particle size at a cumulative frequency of 10 volume %, d50M being a particle size at a cumulative frequency of 50 volume %, and d90M being a particle size at a cumulative frequency of 90 volume %.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: March 18, 2025
    Assignee: PROTERIAL, LTD.
    Inventors: Tetsuro Kato, Nobuhiko Chiwata, Motoki Ohta
  • Publication number: 20250075296
    Abstract: Provided is an alloy material that can improve mechanical properties in a high-temperature environment, an alloy product using the alloy material, and a machine device provided with the alloy product. The alloy material is an alloy material containing each of Co, Cr, Fe, and Ni in a range of 5 at % to 40 at %, Mo in a range of more than 0 at % and 8 at % or less, Ti in a range of 1 at % to 10 at %, and B in a range of more than 0 at % and less than 0.15 at % with a remainder consisting of inevitable impurities. This alloy material may contain B in a range of 0.03 at % to 0.12 at % and may contain at least one of Ta and Nb in a range of 4 at % or less. Preferably, the Ti and the at least one of Ta and Nb are contained at a total of 3 at % to 10 at %.
    Type: Application
    Filed: June 7, 2022
    Publication date: March 6, 2025
    Applicant: PROTERIAL, LTD.
    Inventors: Tatsuya KIMURA, Hiroshi SHIRATORI, Kousuke KUWABARA
  • Patent number: 12230418
    Abstract: A composite cable is provided with a coaxial wire and an insulated wire. The coaxial wire includes a center conductor, a first insulation covering the center conductor, and plural outer conductors arranged on an outer periphery of the first insulation, and a jacket covering the plural outer conductors. The insulated wire includes a stranded conductor including plural strands twisted together, and a second insulation covering the stranded conductor. The center conductor of the coaxial wire is a single wire. A conductor diameter of the center conductor is not more than a wire diameter of each of the plural strands of the insulated wire.
    Type: Grant
    Filed: September 15, 2022
    Date of Patent: February 18, 2025
    Assignee: PROTERIAL, LTD.
    Inventors: Atsuro Yaguchi, Detian Huang, Takanobu Watanabe, Kotaro Tanaka, Kimika Kudo
  • Patent number: 12224093
    Abstract: A multilayer magnetic sheet includes at least one first layer in which a plurality of magnetic strips are arranged side by side; at least one second layer in which the plurality of magnetic strips are arranged side by side, a direction of the long side of the at least one second layer intersecting that of the at least one first layer; and at least one third layer in which the plurality of magnetic strips are arranged side by side, a direction of the long side of the at least one third layer being the same as that of the at least one first layer. A position of the long side in the at least one first layer and a position of the long side in the at least one third layer are separated from each other by 0.5 mm or more in a direction in which the short side extends.
    Type: Grant
    Filed: April 4, 2023
    Date of Patent: February 11, 2025
    Assignee: PROTERIAL, LTD.
    Inventors: Yasuo Kuriyama, Kouhei Miyano, Yuichi Ogawa
  • Patent number: 12205989
    Abstract: A method for manufacturing a silicon carbide epitaxial substrate which has a first surface which is a (000-1) C-face, a silicon carbide epitaxial layer located on the first surface of the silicon carbide substrate, and a line-shaped surface defect density on a top surface of the silicon carbide epitaxial layer is less than 1.0 cm?2 and a stacking fault density is less than 1.2 cm?2.
    Type: Grant
    Filed: March 4, 2022
    Date of Patent: January 21, 2025
    Assignee: PROTERIAL, LTD.
    Inventors: Tsuyoshi Miura, Hodaka Ichikawa, Naoya Kimura, Hiroyuki Okuda, Taisuke Hirooka
  • Patent number: 12198827
    Abstract: A cable includes: a cable core including one or more electrical wires; a shield layer made of a metallic wire arranged on a periphery of the cable core; and a sheath arranged on a periphery of the shield layer. The metallic wire is made of a copper alloy wire made of a copper alloy containing indium, a content of which is equal to or more than 0.3 mass % and equal to or less than 0.65 mass %, and the metallic wire has tensile strength that is equal to or higher than 350 MPa and elongation that is equal to or higher than 7%.
    Type: Grant
    Filed: February 18, 2022
    Date of Patent: January 14, 2025
    Assignee: PROTERIAL, LTD.
    Inventors: Tamotsu Sakurai, Masanori Kobayashi, Setsuo Kobayashi, Hiromitsu Kuroda
  • Patent number: 12187650
    Abstract: A silicon carbide ceramic honeycomb structure having large numbers of axially penetrating flow paths partitioned by porous silicon carbide cell walls and being formed by integrally bonding honeycomb segments by binder layers, the cell walls having porosity of 40-50% and a median pore diameter of 8-18 ?m, an average pore width W determined by averaging the lengths (pore widths) of all measured pore portions being 10-25 ?m, the number N of pores per length determined by dividing the total number of the measured pores by the total length of the straight lines used for measurement being 20-40/mm, and the volume of pores having pore diameters of 20 ?m or more being 10-20% of the total pore volume in the cell walls and the volume of pores having pore diameters of 9 ?m or less being 3-25% of the total pore volume in the cell walls, measured by mercury porosimetry.
    Type: Grant
    Filed: April 19, 2024
    Date of Patent: January 7, 2025
    Assignee: PROTERIAL, LTD.
    Inventor: Kenichiro Shimizu
  • Patent number: 12191071
    Abstract: A nonmagnetic insulating metal oxide powder is made to adhere to a surface of a soft magnetic metal ribbon having an amorphous structure; this is wound in annular fashion and made into a wound body at which the metal oxide powder intervenes between ribbon layers; the wound body is made to undergo heat treatment in a nonoxidizing atmosphere; the wound body is thereafter subjected to treatment for formation of an oxide film in an oxidizing atmosphere adjusted to be at a temperature lower than that at the heat treatment to cause oxidation of the surface of the soft magnetic metal ribbon; and spaces between ribbon layers at the wound body are moreover impregnated with resin and curing is carried out to fuse the metal oxide powder thereto.
    Type: Grant
    Filed: June 7, 2023
    Date of Patent: January 7, 2025
    Assignee: PROTERIAL, LTD.
    Inventor: Tsugitomo Nakada
  • Patent number: 12168253
    Abstract: Provided is a ring-rolled member manufacturing method enabling stabilization of the attitude of the ring material without generating a defect and the like in the resulting ring-rolled member even when the main roll of the ring-rolling device is provided with the flange portions positioned on upper and lower sides of the ring material. A ring-rolling device used in the ring-rolled member manufacturing method of the present invention is provided with a main roll 10 and a mandrel roll 20. An outer peripheral face of the main roll includes a recessed portion 12 to accommodate the ring material and an outer peripheral face of the mandrel roll 20, an upper flange portion 11 positioned on an upper side thereof, and a lower flange portion 13 positioned on a lower side thereof.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: December 17, 2024
    Assignee: PROTERIAL, LTD.
    Inventors: Kazuya Musha, Jun Ohsone, Yuji Ishiwari, Momoko Oji
  • Patent number: 12159730
    Abstract: A signal transmission cable includes a conductor, an insulator covering a periphery of the conductor, and a shield layer covering a periphery of the insulator. The shield layer includes a lateral winding shield portion composed of a plurality of metal wires being helically wrapped around the periphery of the insulator to cover the periphery of the insulator, and a batch plating portion composed of a hot dip plating, which is covering a periphery of the lateral winding shield portion. Where a diameter of the metal wire is d and a thickness of the batch plating portion from an outer surface of the metal wire is t, a formula t<0.5d is met over an entire cable circumference. When the signal transmission cable is bent in a U-shape within a range of a bending strain of 35% or less, no cracks occur in the batch plating portion.
    Type: Grant
    Filed: June 10, 2022
    Date of Patent: December 3, 2024
    Assignee: PROTERIAL, LTD.
    Inventors: Hiromitsu Kuroda, Tamotsu Sakurai, Yoshiki Nakade, Detian Huang, Xinweilong Li
  • Publication number: 20240390973
    Abstract: This invention provides a composite material that is durable in a hot environment and easily produced. The composite material according to the invention has an overlaid part comprising high-melting-point metal in at least a part on the surface of a low-melting-point alloy member having a melting point of 1600° C. or lower. The overlaid part comprising high-melting-point metal comprises high-melting-point metal particles comprising high-melting-point metal elements having a melting point of 2400° C. or higher scattered therein and comprises the high-melting-point metal elements that account for 50% by mass to 95% by mass thereof.
    Type: Application
    Filed: November 22, 2022
    Publication date: November 28, 2024
    Applicant: PROTERIAL, LTD.
    Inventors: Hiroshi SHIRATORI, Shuho KOSEKI, Shinsuke ANDO, Kousuke KUWABARA, Shinya OKAMOTO
  • Publication number: 20240383032
    Abstract: This invention provides a composite material that is durable in a hot environment and easily produced. The composite material according to the invention has an overlaid part comprising high-melting-point metal in at least a part on the surface of a low-melting-point alloy member having a melting point of 1600° C. or lower. The overlaid part comprising high-melting-point metal comprises high-melting-point metal particles comprising high-melting-point metal elements having a melting point of 2400° C. or higher scattered therein, and 40% or more of the high-melting-point metal particles has a roundness of 0.7 or higher. The low-melting-point alloy member comprises one type of a low-melting-point alloy selected from among a Fe-based alloy, a Ni-based alloy, a Co-based alloy, a Ti-based alloy, a Cr-based alloy, and a high-entropy alloy and the high-melting-point metal particles comprise at least one type of high-melting-point metal element selected from among W, Ta, Mo, and Nb.
    Type: Application
    Filed: March 1, 2023
    Publication date: November 21, 2024
    Applicant: PROTERIAL, LTD.
    Inventors: Yuri ITO, Shuho KOSEKI, Kousuke KUWABARA, Shinya OKAMOTO
  • Publication number: 20240376573
    Abstract: The invention provides a cermet composite material that can improve a bond strength between a cermet part and a non-cermet part without heat treatment at high temperature. The cermet composite material according to the invention comprises a cermet part including hard carbides dispersed in a metallic phase and a non-cermet part consisting of a Ni-based alloy including 50% by mass or more of Ni with the cermet part being formed on the non-cermet part by additive manufacturing, wherein the cermet composite material comprises an intermediate layer including both components of the cermet part and components of the non-cermet part between the cermet part and the non-cermet part, and the non-cermet part consists of the Ni-based alloy including 3.0% by mass to 15.0% by mass of Ti or the Ni-based alloy including 0.5% by mass to less than 3.0% by mass of Ti and 4% by mass to 15% by mass of Nb and Ta in total.
    Type: Application
    Filed: February 10, 2022
    Publication date: November 14, 2024
    Applicant: PROTERIAL, LTD.
    Inventors: Hiroshi SHIRATORI, Shuho KOSEKI, Shinya OKAMOTO, Kousuke KUWABARA, Shinsuke ANDOH
  • Publication number: 20240368042
    Abstract: A ceramic honeycomb structure comprising pluralities of honeycomb segments each having pluralities of longitudinally penetrating flow paths partitioned by porous cell walls and plugs formed in the end portions of the flow paths, and a bonding material layer boding the peripheral walls of the honeycomb segments, the bonding material layer comprising silicon carbide particles as aggregate and a bonding phase bonding the silicon carbide particles, the bonding phase comprising at least a cordierite phase and a spinel phase, the molar ratio M1 of the cordierite phase [=cordierite phase/(cordierite phase+spinel phase)] being 0.50 or more and less than 1.0, and the content of (cordierite phase+spinel phase) in the bonding phase being 50% or more by mass.
    Type: Application
    Filed: September 21, 2022
    Publication date: November 7, 2024
    Applicant: PROTERIAL, LTD.
    Inventors: Shunji OKAZAKI, Kenichiro SHIMIZU, Toshitaka ISHIZAWA
  • Patent number: 12115660
    Abstract: A cable status management system for managing a wire-break progress of a cable used in a managed device is provided with a cable status management device having a cable status storage unit that stores a wire-break progress data indicating the wire-break progress in the cable, a device user-side data management device that belongs to a device user that uses the managed device, a device manufacturer terminal that belongs to a device manufacturer that manufactures the managed device, and a cable manufacturer terminal that belongs to a cable manufacturer that manufactures the cable. At least the device manufacturer terminal and the cable manufacturer terminal are configured to be accessible with the wire-break progress data stored in the cable status storage unit via a network.
    Type: Grant
    Filed: June 7, 2022
    Date of Patent: October 15, 2024
    Assignee: PROTERIAL, Ltd.
    Inventors: Hideki Nonen, Izumi Fukasaku, Ayano Kato, Kei Nishimura, Takahiro Sugiyama, Noriyuki Imai, Takahiro Sato