Patents for November 2025
Patents for the November/December 2025 issue of WCTI as compiled by our editors.
Stranded Fiber-Optic Cable
US Patent 12436347
Published October 7, 2025
Inventors: Joseph Varkey, Richmond, TX, USA; Maria Grisanti, Missouri City, TX, USA; and David Kim, Katy, TX, USA
Assignee: Schlumberger Technology Corporation, Sugar Land, TX, USA
A fiber optic bundle for incorporation into a cable for use in a well. The bundle includes multiple fiber optic threads that are helically wound about one another at a zero degree lay angle for structural reinforcement. Further, the cable that employs the bundle may be coupled in nature and gas proof thereby rendering the fiber optics mechanically responsive for improved accuracy in detections during use in a well application.
Covered Wire
US Patent 12437899
Published October 7, 2025
Inventors: Kentra Kobayashi, Mie, Japan; Takeo Maruchi, Mie, Japan; and Hiroyuki Yoshikawa, Mie, Japan
Assignee: Sumitomo Wiring Systems, Ltd., Mie, Japan
Disclosed is a covered wire including: a tubular member through which a coolant flows; a conductor provided on an outer circumference of the tubular member; and a covering member covering an outer circumference of the conductor, wherein the tubular member and the covering member are insulating, and the tubular member has a higher resistance to the coolant than the covering member.
Method of Cutting Shielding Conductor of a High Voltage Cable and Apparatus to be Used Therefore
US Patent 12438347
Published October 7, 2025
Inventors: John Kightlinger, Canfield, OH, USA; and Shawn Alan Chernushin, Columbiana, OH, USA
Assignee: Aptiv Technologies AG, Schaffhausen, Switzerland
An apparatus for cutting a previously flared shield conductor of a shielded electrical cable includes a two-piece clamping die having an aperture in which the shielded electrical cable is secured and a cutting surface. The clamping die is opened and closed around the shielded electrical cable. The apparatus further includes a cutting tube configured to be pressed against the cutting surface while the flared shield conductor is between the cutting tube and the cutting surface, thereby cutting a portion of a free end of the flared shield conductor. Alternatively, the apparatus may include a die comprising a cutting surface and an aperture in which the end of the shielded electrical cable is received. The cutting tube has two parts that are closed about the shielded electrical cable and pressed against the cutting surface while the flared shield conductor is disposed between the cutting tube and the cutting surface.
Wire Cable with Magnetic Attraction Effect and Preparation Method Thereof
US Patent 12437907
Published October 7, 2025
Inventors: Anyun Yu, Guangdong, China; and Hongyun Yu, Guangdong, China
Assignee: Anyan Yu, Guangdong, China
The present application relates to a wire cable with a magnetic attraction effect and a preparation method thereof. The wire cable sequentially includes a braid layer, a protective layer and a magnetic attraction layer from exterior to interior. The magnetic attraction layer is prepared from the following raw materials in percentage by weight: 40-50% of a thermoplastic elastomer, 2-3% of a compatilizer, 3-6% of a stabilizer, 5-10% of a lubricant, 10-15% of a phenolic resin and a balance of a magnetic attraction filler; and the protective layer is prepared from the following raw materials in percentage by weight: 80-90% of the thermoplastic elastomer, 1-2% of the compatilizer, 0.5-1% of a flexibilizer and a balance of the phenolic resin. By means of the magnetic attraction layer, wires can be adsorbed easily and arranged automatically, thereby avoiding a phenomenon that the traditional wires are disordered during use and storage.
High Production Quality Round Wire Rod Using a Slit Rolling Process
US Patent 12427563
Published September 30, 2025
Inventors: Steven Morgan, Neath Port Talbot, Great Britain; and Matther D. Palfreman, Charlton, MA, USA
Assignee: Primetals Technologies USA LLC, Alpharetta, GA, USA
Disclosed within is a slit section pass formation unit having a pair of rolls and a de-ribbing means, where the pair of rolls has a roll profile configured to produce a pair of slit rods with symmetrical dimensions, the pair of slit rods connected via a rib, and the de-ribbing means to remove the rib in its entirety forming a first slit rod and a second slit rod.
Hybrid Drop Cable
US Patent 12431262
Published September 30, 2025
Inventor: Alain Lavenne, Sens, France; Marta Garcia San Emeterio, Maliaño, Spain; and Gonzalo Hernandez, Maliaño, Spain
Assignee: Prysmian S.p.A., Milan, Italy
A drop cable includes a transmission core, a strength member arranged alongside the transmission core and an outer sheath surrounding the transmission core and the strength member. The transmission core comprises two insulated conductors and an optical sub-core comprising six or more optical fibers, the optical sub-core and the insulated metallic conductors being stranded together and surrounded by a sleeve. Moreover, a diameter of the strength member is substantially equal to or higher than a diameter of the transmission core.
Wire Rope and an Assembly Comprising Such Wire Rope
US Patent 12421658
Published September 23, 2025
Inventors: Andrew Morgan, Mayfield East, Australia; Hong Hui Sng, Mayfield East, Australia; and Hendrik Rommel, Sint Michiels, Belgium
Assignee: Bridon International Limited, Doncaster, Great Britain
A wire rope for face shovels or draglines, comprising: a core, said core is made from a plurality of core strands a plurality of outer strands laid on said core, a plurality of separator strands located in the interstices between said core strands and said outer strands, a plastic jacket around said plurality of outer strands, said plurality of separator strands and said core strands, wherein said plurality of separator strands extend from said core strands and in-between each pair of said plurality of outer strands so as to produce and maintain gaps between said pair of said plurality of outer strands; wherein said core strands are compacted, and the gap between said core strands is less than 0.4% of the diameter of the core strand.
Electro-Spun Sulfur Wire for Fabricating Mattes of Lithium Sulfur Batteries
US Patent 12424617
Published September 23, 2025
Inventors: Prashant N. Kumta, Pittsburgh, PA, USA; Prashanth Jampani Hanumantha, Pittsburgh, PA, USA; Bharat Gattu, Pittsburgh, PA, USA; and Pavithra Murugavel Shanti, Pittsburgh, PA, USA
Assignee: University of Pittsburgh, Pittsburgh, PA USA
The invention relates to lithium-based battery systems and, more particularly, to electro-spinable solution compositions, electro-spun sulfur-polymer fibers, e.g., wires and yarns, and their use in preparing high performance sulfur mattes, e.g., electrodes, for lithium-sulfur batteries with potential applications in small-scale mobile devices. The sulfur-polymer fibers have nanoscale dimensions and yarn-like morphology. The sulfur-polymer fibers can be prepared by co-dissolving sulfur and polymer in a solvent for forming the electro-spinable solution, and electrospinning the solution. The electrospun fibers can be used to form a composite that includes alternating layers of the electrospun fibers and polymer on a current collector.
Magneto-Sensitive Wire and Manufacturing Method Therefor
US Patent 12422506
Published September 23, 2025
Inventors: Akihiro Shimode, Aichi-ken, Japan; and Shunichi Tatematsu, Aichi-ken, Japan
Assignee: Aichi Steel Corporation, Tokai, Japan
A magneto-sensitive wire for a magnetic sensor with both measurement range expansion and environment resistance performance improvement, includes a Co-based alloy containing more Fe than a reference composition that is amorphous overall and exhibits zero magnetostriction. The Co-based alloy may have an Fe ratio (Fe/(Co+Fe+Ni)) of 6.1% to 9.5%. The Fe ratio is an atomic fraction of the Fe amount with respect to the total amount of a magnetic element group consisting of Co, Fe and Ni. By heating an amorphous wire of a Co-based alloy at a temperate at least equal to a crystallization start temperature and lower than a crystallization end temperature, allows the magneto-sensitive wire to have a composite structure in which crystal grains are dispersed in the amorphous phase. The magneto-sensitive wire’s anisotropy field is, for example, 5 to 70 Oe and the stress sensitivity, indicative of magnetostriction, is −30 to 30 mOe/MPa.
Coaxial Cable
US Patent 12424350
Published September 23, 2025
Inventors: Atsuko Shinomiya, Tochigi, Japan; Kenichiro Iwama, Tochigi, Japan; Motoi Matsuda, Tochigi, Japan; and Yuji Ochi, Tochigi, Japan
Assignee: Sumitomo Electric Industries, Ltd., Osaka, Japan
A coaxial cable includes an inner conductor, an insulation covering the inner conductor, an outer conductor covering the insulation and a sheath covering the outer conductor. The inner conductor is a compressed conductor including a central element wire and multiple peripheral element wires surrounding the central element wire. The inner conductor has a compressibility of 23.0% or more and 35.0% or less in percentage. The compressibility is calculated from a sectional area S1 and the sectional area S2 of the compressed conductor by Compressibility=[1−S2/S1]. The sectional area S1 is calculated from the outside diameter D of the central element wire and the total number n of the central and peripheral element wires by S1=n×π×0.25×D2. The outside diameter of the insulation is 1.25 mm or more and less than 1.75 mm.
Power Cable with Multiple Water Barriers
US Patent 12417863
Published September 16, 2025
Inventors: Sonny Långström, Karlskrona, Sweden; Tommy Johansson, Bräkne-Hoby, Sweden; Johan Jäderberg, Lyckeby, Sweden; Håkan Sandell, Karlskrona, Sweden; and Christoffer Dahl Ryde, Lyckeby, Sweden
Assignee: NKT HV Cables AB, Lyckeby, Sweden
A power cable comprising: a power core including: a conductor, an insulation system including an inner semiconducting layer arranged around the conductor, an insulation layer arranged around the inner semiconducting layer and an outer semiconducting layer arranged around the insulation layer, a first metallic water blocking layer arranged concentrically with and around the outer semiconducting layer, a semiconducting polymer layer arranged concentrically with and around the first metallic water blocking layer and a second metallic water blocking layer arranged concentrically with and around the semiconducting polymer layer; and an outer sheath arranged around the second metallic water blocking layer.
Apparatus and Method for Direct Printing on Corrugated Metal Clad Cable
US Patent 12415368
Published September 16, 2025
Inventor: Jon Kopfer, Huntsville, AL, USA
Assignee: Cerro Wire LLC, Hartselle, AL, USA
An apparatus and method for direct printing on corrugated metal clad cable. The apparatus includes an entrance having one or more entrance rollers, a set of lower rollers, a series of printheads near the entrance, a UV curing station downstream of the printheads, one or more exit rollers, a print controller and a series of ink tanks. The entrance and exit rollers maintain the cable in proper position and alignment for the printheads. The method for printing provides for clear and legible printing on the cable.
Cable
US Patent 12417862
Published September 16, 2025
Inventors: Tamotsu Sakurai, Tokyo, Japan; Hiromitsu Kuroda, Tokyo, Japan; Yoshiki Nakade, Hitachi, Japan; Minoru Takatsuto, Hitachi, Japan; and Atsuro Yaguchi, Tokyo, Japan
Assignee: Proterial, Ltd., Tokyo, Japan
A cable is provided with a cable core including one or more electric wires, a shield layer provided to cover around the cable core and composed of a laterally wound shield formed by winding metal wire strands helically, and a sheath provided to cover around the shield layer. The metal wire strands are semi-hard copper alloy wires and P/PD, which is the ratio of the winding pitch P in the laterally wound shield to the pitch diameter PD of the shield layer, is less than 9.9.
Electrical Cable for the Aerospace Field
US Patent 12412679
Published Septembner 9, 2025
Inventors: Thomas Haehner, Verrieres-le Buisson, France; Patrick Rybski, Yerres, France; Dimitri Charrier, Ecully, France; Adrien Charmetant, Meribel, France; Clara Lagomarsini, Lyons, France; Nabil Mellouky, Lyons, France; and Marcelo Paixao Dantas, Nuremberg, Germany
Assignee: Nexans, Courbevoie, France
An insulated electrically conductive element (1) for the aerospace field has an elongate electrically conductive element surrounded by at least two layers, said two layers being an electrically insulating layer (4) surrounding the elongate electrically conductive element (2) and a first semiconductor layer (5) surrounding said electrically insulating layer (4), at least one of the layers having at least one fluoropolymer.
Hybrid Round Superconductor Wires Using Nb—Ti Filaments
US Patent 12412681
Published September 9, 2025
Inventor: Venkat Selvamanickam, Houston, TX, USA; and Soumen Kar, Houston, TX, USA
A round superconductor wire, method for fabricating same and method for detecting quench in the same are disclosed. A round superconductor wire includes a superconductor wire former and at least one superconductor tape wound on the superconductor wire former. Each superconductor tape includes a substrate, a buffer film stack overlying the substrate and a superconductor film overlying the buffer film stack.
Copper-Coated Aluminum Wire Material and Production Method Therefor
US Patent 12410509
Published September 9, 2025
Inventors: Akihiro Kikuchi, Tsukuba, Japan; Hitoshi Kitaguchi, Tsukuba, Japan; Yasuo Iijima, Tsukuba, Japan; and Kazuto Hirata, Tsukuba, Japan
Assignee: National Institute for Materials Science, Ibaraki, Japan
The present disclosure provides a copper-coated aluminum wire material including an aluminum wire material and a copper thin film coating the aluminum wire material that a space factor of the thin copper film is in the range of 0.2% to 4%.
High Fiber Density Cable with Flexible Optical Fiber Ribbons
US Patent 12411299
Published September 9, 2025
Inventors: Clint Nicholaus Anderson, West Columbia, SC, USA; Jeffrey Scott Barker, Stony Point, NC, USA; Brian G. Risch, Granite Falls, NC, USA; Ryan Truong, Hickory, NC, USA; Ben H. Wells, Columbia, SC, USA; Gavin Lin, Lexington, SC, USA; and Donald Ray Parris, Lexington, SC, USA
Assignee: Prysmian S.p.A., Milan, Italy
An exemplary optical cable includes a first type of ribbon bundles, a second type of ribbon bundles, a third type of ribbon bundles, a plurality of strength rods and an outer jacket. Each of the first, the second and third type of ribbon bundles includes a first, a second and a third flexible ribbon with corresponding optical fibers disposed within a ribbon bundle jacket. The first type of ribbon bundles is arranged in an interlocking pattern in a central region of the optical cable. The second type of ribbon bundles and the third type of ribbon bundles are disposed around the first type of ribbon bundles in a peripheral region of the optical cable. The outer jacket is disposed around the second and the third type of ribbon bundles, and the plurality of strength rods being at least partially embedded in the outer jacket, where the cumulative cross-sectional area of all of the strength rods in the cable divided by the cumulative cross-sectional area of all glass parts of the optical fibers in the cable is a first value less than 0.22, and where, at a temperature between −40°C and 0°C and at a wavelength of 1550 nm, the attenuation increase of the optical fibers in the cable relative to 25°C is below 0.15 dB/km.
Moisture Cureable Polymer for Flexible Cables
US Patent 12404392
Published September 2, 2025
Inventors: Kjell Fossum, Stenungsund, Sweden; Stefan Hellstrom, Stenungsund, Sweden; and Bernt-Ake Sultan, Stenungsund, Sweden
Assignee: Borealis AG, Vienna, Austria
The invention relates to the use of a polyethylene composition comprising one or more ethylene copolymer(s) wherein the ethylene copolymer is a terpolymer containing monomer units with polar groups and monomer units with hydrolysable silane groups, wherein the monomer units with polar groups are present in an amount of more than 5 mol. % based on the total polyethylene composition, and a silanol condensation catalyst in an amount of 0.0001 to 5 wt. %, based on the total polyethylene composition for improving the adhesion between a layer of a cable comprising the polyethylene composition and a polyurethane resin.
High Strength Wire
US Patent 12404632
Published September 2, 2025
Inventors: Jeremy E. Schaffer, Fort Wayne, IN, USA; Robert A. Mitchell, Huntington, IN, USA; and Andrew Kritsch, Fort Wayne, IN, USA
Assignee: Fort Wayne Metals Research Products, LLC, Fort Wayne, IN, USA
Ultra-High-Strength (UHS) wires are suited to high strength wire, strands, cables and rope applications including robotics force transmission and other high-performance mono- and multifilament wire applications. The wires exhibit high strength, low stretch and fatigue durability. Exemplary UHS materials include binary molybdenum-rhenium or tungsten-rhenium alloys with between 20 and 50 wt.% rhenium. These alloys are processed from a moderate strength (<2 GPa) warm-drawn rod to drawn monofilament wire with extreme nanocrystalline grain refinement, high apparent fatigue durability and ultimate strength levels exceeding 5 GPa in all cases, and up to 6.8 GPa at monofilament diameters ranging from 7 to 100 μm.
Passive Luminescent Cable
US Patent 12404979
Published September 2, 2025
Inventor: Lei Zong, Shanghai, China; Bingbing Wang, Shanghai, China; Dengkai Cao, Shanghai, China; Chunyan Lui, Shanghai, China; and Jingjing Ding, Shanghai, China
Assignee: Shanghai Lanhao Electric Co., Ltd., Shanghai, China
Provided is a passive luminescent cable. The passive luminescent cable includes a cable core and an outer sheath. The outer sheath is wrapped outside the cable core, and the cable core includes at least a power wire core, a ground wire core, an electromagnetic field energy collection wire core and a light strip. The electromagnetic field energy collection wire core includes a magnetic conducting wire core and multiple first conductor wires. Each first conductor wire is wound outside the magnetic conducting wire core to form a coil, and two ends of the first conductor wire are respectively connected to two electrodes of the light strip to form a loop. The outer sheath and a protective sleeve of the light strip are made of a light-transmitting material.
Capacitive Power Transmission Cable
US Patent 12400772
Published August 26, 2025
Inventors: Mansour Salehi-Moghadam, Kingston-Up-on-Thames, Endand; Gareth O’Brien, Ashbourne, Ireland; Dominic Quennell, London, England; and Ashkan Hajiloo, London, England
Assignee: Enertechnos Limited, Surrey, England
A capacitive power transmission cable, having at least two sets of conductive strands, the sets of strands being insulated from each other and in capacitive relationship, the one with the other: wherein the conductive strands are laid at least substantially in a multiples of six layer structure, with substantially equal numbers of strands of both sets; each layer has strands of one set alternating with strands of the other set; and the strands of the respective sets have different contrasting color.
Wire Rod for Cold Heading Having Excellent Delayed Fracture Resistance Characteristics, Parts and Manufacturing Method Therefor
US Patent 12392019
Published August 19, 2025
Inventor: Byung-In Jung, Pohang-si, South Korea
Assignee: Posco Co., Ltd., Pohang-si, South Korea
Provided are a wire rod for cold heading having high resistance to delayed facture, a part having high resistance to delayed facture, and methods for manufacturing the wire rod and the part. The wire rod of the present disclosure has a chemical composition including, by wt %, C: 0.3% to 0.5%, Si: 0.01% to 0.3%, Mn: 0.3% to 1.0%, Cr: 0.5% to 1.5%, Mo: 0.5% to 1.5%, Ni: 0.5% to 2.0%, V: 0.01% to 0.4%, and a balance of Fe and other impurities, and the chemical composition satisfies the relational expression 1, wherein the high-strength wire rod has a microstructure including, by area %, 5% to 20% martensite, 0.1% to 1% pearlite, and a balance of bainite.