# US 9,040,827 B2 · LAN cable > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,040,827 B2 - Document ID: US9040827B2 - Status: Granted - Kind: B2 - Application number: 13/733,776 - Filed: 2013-01-03 - Published: 2013-07-18 - Granted: 2015-05-26 - Earliest claimed: 2012-01-13 - Assignees: Hitachi Metals, Ltd. - Applicants: Hitachi Cable, Ltd. - Inventors: Shinji Hinoshita - Web page: https://patentgrep.com/patent/US9040827B2 ## CPC - H01B 11/002: {Pair constructions} - H05K 9/0098: {for shielding electrical cables} - H01B 11/06: with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A LAN cable includes an unshielded LAN cable including one or plural pairs of pair twisted wires and a sheath formed collectively covering a periphery of the pair twisted wires. The sheath includes a resin including nickel hydroxide at a mixing mass ratio of not less than 25% and not more than 60%. ## Claims ### Claim 1 A LAN cable, comprising: an unshielded LAN cable comprising one or plural pairs of pair twisted wires and a sheath formed collectively covering a periphery of the pair twisted wires, wherein the sheath comprises a resin comprising nickel hydroxide at a mixing mass ratio of not less than 25% and not more than 60%, wherein the nickel hydroxide is compounded into the sheath to prevent an alien crosstalk. ### Claim 2 (depends on 1) The LAN cable according to claim 1, wherein the sheath has a relative magnetic permeability of not less than 5 in a used frequency band. ### Claim 3 (depends on 1) The LAN cable according to claim 1, wherein the sheath has an oxygen index of not less than 21. ### Claim 4 (depends on 1) The LAN cable according to claim 1, wherein the sheath further comprises at least one of magnesium hydroxide and aluminum hydroxide, and wherein the sheath has an oxygen index of not less than 25. ### Claim 5 (depends on 1) The LAN cable according to claim 1, wherein the sheath includes a projection on an inner periphery thereof so as to form an air layer between the pair twisted wires and the sheath. ### Claim 6 (depends on 1) The LAN cable according to claim 1, further comprising an interposition disposed inside the sheath to secure a separation distance between the plural pairs of pair twisted wires. ### Claim 7 (depends on 6) The LAN cable according to claim 6, wherein the interposition is cross-shaped in a cross section thereof. ### Claim 8 An unshielded LAN cable, comprising: one or more pairs of twisted pair wires; and a polymer sheath provided so as to cover a circumference of the one or more pairs of twisted pair wires together, wherein the polymer sheath containing nickel hydroxide has a relative permeability in a 1 to 900 MHz frequency band of at least 5 or higher, wherein nickel hydroxide is compounded into the sheath to prevent an alien crosstalk. ### Claim 9 (depends on 8) The unshielded LAN cable according to claim 8, wherein the polymer sheath comprises a resin comprising nickel hydroxide at a mixing mass ratio of not less than 25% and not more than 60%. ### Claim 10 (depends on 9) The unshielded LAN cable according to claim 9, wherein the polymer sheath further comprises aluminum hydroxide. ### Claim 11 (depends on 10) The unshielded LAN cable according to claim 10, wherein the aluminum hydroxide is compounded into the polymer sheath to prevent an alien crosstalk. ### Claim 12 (depends on 8) The unshielded LAN cable according to claim 8, wherein the polymer sheath comprises a polyolefin resin. ### Claim 13 (depends on 12) The unshielded LAN cable according to claim 12, wherein the polyolefin resin comprises a mixture of polyolefin and nickel hydroxide. ### Claim 14 (depends on 13) The unshielded LAN cable according to claim 13, wherein a mixing mass ratio of the nickel hydroxide in the polyolefin resin is in a range from 25% to 60%. ### Claim 15 (depends on 12) The unshielded LAN cable according to claim 12, wherein the polyolefin resin comprises an ethylene-ethyl acrylate copolymer (EEA) resin. ### Claim 16 (depends on 8) The unshielded LAN cable according to claim 8, wherein the polymer sheath has an oxygen index of at least 21. ### Claim 17 (depends on 1) The LAN cable according to claim 1, wherein the sheath comprises a polymer sheet with a relative permeability in a 1-to-500 MHz frequency band of at least 5. ### Claim 18 (depends on 1) The LAN cable according to claim 1, wherein the sheath further comprises aluminum hydroxide. ### Claim 19 (depends on 1) The LAN cable according to claim 1, wherein the resin comprises a polyolefin resin comprising an ethylene-ethyl acrylate copolymer (EEA) resin.