{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11965856","patent":{"patent_number":"US-11965856","title":"Method and device for detecting metal residue in electric-resistance-welded steel pipe","assignee":null,"inventors":[],"filing_date":"2018-09-27T00:00:00.000Z","publication_date":"2024-04-23T00:00:00.000Z","cpc_codes":["G01N","G01N"],"num_claims":22,"abstract":"A method for detecting a metal residue present in an electric-resistance-welded steel pipe includes a first step of inserting the electric-resistance-welded steel pipe into an exciting coil while relatively moving the electric-resistance-welded steel pipe in a longitudinal direction and magnetizing the electric-resistance-welded steel pipe using a direct current at a field intensity capable of magnetizing the electric-resistance-welded steel pipe and the metal residue up to a magnetic saturation state by the exciting coil and a second step of inserting the electric-resistance-welded steel pipe into a detecting coil while relatively moving the electric-resistance-welded steel pipe in the longitudinal direction, detecting an induced electromotive force generated in the detecting coil by a change in a magnetic flux caused by the direct-current magnetization by the exciting coil in the first step as an output signal of the detecting coil, and detecting the metal residue present in the electric-resistance-welded steel pipe on the basis of the output signal of the detecting coil."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and device for detecting metal residue in electric-resistance-welded steel pipe","description":"A method for detecting a metal residue present in an electric-resistance-welded steel pipe includes a first step of inserting the electric-resistance-welded steel pipe into an exciting coil while rela","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11965856","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-11965856","citation_suggestion":"Patentable. \"Method and device for detecting metal residue in electric-resistance-welded steel pipe\" (US-11965856). https://patentable.app/patents/US-11965856","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11965856","json":"https://patentable.app/api/llm-context/US-11965856","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T08:35:28.155Z"}