{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9790575","patent":{"patent_number":"US-9790575","title":"Electric and electronic part copper alloy sheet with excellent bending workability and stress relaxation resistance","assignee":null,"inventors":[],"filing_date":"2015-10-19T00:00:00.000Z","publication_date":"2017-10-17T00:00:00.000Z","cpc_codes":["H01L"],"num_claims":15,"abstract":"An electric and electronic part copper alloy sheet with excellent bending workability and stress relaxation resistance is made from a copper alloy containing 1.5 to 4.0 percent by mass of Ni, Si satisfying a Ni/Si mass ratio of 4.0 to 5.0, 0.01 to 1.3 percent by mass of Sn, and the remainder composed of copper and incidental impurities, wherein the average crystal grain size is 5 to 20 μm, the standard deviation of the crystal grain size satisfies 2σ<10 μm, and the proportion of the number of particles having a particle diameter of 90 to 300 nm in Ni—Si dispersed particles having a particle diameter of 30 to 300 nm is 20% or more, where the particles are observed in a cross-section defined by a direction perpendicular to a sheet surface and a direction parallel to a rolling direction."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Electric and electronic part copper alloy sheet with excellent bending workability and stress relaxation resistance","description":"An electric and electronic part copper alloy sheet with excellent bending workability and stress relaxation resistance is made from a copper alloy containing 1.5 to 4.0 percent by mass of Ni, Si satis","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9790575","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-9790575","citation_suggestion":"Patentable. \"Electric and electronic part copper alloy sheet with excellent bending workability and stress relaxation resistance\" (US-9790575). https://patentable.app/patents/US-9790575","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9790575","json":"https://patentable.app/api/llm-context/US-9790575","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:46:00.993Z"}