{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9668358","patent":{"patent_number":"US-9668358","title":"Cu ball","assignee":null,"inventors":[],"filing_date":"2012-12-06T00:00:00.000Z","publication_date":"2017-05-30T00:00:00.000Z","cpc_codes":["H01L","H01L","H01L"],"num_claims":13,"abstract":"A Cu ball that has low α dose and high sphericity even when containing at least a certain amount of impurity elements other than Cu. Even when the purity thereof is 99.995% or less and U and Th contents are 5 ppb or less in order to suppress any software errors and decrease connection failure, α dose is 0.0200 cph/cm2 or less. Further, the sphericity of the Cu ball is unexpectedly improved by making the purity not more than 99.995%."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Cu ball","description":"A Cu ball that has low α dose and high sphericity even when containing at least a certain amount of impurity elements other than Cu. Even when the purity thereof is 99.995% or less and U and Th conten","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9668358","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-9668358","citation_suggestion":"Patentable. \"Cu ball\" (US-9668358). https://patentable.app/patents/US-9668358","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9668358","json":"https://patentable.app/api/llm-context/US-9668358","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T13:35:57.354Z"}