{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11299448","patent":{"patent_number":"US-11299448","title":"Active ester compound","assignee":null,"inventors":[],"filing_date":"2018-04-10T00:00:00.000Z","publication_date":"2022-04-12T00:00:00.000Z","cpc_codes":["H01L","H01L"],"num_claims":9,"abstract":"An active ester compound that can form a cured product having excellent dielectric properties and copper foil adhesion properties is provided, a curable composition including the active ester compound is provided, and a cured product of the curable composition is provided. Also provided are a semiconductor encapsulating material, a printed wiring board, and a build-up film formed by using the curable composition. Specifically, an active ester compound is provided which includes a fluorinated hydrocarbon structural moiety and a plurality of aromatic ester structural moieties in the structure of the molecule and includes an aryloxycarbonyl structure or an arylcarbonyloxy structure at an end of the molecule, a curable composition including the active ester compound, and a cured product of the curable composition, and also provided are a semiconductor encapsulation material, a printed wiring board, and a build-up film formed by using the curable composition."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Active ester compound","description":"An active ester compound that can form a cured product having excellent dielectric properties and copper foil adhesion properties is provided, a curable composition including the active ester compound","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11299448","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-11299448","citation_suggestion":"Patentable. \"Active ester compound\" (US-11299448). https://patentable.app/patents/US-11299448","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11299448","json":"https://patentable.app/api/llm-context/US-11299448","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T19:46:36.553Z"}