{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10491187","patent":{"patent_number":"US-10491187","title":"Elastic wave device, multiplexer, high-frequency front-end circuit, and communication apparatus","assignee":null,"inventors":[],"filing_date":"2019-01-10T00:00:00.000Z","publication_date":"2019-11-26T00:00:00.000Z","cpc_codes":["H04B","H04B"],"num_claims":20,"abstract":"An elastic wave device includes a supporting substrate, a high-acoustic-velocity film disposed on the supporting substrate, a low-acoustic-velocity film disposed on the high-acoustic-velocity film, a piezoelectric layer disposed on the low-acoustic-velocity film, and an interdigital transducer electrode disposed on the piezoelectric layer. The acoustic velocity of a bulk wave that propagates through the high-acoustic-velocity film is higher than the acoustic velocity of an elastic wave that propagates through the piezoelectric layer. The acoustic velocity of a bulk wave that propagates through the low-acoustic-velocity film is lower than the acoustic velocity of an elastic wave that propagates through the piezoelectric layer. The high-acoustic-velocity film is composed of SiNx, where x<about 0.67."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Elastic wave device, multiplexer, high-frequency front-end circuit, and communication apparatus","description":"An elastic wave device includes a supporting substrate, a high-acoustic-velocity film disposed on the supporting substrate, a low-acoustic-velocity film disposed on the high-acoustic-velocity film, a ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10491187","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-10491187","citation_suggestion":"Patentable. \"Elastic wave device, multiplexer, high-frequency front-end circuit, and communication apparatus\" (US-10491187). https://patentable.app/patents/US-10491187","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10491187","json":"https://patentable.app/api/llm-context/US-10491187","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T14:11:17.885Z"}