{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8541852","patent":{"patent_number":"US-8541852","title":"Acoustic sensor","assignee":null,"inventors":[],"filing_date":"2011-05-12T00:00:00.000Z","publication_date":"2013-09-24T00:00:00.000Z","cpc_codes":["H04R","H04R","H04R"],"num_claims":7,"abstract":"A diaphragm for sensing sound pressure faces a back plate including a plate portion and a fixed electrode film to form a capacitance type acoustic sensor. The back plate is opened with acoustic holes for passing vibration, and is arranged with a plurality of stoppers in a projecting manner on a surface facing the diaphragm. The stopper arranged in an outer peripheral area of the back plate has a small diameter, and the stopper arranged in an internal area has a large diameter. Thus, sticking of the diaphragm is prevented, and the diaphragm is less likely to break by impact when the sensor is dropped."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Acoustic sensor","description":"A diaphragm for sensing sound pressure faces a back plate including a plate portion and a fixed electrode film to form a capacitance type acoustic sensor. The back plate is opened with acoustic holes ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8541852","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-8541852","citation_suggestion":"Patentable. \"Acoustic sensor\" (US-8541852). https://patentable.app/patents/US-8541852","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8541852","json":"https://patentable.app/api/llm-context/US-8541852","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T05:38:11.654Z"}