{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8483399","patent":{"patent_number":"US-8483399","title":"Condenser microphone, microphone unit, and blood pressure gauge","assignee":null,"inventors":[],"filing_date":"2007-10-16T00:00:00.000Z","publication_date":"2013-07-09T00:00:00.000Z","cpc_codes":["H04R"],"num_claims":13,"abstract":"The present invention provides a condenser microphone capable of detecting small sounds (e.g., Korotkoff sounds) with high sensitivity even in environments with variations in pressure, such as cuff pressure. A condenser microphone (10) is disposed as an acoustic sensor for detecting Korotkoff sounds in a communication space reachable by the internal pressure of the cuff of a blood pressure gauge. In the condenser microphone, a diaphragm (13) and a backplate 14) are disposed in the interior of a housing (11), an aeration hole (30) is formed in a wall (11B) that blocks off the housing back surface, and a sound-absorbing element (20) having sound absorption characteristics with respect to a frequency band targeted for detection is disposed on the front surface of a housing (11)."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Condenser microphone, microphone unit, and blood pressure gauge","description":"The present invention provides a condenser microphone capable of detecting small sounds (e.g., Korotkoff sounds) with high sensitivity even in environments with variations in pressure, such as cuff pr","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8483399","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-8483399","citation_suggestion":"Patentable. \"Condenser microphone, microphone unit, and blood pressure gauge\" (US-8483399). https://patentable.app/patents/US-8483399","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8483399","json":"https://patentable.app/api/llm-context/US-8483399","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T06:57:56.303Z"}