{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11297412","patent":{"patent_number":"US-11297412","title":"Miniature moving coil loudspeaker with ferrofluid","assignee":null,"inventors":[],"filing_date":"2020-02-24T00:00:00.000Z","publication_date":"2022-04-05T00:00:00.000Z","cpc_codes":["H04R","H04R","H04R","H04R","H04R","H04R","H04R","H04R"],"num_claims":20,"abstract":"Various implementations include loudspeaker drivers. In some aspects, an electro-acoustic driver includes: a cup section; a core section at least partially housed in the cup section, the core section including: a primary magnet; and a coin adjacent to the primary magnet; a bobbin surrounding the core section between the cup section and the core section, where the bobbin and the core section define an inner magnetic gap; a coil surrounding the bobbin and a portion of the core section; and a ferrofluid located at the inner magnetic gap, where the driver has an outer diameter less than or equal to approximately 10 millimeters."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Miniature moving coil loudspeaker with ferrofluid","description":"Various implementations include loudspeaker drivers. In some aspects, an electro-acoustic driver includes: a cup section; a core section at least partially housed in the cup section, the core section ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11297412","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-11297412","citation_suggestion":"Patentable. \"Miniature moving coil loudspeaker with ferrofluid\" (US-11297412). https://patentable.app/patents/US-11297412","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11297412","json":"https://patentable.app/api/llm-context/US-11297412","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T22:31:06.867Z"}