{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11287906","patent":{"patent_number":"US-11287906","title":"Passive electromagnetic fountain pen","assignee":null,"inventors":[],"filing_date":"2018-10-18T00:00:00.000Z","publication_date":"2022-03-29T00:00:00.000Z","cpc_codes":["G06F"],"num_claims":16,"abstract":"Disclosed is a passive electromagnetic fountain pen, which includes a pen core and a pen body, wherein the pen body includes a first iron core and an iron core holder, a pen core clamp link, a second iron core, a third iron core, an elastic component, a pressure regulating plate, and a first structure matched with the pressure regulating plate are disposed sequentially from front to back in the iron core holder, coils are wound outside the first iron core and the second iron core, the first iron core is close to a pen tip of the pen core, the second iron core is fixedly connected with the iron core holder, the pen core is configured to pass through a center of the first iron core, and then be clamped by one end of the pen core clamp link."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Passive electromagnetic fountain pen","description":"Disclosed is a passive electromagnetic fountain pen, which includes a pen core and a pen body, wherein the pen body includes a first iron core and an iron core holder, a pen core clamp link, a second ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11287906","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-11287906","citation_suggestion":"Patentable. \"Passive electromagnetic fountain pen\" (US-11287906). https://patentable.app/patents/US-11287906","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11287906","json":"https://patentable.app/api/llm-context/US-11287906","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T14:07:39.625Z"}