{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9721604","patent":{"patent_number":"US-9721604","title":"Perpendicular magnetic recording (PMR) write head with improved shapes of side shield and main pole","assignee":null,"inventors":[],"filing_date":"2016-07-28T00:00:00.000Z","publication_date":"2017-08-01T00:00:00.000Z","cpc_codes":["G11B","G11B","G11B","G11B","G11B"],"num_claims":10,"abstract":"A perpendicular magnetic recording writer is disclosed with a side shield separated from a write pole side by a gap layer at an air bearing surface (ABS) where the side shield has a first sidewall facing the write pole with an end at height (h1) from the ABS, and a second sidewall at height h1 that is parallel to the ABS. The write pole side is curved such that a first portion proximate to the ABS is at an angle of 0 to 40 degrees with respect to a center plane formed orthogonal to the ABS, and a second section proximate to a corner where the curved side connects with a flared main pole side is formed substantially parallel to the second sidewall. When h1 is 30-80 nm, and the corner is 80-150 nm from the ABS, overwrite is improved while cross-track field gradient is enhanced."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Perpendicular magnetic recording (PMR) write head with improved shapes of side shield and main pole","description":"A perpendicular magnetic recording writer is disclosed with a side shield separated from a write pole side by a gap layer at an air bearing surface (ABS) where the side shield has a first sidewall fac","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9721604","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-9721604","citation_suggestion":"Patentable. \"Perpendicular magnetic recording (PMR) write head with improved shapes of side shield and main pole\" (US-9721604). https://patentable.app/patents/US-9721604","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9721604","json":"https://patentable.app/api/llm-context/US-9721604","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T08:04:06.598Z"}