{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9658377","patent":{"patent_number":"US-9658377","title":"Phase difference film layered body and method for producing the same having micrometer-scale particles in a subsequently-removed layer","assignee":null,"inventors":[],"filing_date":"2011-12-20T00:00:00.000Z","publication_date":"2017-05-23T00:00:00.000Z","cpc_codes":["G02F","G02F","G02F","G02F","G02F","G02F","G02F"],"num_claims":14,"abstract":"By provision of an A layer consisting of a resin having a positive intrinsic birefringence value; a B layer consisting of a resin containing a styrene polymer and having a negative intrinsic birefringence value; and a C layer consisting of a resin containing a polymer having an alicyclic structure, in this order; a phase difference film wherein, when the C layer is removed, retardation Re at an incident angle of 0° and retardation R40 at an incident angle of 40° satisfy a relationship of 0.92≦R40/Re≦1.08 is realized."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Phase difference film layered body and method for producing the same having micrometer-scale particles in a subsequently-removed layer","description":"By provision of an A layer consisting of a resin having a positive intrinsic birefringence value; a B layer consisting of a resin containing a styrene polymer and having a negative intrinsic birefring","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9658377","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-9658377","citation_suggestion":"Patentable. \"Phase difference film layered body and method for producing the same having micrometer-scale particles in a subsequently-removed layer\" (US-9658377). https://patentable.app/patents/US-9658377","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9658377","json":"https://patentable.app/api/llm-context/US-9658377","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T08:20:29.698Z"}