{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8531891","patent":{"patent_number":"US-8531891","title":"Non-volatile semiconductor storage device","assignee":null,"inventors":[],"filing_date":"2012-01-10T00:00:00.000Z","publication_date":"2013-09-10T00:00:00.000Z","cpc_codes":["G11C","G11C","G11C"],"num_claims":13,"abstract":"For data erase from an electrically erasable and programmable non-volatile memory cell, the following operations are performed: an erase operation to apply an erase pulse voltage to a memory cell for data erase, an erase verify operation to verify whether data erase is completed, and a step-up operation to increase the erase pulse voltage by a certain step-up voltage if data erase is not completed. A control unit controls voltages so that at least a first erase pulse voltage initially generated in the erase operation has a longer rise time than that of a second erase pulse voltage generated subsequent to the first erase pulse voltage."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Non-volatile semiconductor storage device","description":"For data erase from an electrically erasable and programmable non-volatile memory cell, the following operations are performed: an erase operation to apply an erase pulse voltage to a memory cell for ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8531891","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-8531891","citation_suggestion":"Patentable. \"Non-volatile semiconductor storage device\" (US-8531891). https://patentable.app/patents/US-8531891","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8531891","json":"https://patentable.app/api/llm-context/US-8531891","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T13:17:19.416Z"}