{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9778007","patent":{"patent_number":"US-9778007","title":"Matching a spent firearm cartridge","assignee":null,"inventors":[],"filing_date":"2016-06-20T00:00:00.000Z","publication_date":"2017-10-03T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","G06V","G06V"],"num_claims":21,"abstract":"Disclosed is a novel system, and method for matching a spent firearm cartridge. The method starts with applying a directed self-assembly (DSA) process to produce a nano-scale pattern on a tip of a firing pin for a firearm. The DSA process including: a) disposing a neutral substrate on the firing pin; b) lithographically placing two or more base polymer chains on the neutral substrate, at least two of the two or more base polymer chains being different lengths, so that the two or more base polymer chains align end-to-end in an alternating structure, and c) extracting at least one of the two or more base polymer chains leaving at least one of the base polymer chains remaining thereby forming a randomly oriented pattern. Next, the randomly oriented pattern is used as blocking mask to form a randomly oriented metallization pattern."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Matching a spent firearm cartridge","description":"Disclosed is a novel system, and method for matching a spent firearm cartridge. The method starts with applying a directed self-assembly (DSA) process to produce a nano-scale pattern on a tip of a fir","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9778007","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-9778007","citation_suggestion":"Patentable. \"Matching a spent firearm cartridge\" (US-9778007). https://patentable.app/patents/US-9778007","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9778007","json":"https://patentable.app/api/llm-context/US-9778007","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:45:28.124Z"}