{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8502973","patent":{"patent_number":"US-8502973","title":"Optical emission analyzer","assignee":null,"inventors":[],"filing_date":"2007-09-04T00:00:00.000Z","publication_date":"2013-08-06T00:00:00.000Z","cpc_codes":["G01N"],"num_claims":8,"abstract":"An optical emission analyzer is provided with a circuit-closing switch (56) for changing the state of an arc-generating circuit 5 between the closed state and the open state and a reverse-blocking diode (55) for preventing a spark current from flowing into the circuit-closing switch (56). The circuit-closing switch (56) is turned on before the beginning of a spark discharge between a discharge electrode (31) and a sample (32) to initiate excitation of a coil (53). Consequently, the excitation current of the coil (53) can be increased to a target value within the duration of the spark discharge without using a low-inductance coil or increasing the switching frequency of a switching element (52)."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Optical emission analyzer","description":"An optical emission analyzer is provided with a circuit-closing switch (56) for changing the state of an arc-generating circuit 5 between the closed state and the open state and a reverse-blocking dio","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8502973","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-8502973","citation_suggestion":"Patentable. \"Optical emission analyzer\" (US-8502973). https://patentable.app/patents/US-8502973","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8502973","json":"https://patentable.app/api/llm-context/US-8502973","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T20:32:34.906Z"}