{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10502681","patent":{"patent_number":"US-10502681","title":"Apparatus and method for measuring concentration of pollutants in water","assignee":null,"inventors":[],"filing_date":"2019-03-14T00:00:00.000Z","publication_date":"2019-12-10T00:00:00.000Z","cpc_codes":["G01N","G01N","G01N","G02F","G01N","G01N"],"num_claims":6,"abstract":"The present disclosure provides an apparatus and a method for measuring a concentration of pollutants in water. A passive Q-switched fiber laser outputs an evanescent wave to a to-be-tested water sample after emitting a Q-switched pulse laser signal and transmitting it via an evanescent field fiber, and based on an evanescent wave change caused by an absorption effect of the pollutants in the to-be-tested water sample to the evanescent wave and an output repetition frequency change of the passive Q-switched fiber laser due to the evanescent wave change, outputs an output repetition frequency result of the passive Q-switched fiber laser. The method is simple; and the apparatus based on the method is simple in structure and low in cost."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Apparatus and method for measuring concentration of pollutants in water","description":"The present disclosure provides an apparatus and a method for measuring a concentration of pollutants in water. A passive Q-switched fiber laser outputs an evanescent wave to a to-be-tested water samp","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10502681","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-10502681","citation_suggestion":"Patentable. \"Apparatus and method for measuring concentration of pollutants in water\" (US-10502681). https://patentable.app/patents/US-10502681","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10502681","json":"https://patentable.app/api/llm-context/US-10502681","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T06:34:43.585Z"}