{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11953479","patent":{"patent_number":"US-11953479","title":"Selective optical aqueous and non-aqueous detection of free sulfites","assignee":null,"inventors":[],"filing_date":"2018-10-05T00:00:00.000Z","publication_date":"2024-04-09T00:00:00.000Z","cpc_codes":["G01N","G01N","G01N"],"num_claims":20,"abstract":"4-pyrrolylpyridine, a novel anion sensor, displays a substantial color loss upon addition of sodium sulfite in aqueous solvents. A variety of anions were tested, including halides, phosphates, sulfates, and hydroxide, but all solutions remained unchanged aside from the sulfite, which displayed bleaching. Described here is a method for which the exact concentration of sulfites in a consumer product can be determined. The test is sensitive over a broad range of sulfites, from 0.84 ppm to over 10,000 ppm, and is accurate with a standard deviation of ±0.01 ppm."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Selective optical aqueous and non-aqueous detection of free sulfites","description":"4-pyrrolylpyridine, a novel anion sensor, displays a substantial color loss upon addition of sodium sulfite in aqueous solvents. A variety of anions were tested, including halides, phosphates, sulfate","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11953479","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-11953479","citation_suggestion":"Patentable. \"Selective optical aqueous and non-aqueous detection of free sulfites\" (US-11953479). https://patentable.app/patents/US-11953479","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11953479","json":"https://patentable.app/api/llm-context/US-11953479","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T15:11:47.059Z"}