{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9677998","patent":{"patent_number":"US-9677998","title":"Control over etching molecule levels in etching compositions","assignee":null,"inventors":[],"filing_date":"2014-12-18T00:00:00.000Z","publication_date":"2017-06-13T00:00:00.000Z","cpc_codes":["G01N","G01N","G01N"],"num_claims":20,"abstract":"A method of detecting and measuring the presence of ammonium fluoride in a buffered oxide etchant (“BOE”) composition is provided. The method comprises contacting a BOE composition with a chromogenic agent selected from bromothymol blue, Eosin-Bluish, indophenol blue, bromocresol green, orthophthaldialdehyde, tetraphenylprophyrin, acridine orange, naphthalene-2,3-dicarboxaldehyde, 2-mercaptoethanol, n-acetylcysteine, luminal, bromocresol purple, or bromophenol blue and at least one of sodium hydroxide, ammonium nitrate, ammonium chloride, tartaric acid, octylphenoxypolyethoxyethanol, Triton X-100, borate buffer, sodium chloride, sodium tetra borate decahydrate, sodium sulfite, and Brij35 to form a treated BOE composition, the treated BOE composition having spectroscopic properties resulting from the contacting that correlate with the amount of ammonium fluoride in the treated BOE composition, performing a spectrometric measurement of the spectroscopic properties of the treated BOE composition, and comparing the spectrometric measurement to pre-determined values to identify the amount of ammonium fluoride in the BOE composition."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Control over etching molecule levels in etching compositions","description":"A method of detecting and measuring the presence of ammonium fluoride in a buffered oxide etchant (“BOE”) composition is provided. The method comprises contacting a BOE composition with a chromogenic ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9677998","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-9677998","citation_suggestion":"Patentable. \"Control over etching molecule levels in etching compositions\" (US-9677998). https://patentable.app/patents/US-9677998","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9677998","json":"https://patentable.app/api/llm-context/US-9677998","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T04:08:46.423Z"}