{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8531671","patent":{"patent_number":"US-8531671","title":"Apparatus and methods for determining the concentration of black carbon particles in a combustion exhaust","assignee":null,"inventors":[],"filing_date":"2010-12-03T00:00:00.000Z","publication_date":"2013-09-10T00:00:00.000Z","cpc_codes":["G01N","G01N","G01N","G01N","G01N","G01N"],"num_claims":27,"abstract":"Apparatus and methods are described for determining particulate concentrations in an exhaust gas. One embodiment provides a method of analyzing particles in a gas using an apparatus including a probe and an analyzer. The method includes obtaining a sample of particle laden gas through the probe; obtaining ambient air through the probe; diluting the sample with the ambient air; and providing the diluted sample to the analyzer. Another embodiment provides an apparatus for analyzing particles in a gas. The apparatus includes a probe adapted to accept a gas or ambient air; a volume to dilute the gas with the ambient air; an analyzer responsive to particles in the gas; and electronics to operate the apparatus. The electronics instructs a user to first provide a sample and then provide ambient air into the volume, and then analyzes substantially all of the sample and ambient air for particles."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Apparatus and methods for determining the concentration of black carbon particles in a combustion exhaust","description":"Apparatus and methods are described for determining particulate concentrations in an exhaust gas. One embodiment provides a method of analyzing particles in a gas using an apparatus including a probe ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8531671","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-8531671","citation_suggestion":"Patentable. \"Apparatus and methods for determining the concentration of black carbon particles in a combustion exhaust\" (US-8531671). https://patentable.app/patents/US-8531671","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8531671","json":"https://patentable.app/api/llm-context/US-8531671","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T04:10:53.359Z"}