{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9803887","patent":{"patent_number":"US-9803887","title":"Cathodic corrosion and dry fire protection apparatus and methods for electric water heaters","assignee":null,"inventors":[],"filing_date":"2014-06-16T00:00:00.000Z","publication_date":"2017-10-31T00:00:00.000Z","cpc_codes":["G01N","G05B"],"num_claims":14,"abstract":"The metal tank portion of an electric water heater is protected against corrosion utilizing a corrosion protection system that detects a voltage potential between the sheath portion of a tank water-immersed electric heating element and the tank. In one embodiment of the corrosion protection system the sensed sheath/tank potential is utilized to enable a user of the water heater to accurately gauge the necessity of replacing a sacrificial anode extending into the tank. In another corrosion protection system, the sensed sheath/tank potential is utilized to provide impressed current cathodic protection of the tank and also to prevent dry firing of the electric water heater."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Cathodic corrosion and dry fire protection apparatus and methods for electric water heaters","description":"The metal tank portion of an electric water heater is protected against corrosion utilizing a corrosion protection system that detects a voltage potential between the sheath portion of a tank water-im","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9803887","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-9803887","citation_suggestion":"Patentable. \"Cathodic corrosion and dry fire protection apparatus and methods for electric water heaters\" (US-9803887). https://patentable.app/patents/US-9803887","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9803887","json":"https://patentable.app/api/llm-context/US-9803887","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:01:59.068Z"}