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Expired European patentEurope

Automatic control system for water heaters

EP 0196850 B1 · Applicant: Boals, Wayne S.

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Filed March 24, 1986 and granted October 24, 1990. A European patent lasts at most 20 years from filing, so its term ended March 24, 2006.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by September 24, 2011.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledMarch 24, 1986
PublishedOctober 8, 1986
GrantedOctober 24, 1990
Term endedMarch 24, 2006
Application numberEP 86302150
Classification (CPC)F16K17/38 +2 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedMarch 24, 1986PublishedOct 8, 1986Patent grantedOct 24, 1990Term endedMarch 24, 2006

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.