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Expired European patentEurope

Self-regulating hydrant

EP 0143835 B1 · Applicant: RATNIK INDUSTRIES, INCORPORATED

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Overview

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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 May 14, 1984 and granted January 4, 1989. A European patent lasts at most 20 years from filing, so its term ended May 14, 2004.
  • 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 November 14, 2009.
  • 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.
FiledMay 14, 1984
PublishedJune 12, 1985
GrantedJanuary 4, 1989
Term endedMay 14, 2004
Application numberEP 84902176
Classification (CPC)F25C3/04

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedMay 14, 1984PublishedJune 12, 1985Patent grantedJan 4, 1989Term endedMay 14, 2004

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.