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Expired European patentEurope

Apparatus for and method of water heating by an intermittent adsorption process

EP 0203558 B1 · Applicant: ZEO-TECH Zeolith Technologie GmbH

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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 26, 1986 and granted October 9, 1991. A European patent lasts at most 20 years from filing, so its term ended May 26, 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 November 26, 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.
FiledMay 26, 1986
PublishedDecember 3, 1986
GrantedOctober 9, 1991
Term endedMay 26, 2006
Application numberEP 86107129
Classification (CPC)F25B17/08

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedMay 26, 1986PublishedDec 3, 1986Patent grantedOct 9, 1991Term endedMay 26, 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

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