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Expired European patentEurope

Device for the production of a concrete layer divided in single panels

EP 0338242 B1 · Applicant: F. KIRCHHOFF 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 March 11, 1989 and granted May 29, 1991. A European patent lasts at most 20 years from filing, so its term ended March 11, 2009.
  • 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 11, 2014.
  • 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 11, 1989
PublishedOctober 25, 1989
GrantedMay 29, 1991
Term endedMarch 11, 2009
Application numberEP 89104370
Classification (CPC)E01C23/026

Timeline

Timeline From EPO dates

1990199219941996199820002002200420062008Application filedMarch 11, 1989PublishedOct 25, 1989Patent grantedMay 29, 1991Term endedMarch 11, 2009

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

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