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Expired European patentEurope

Concrete for road surfaces and process for preparation thereof

EP 0628522 B1 · Applicant: Gebr. von der Wettern 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 19, 1994 and granted April 23, 1997. A European patent lasts at most 20 years from filing, so its term ended May 19, 2014.
  • 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 19, 2019.
  • 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 19, 1994
PublishedDecember 14, 1994
GrantedApril 23, 1997
Term endedMay 19, 2014
Application numberEP 94107748
Classification (CPC)C04B28/02 +2 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedMay 19, 1994PublishedDec 14, 1994Patent grantedApril 23, 1997Term endedMay 19, 2014

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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