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Expired European patentEurope

Method of binding biological catalytic activities to sintered expanded clays and product obtained therefrom

EP 0462082 B1 · Applicant: CONSIGLIO NAZIONALE DELLE RICERCHE

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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 June 11, 1991 and granted April 2, 1997. A European patent lasts at most 20 years from filing, so its term ended June 11, 2011.
  • 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 December 11, 2016.
  • 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.
FiledJune 11, 1991
PublishedDecember 18, 1991
GrantedApril 2, 1997
Term endedJune 11, 2011
Application numberEP 91830258
Classification (CPC)C02F3/342 +2 more

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedJune 11, 1991PublishedDec 18, 1991Patent grantedApril 2, 1997Term endedJune 11, 2011

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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