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Expired European patentEurope

Process for recycling waste materials

EP 0321807 B1 · Applicant: Asea Brown Boveri Aktiengesellschaft

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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 December 10, 1988 and granted April 8, 1992. A European patent lasts at most 20 years from filing, so its term ended December 10, 2008.
  • 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 June 10, 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.
FiledDecember 10, 1988
PublishedJune 28, 1989
GrantedApril 8, 1992
Term endedDecember 10, 2008
Application numberEP 88120665
Classification (CPC)C10G1/002

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedDec 10, 1988PublishedJune 28, 1989Patent grantedApril 8, 1992Term endedDec 10, 2008

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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