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Expired European patentEurope

System for heated air extraction of contaminants from a soil stack

EP 0562095 B1 · Applicant: IKENBERRY, Dwight S.

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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 September 25, 1992 and granted August 9, 1995. A European patent lasts at most 20 years from filing, so its term ended September 25, 2012.
  • 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 March 25, 2018.
  • 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.
FiledSeptember 25, 1992
PublishedSeptember 29, 1993
GrantedAugust 9, 1995
Term endedSeptember 25, 2012
Application numberEP 92922104
Classification (CPC)B09C1/06

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedSep 25, 1992PublishedSep 29, 1993Patent grantedAug 9, 1995Term endedSep 25, 2012

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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