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Expired European patentEurope

Method and device for the elution of a granular material

EP 0403669 B1 · Applicant: POSSEHL KIES + HAFEN + UMWELTSCHUTZ 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 June 17, 1989 and granted March 24, 1993. A European patent lasts at most 20 years from filing, so its term ended June 17, 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 December 17, 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.
FiledJune 17, 1989
PublishedDecember 27, 1990
GrantedMarch 24, 1993
Term endedJune 17, 2009
Application numberEP 89111032
Classification (CPC)B01D11/02 +1 more

Timeline

Timeline From EPO dates

1990199219941996199820002002200420062008Application filedJune 17, 1989PublishedDec 27, 1990Patent grantedMarch 24, 1993Term endedJune 17, 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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