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Expired European patentEurope

Continuous filtration device

EP 0539554 B1 · Applicant: PROCESS FILTRATION AND LIQUID EQUIPMENT

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Overview

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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 15, 1992 and granted July 5, 1995. A European patent lasts at most 20 years from filing, so its term ended May 15, 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 November 15, 2017.
  • 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 15, 1992
PublishedMay 5, 1993
GrantedJuly 5, 1995
Term endedMay 15, 2012
Application numberEP 92909924
Classification (CPC)B01D33/19

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedMay 15, 1992PublishedMay 5, 1993Patent grantedJuly 5, 1995Term endedMay 15, 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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.