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Expired European patentEurope

Method of separating and/or purifying bio-affecting substances using particulate, polymeric adsorbents

EP 0248524 B1 · Applicant: ROHM AND HAAS COMPANY

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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 April 27, 1987 and granted May 13, 1992. A European patent lasts at most 20 years from filing, so its term ended April 27, 2007.
  • 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 October 27, 2012.
  • 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.
FiledApril 27, 1987
PublishedDecember 9, 1987
GrantedMay 13, 1992
Term endedApril 27, 2007
Application numberEP 87303691
Classification (CPC)B01D15/02 +2 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedApril 27, 1987PublishedDec 9, 1987Patent grantedMay 13, 1992Term endedApril 27, 2007

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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