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Expired European patentEurope

Macroporous support having a porosity gradient and method for its production

EP 0870534 B1 · Applicant: SOCIETE DES CERAMIQUES TECHNIQUES

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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 March 31, 1998 and granted February 21, 2001. A European patent lasts at most 20 years from filing, so its term ended March 31, 2018.
  • 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 1, 2023.
  • 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.
FiledMarch 31, 1998
PublishedOctober 14, 1998
GrantedFebruary 21, 2001
Term endedMarch 31, 2018
Application numberEP 98400756
Classification (CPC)B01D69/107 +1 more

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedMarch 31, 1998PublishedOct 14, 1998Patent grantedFeb 21, 2001Term endedMarch 31, 2018

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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