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Expired European patentEurope

Process for surface-grafting of formed materials, in particular also microporous membranes made from nitrogen containing polymers

EP 0490950 B1 · Applicant: SARTORIUS AG

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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 September 6, 1990 and granted April 28, 1993. A European patent lasts at most 20 years from filing, so its term ended September 6, 2010.
  • 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 6, 2016.
  • 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 6, 1990
PublishedJune 24, 1992
GrantedApril 28, 1993
Term endedSeptember 6, 2010
Application numberEP 90913482
Classification (CPC)C08J7/12 +2 more

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedSep 6, 1990PublishedJune 24, 1992Patent grantedApril 28, 1993Term endedSep 6, 2010

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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