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Expired European patentEurope

Preparation of hydrophilic polyolefin fibres and paper containing these fibres

EP 0014534 B1 · Applicant: HERCULES INCORPORATED

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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 January 22, 1980 and granted September 25, 1985. A European patent lasts at most 20 years from filing, so its term ended January 22, 2000.
  • 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 July 22, 2005.
  • 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.
FiledJanuary 22, 1980
PublishedAugust 20, 1980
GrantedSeptember 25, 1985
Term endedJanuary 22, 2000
Application numberEP 80300200
Classification (CPC)D06M13/184 +2 more

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedJan 22, 1980PublishedAug 20, 1980Patent grantedSep 25, 1985Term endedJan 22, 2000

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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