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Expired European patentEurope

Modified polyester fiber and process for producing the same

EP 1493853 B1 · Applicant: DAIREN CHEMICAL CORPORATION

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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 July 4, 2003 and granted December 16, 2009. A European patent lasts at most 20 years from filing, so its term ended July 4, 2023.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledJuly 4, 2003
PublishedJanuary 5, 2005
GrantedDecember 16, 2009
Term endedJuly 4, 2023
Application numberEP 03015222
Classification (CPC)D01F6/86

Timeline

Timeline From EPO dates

2004200620082010201220142016201820202022Application filedJuly 4, 2003PublishedJan 5, 2005Patent grantedDec 16, 2009Term endedJuly 4, 2023

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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