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Expired European patentEurope

Manufacture of diethylaminoethyl dextrans

EP 0195151 B1 · Applicant: POLYDEX PHARMACEUTICALS LIMITED

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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 22, 1985 and granted January 25, 1989. A European patent lasts at most 20 years from filing, so its term ended March 22, 2005.
  • 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 September 22, 2010.
  • 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 22, 1985
PublishedSeptember 24, 1986
GrantedJanuary 25, 1989
Term endedMarch 22, 2005
Application numberEP 85301986
Classification (CPC)C08B37/0021

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedMarch 22, 1985PublishedSep 24, 1986Patent grantedJan 25, 1989Term endedMarch 22, 2005

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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