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Expired European patentEurope

Polyamide powder made of particles with a "sand rose" structure, and process for its preparation

EP 0303530 B1 · Applicant: ELF ATOCHEM S.A.

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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 August 1, 1988 and granted October 18, 1995. A European patent lasts at most 20 years from filing, so its term ended August 1, 2008.
  • 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 February 1, 2014.
  • 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.
FiledAugust 1, 1988
PublishedFebruary 15, 1989
GrantedOctober 18, 1995
Term endedAugust 1, 2008
Application numberEP 88402002
Classification (CPC)A61K47/34 +2 more

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedAug 1, 1988PublishedFeb 15, 1989Patent grantedOct 18, 1995Term endedAug 1, 2008

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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