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Expired European patentEurope

Process for the production of matted photographic registration materials

EP 0287809 B1 · Applicant: E.I. DU PONT DE NEMOURS AND COMPANY

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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 18, 1988 and granted September 21, 1994. A European patent lasts at most 20 years from filing, so its term ended March 18, 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 September 18, 2013.
  • 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 18, 1988
PublishedOctober 26, 1988
GrantedSeptember 21, 1994
Term endedMarch 18, 2008
Application numberEP 88104332
Classification (CPC)G03C1/7614

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedMarch 18, 1988PublishedOct 26, 1988Patent grantedSep 21, 1994Term endedMarch 18, 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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