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Expired European patentEurope

Stabilized red phosphorus and method for production thereof

EP 0283759 B1 · Applicant: HOECHST AKTIENGESELLSCHAFT

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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 February 26, 1988 and granted July 11, 1990. A European patent lasts at most 20 years from filing, so its term ended February 26, 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 August 26, 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.
FiledFebruary 26, 1988
PublishedSeptember 28, 1988
GrantedJuly 11, 1990
Term endedFebruary 26, 2008
Application numberEP 88102880
Classification (CPC)C08K9/08 +2 more

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedFeb 26, 1988PublishedSep 28, 1988Patent grantedJuly 11, 1990Term endedFeb 26, 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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