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Expired European patentEurope

Storage stable heat curable organosiloxane compositions containing a microencapsulated catalyst and method for preparing said catalyst

EP 0550239 B1 · Applicant: DOW CORNING 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 December 22, 1992 and granted September 10, 1997. A European patent lasts at most 20 years from filing, so its term ended December 22, 2012.
  • 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 June 22, 2018.
  • 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.
FiledDecember 22, 1992
PublishedJuly 7, 1993
GrantedSeptember 10, 1997
Term endedDecember 22, 2012
Application numberEP 92311690
Classification (CPC)C07C255/41

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedDec 22, 1992PublishedJuly 7, 1993Patent grantedSep 10, 1997Term endedDec 22, 2012

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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