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Expired European patentEurope

Catalyst based on zeolite, use and epoxidation method in the presence of said catalyst

EP 1051255 B1 · Applicant: SOLVAY (Société Anonyme)

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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 November 23, 1998 and granted September 22, 2004. A European patent lasts at most 20 years from filing, so its term ended November 23, 2018.
  • 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 May 23, 2024.
  • 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.
FiledNovember 23, 1998
PublishedNovember 15, 2000
GrantedSeptember 22, 2004
Term endedNovember 23, 2018
Application numberEP 98963500
Classification (CPC)C07D301/12 +1 more

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedNov 23, 1998PublishedNov 15, 2000Patent grantedSep 22, 2004Term endedNov 23, 2018

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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