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Expired European patentEurope

Catalyst and unsatured compound hydrogenation process and also a process for the preparation of the catalyst

EP 0576828 B1 · Applicant: HÜLS 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 May 26, 1993 and granted April 23, 1997. A European patent lasts at most 20 years from filing, so its term ended May 26, 2013.
  • 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 November 26, 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.
FiledMay 26, 1993
PublishedJanuary 5, 1994
GrantedApril 23, 1997
Term endedMay 26, 2013
Application numberEP 93108470
Classification (CPC)B01J35/70 +2 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedMay 26, 1993PublishedJan 5, 1994Patent grantedApril 23, 1997Term endedMay 26, 2013

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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