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Expired European patentEurope

High-strenght heat resisting cast steel, method of producing the steel, and applications of the steel

EP 1770182 B1 · Applicant: HITACHI, LTD.

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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 September 27, 2006 and granted December 14, 2011. A European patent lasts at most 20 years from filing, so its term ended September 27, 2026.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledSeptember 27, 2006
PublishedApril 4, 2007
GrantedDecember 14, 2011
Term endedSeptember 27, 2026
Application numberEP 06020264
Classification (CPC)C22C38/02 +2 more

Timeline

Timeline From EPO dates

2007200920112013201520172019202120232025Application filedSep 27, 2006PublishedApril 4, 2007Patent grantedDec 14, 2011Term endedSep 27, 2026

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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