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Expired European patentEurope

Seamless steel tube for drive shaft and method of manufacturing the same

EP 1595609 B1 · Applicant: SUMITOMO METAL INDUSTRIES, 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 January 28, 2004 and granted January 9, 2008. A European patent lasts at most 20 years from filing, so its term ended January 28, 2024.
  • 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.
FiledJanuary 28, 2004
PublishedNovember 16, 2005
GrantedJanuary 9, 2008
Term endedJanuary 28, 2024
Application numberEP 04705922
Classification (CPC)B21B17/02 +1 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedJan 28, 2004PublishedNov 16, 2005Patent grantedJan 9, 2008Term endedJan 28, 2024

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

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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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