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Expired European patentEurope

Method of linear friction welding of blades to aerofoil blisks and blade having a root with a taper ratio less than 2

EP 1495829 B1 · Applicant: ROLLS-ROYCE plc

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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 June 11, 2004 and granted April 2, 2008. A European patent lasts at most 20 years from filing, so its term ended June 11, 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.
FiledJune 11, 2004
PublishedJanuary 12, 2005
GrantedApril 2, 2008
Term endedJune 11, 2024
Application numberEP 04253486
Classification (CPC)F01D5/34 +2 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedJune 11, 2004PublishedJan 12, 2005Patent grantedApril 2, 2008Term endedJune 11, 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

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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