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Expired European patentEurope

Method and device for creating undercuts on tooth flanks of internally or externally geared gear blanks

EP 1097018 B1 · Applicant: WERA WERK HERMANN WERNER GmbH & Co. KG

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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 July 19, 1999 and granted December 12, 2001. A European patent lasts at most 20 years from filing, so its term ended July 19, 2019.
  • 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 January 19, 2025.
  • 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.
FiledJuly 19, 1999
PublishedMay 9, 2001
GrantedDecember 12, 2001
Term endedJuly 19, 2019
Application numberEP 99936565
Classification (CPC)B23F19/00 +1 more

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedJuly 19, 1999PublishedMay 9, 2001Patent grantedDec 12, 2001Term endedJuly 19, 2019

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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