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Expired European patentEurope

Improved high-intensity rotary peening particle support and method of making same

EP 0540916 B1 · Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY

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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.

Why it's free to use

  • Filed October 15, 1992 and granted August 20, 1997. A European patent lasts at most 20 years from filing, so its term ended October 15, 2012.
  • 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 April 15, 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.
FiledOctober 15, 1992
PublishedMay 12, 1993
GrantedAugust 20, 1997
Term endedOctober 15, 2012
Application numberEP 92117626
Classification (CPC)C21D1/18 +2 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedOct 15, 1992PublishedMay 12, 1993Patent grantedAug 20, 1997Term endedOct 15, 2012

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