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Expired European patentEurope

Method for cleaning a workpiece after machining with a cutting instrument

EP 0205040 B1 · Applicant: International Business Machines Corporation

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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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 May 28, 1986 and granted August 28, 1991. A European patent lasts at most 20 years from filing, so its term ended May 28, 2006.
  • 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 November 28, 2011.
  • 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.
FiledMay 28, 1986
PublishedDecember 17, 1986
GrantedAugust 28, 1991
Term endedMay 28, 2006
Application numberEP 86107258
Classification (CPC)H05K3/0055

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedMay 28, 1986PublishedDec 17, 1986Patent grantedAug 28, 1991Term endedMay 28, 2006

Sources & verification