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Expired European patentEurope

Electrostatic and magnetic lens for corpuscular beam apparatus

EP 0242602 B1 · Applicant: ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH

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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 March 20, 1987 and granted July 21, 1993. A European patent lasts at most 20 years from filing, so its term ended March 20, 2007.
  • 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 September 20, 2012.
  • 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.
FiledMarch 20, 1987
PublishedOctober 28, 1987
GrantedJuly 21, 1993
Term endedMarch 20, 2007
Application numberEP 87104111
Classification (CPC)H01J37/10 +1 more

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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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