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Expired European patentEurope

Particle-optical apparatus comprising a detector for secondary electrons

EP 0708975 B1 · Applicant: PHILIPS ELECTRONICS N.V.

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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 April 4, 1995 and granted December 3, 1997. A European patent lasts at most 20 years from filing, so its term ended April 4, 2015.
  • 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 October 4, 2020.
  • 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.
FiledApril 4, 1995
PublishedMay 1, 1996
GrantedDecember 3, 1997
Term endedApril 4, 2015
Application numberEP 95912389
Classification (CPC)H01J37/28

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedApril 4, 1995PublishedMay 1, 1996Patent grantedDec 3, 1997Term endedApril 4, 2015

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