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Expired European patentEurope

Apparatus and method for generating a phase-controlled clock signal

EP 0677802 B1 · Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

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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 March 31, 1995 and granted January 23, 2002. A European patent lasts at most 20 years from filing, so its term ended March 31, 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 1, 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.
FiledMarch 31, 1995
PublishedOctober 18, 1995
GrantedJanuary 23, 2002
Term endedMarch 31, 2015
Application numberEP 95480034
Classification (CPC)G06F1/10 +1 more

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedMarch 31, 1995PublishedOct 18, 1995Patent grantedJan 23, 2002Term endedMarch 31, 2015

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