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Expired European patentEurope

Process for incorporating timing parameters in the synthesis of logic circuit design

EP 0259705 B1 · Applicant: DIGITAL EQUIPMENT 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 August 26, 1987 and granted September 28, 1994. A European patent lasts at most 20 years from filing, so its term ended August 26, 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 February 26, 2013.
  • 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.
FiledAugust 26, 1987
PublishedMarch 16, 1988
GrantedSeptember 28, 1994
Term endedAugust 26, 2007
Application numberEP 87112428
Classification (CPC)G06F30/327 +1 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedAug 26, 1987PublishedMarch 16, 1988Patent grantedSep 28, 1994Term endedAug 26, 2007

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