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Expired European patentEurope

Semiconductor memory device having serially addressing scheme

EP 0233363 B1 · Applicant: NEC 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 December 19, 1986 and granted June 3, 1992. A European patent lasts at most 20 years from filing, so its term ended December 19, 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 June 19, 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.
FiledDecember 19, 1986
PublishedAugust 26, 1987
GrantedJune 3, 1992
Term endedDecember 19, 2006
Application numberEP 86117730
Classification (CPC)G11C7/103 +1 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedDec 19, 1986PublishedAug 26, 1987Patent grantedJune 3, 1992Term endedDec 19, 2006

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