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Expired European patentEurope

Direct conversion receiver for digital signals and method for demodulation of said signals

EP 0477175 B1 · Applicant: ITALTEL SOCIETA ITALIANA TELECOMUNICAZIONI s.p.a.

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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 January 22, 1990 and granted August 3, 1994. A European patent lasts at most 20 years from filing, so its term ended January 22, 2010.
  • 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 July 22, 2015.
  • 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.
FiledJanuary 22, 1990
PublishedApril 1, 1992
GrantedAugust 3, 1994
Term endedJanuary 22, 2010
Application numberEP 90903353
Classification (CPC)H03G3/3052 +2 more

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedJan 22, 1990PublishedApril 1, 1992Patent grantedAug 3, 1994Term endedJan 22, 2010

Sources & verification

Official EPO records

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

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

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