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Expired European patentEurope

Communication system with statistical control of gain

EP 1667321 B1 · Applicant: STMicroelectronics, Inc.

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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 November 28, 2005 and granted April 14, 2010. A European patent lasts at most 20 years from filing, so its term ended November 28, 2025.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledNovember 28, 2005
PublishedJune 7, 2006
GrantedApril 14, 2010
Term endedNovember 28, 2025
Application numberEP 05257301
Classification (CPC)H03G3/3089 +2 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedNov 28, 2005PublishedJune 7, 2006Patent grantedApril 14, 2010Term endedNov 28, 2025

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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