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Expired European patentEurope

High frequency circuit using high output amplifier cell block and low output amplifier cell block

EP 1148633 B1 · Applicant: KABUSHIKI KAISHA TOSHIBA

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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 April 5, 2001 and granted November 15, 2006. A European patent lasts at most 20 years from filing, so its term ended April 5, 2021.
  • 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 5, 2026.
  • 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.
FiledApril 5, 2001
PublishedOctober 24, 2001
GrantedNovember 15, 2006
Term endedApril 5, 2021
Application numberEP 01303251
Classification (CPC)H03F3/72 +1 more

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedApril 5, 2001PublishedOct 24, 2001Patent grantedNov 15, 2006Term endedApril 5, 2021

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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