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Expired European patentEurope

Field synchronization system maintaining interlace integrity

EP 0533748 B1 · Applicant: THOMSON CONSUMER ELECTRONICS, 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 May 29, 1991 and granted November 21, 2001. A European patent lasts at most 20 years from filing, so its term ended May 29, 2011.
  • 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 November 29, 2016.
  • 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.
FiledMay 29, 1991
PublishedMarch 31, 1993
GrantedNovember 21, 2001
Term endedMay 29, 2011
Application numberEP 91910878
Classification (CPC)H04N7/01 +2 more

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedMay 29, 1991PublishedMarch 31, 1993Patent grantedNov 21, 2001Term endedMay 29, 2011

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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