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Expired European patentEurope

Video display apparatus comprising a bus controlled compensation circuit using a PWM control signal

EP 0817506 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 June 20, 1997 and granted October 19, 2005. A European patent lasts at most 20 years from filing, so its term ended June 20, 2017.
  • 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 December 20, 2022.
  • 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.
FiledJune 20, 1997
PublishedJanuary 7, 1998
GrantedOctober 19, 2005
Term endedJune 20, 2017
Application numberEP 97110082
Classification (CPC)H04N9/29

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedJune 20, 1997PublishedJan 7, 1998Patent grantedOct 19, 2005Term endedJune 20, 2017

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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