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Expired European patentEurope

Data compression method and apparatus in which quantizing bits are allocated to a block in a present frame in response to the block in a past frame

EP 0545017 B1 · Applicant: SONY CORPORATION

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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 September 30, 1992 and granted June 11, 2003. A European patent lasts at most 20 years from filing, so its term ended September 30, 2012.
  • 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 March 30, 2018.
  • 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.
FiledSeptember 30, 1992
PublishedJune 9, 1993
GrantedJune 11, 2003
Term endedSeptember 30, 2012
Application numberEP 92116735
Classification (CPC)H04B1/665

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedSep 30, 1992PublishedJune 9, 1993Patent grantedJune 11, 2003Term endedSep 30, 2012

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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