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Expired European patentEurope

Entropy codec for fast data compression and decompression

EP 1154575 B1 · Applicant: Hewlett-Packard Company, A Delaware 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 February 7, 2001 and granted May 4, 2005. A European patent lasts at most 20 years from filing, so its term ended February 7, 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 August 7, 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.
FiledFebruary 7, 2001
PublishedNovember 14, 2001
GrantedMay 4, 2005
Term endedFebruary 7, 2021
Application numberEP 01102700
Classification (CPC)H03M7/40

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedFeb 7, 2001PublishedNov 14, 2001Patent grantedMay 4, 2005Term endedFeb 7, 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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