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Expired European patentEurope

Random number generating method and semiconductor integrated circuit device

EP 1715409 B1 · Applicant: Hitachi ULSI Systems Co.,Ltd.

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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 12, 2004 and granted June 9, 2010. A European patent lasts at most 20 years from filing, so its term ended February 12, 2024.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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 12, 2004
PublishedOctober 25, 2006
GrantedJune 9, 2010
Term endedFebruary 12, 2024
Application numberEP 04710508
Classification (CPC)H04L9/06 +1 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedFeb 12, 2004PublishedOct 25, 2006Patent grantedJune 9, 2010Term endedFeb 12, 2024

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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