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Expired European patentEurope

Random pulse generation source, and semiconductor device, method and program for generating random number and/or probability using the source

EP 1771946 B1 · Applicant: Tsuyuzaki, Noriyoshi

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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 28, 2005 and granted July 31, 2019. A European patent lasts at most 20 years from filing, so its term ended June 28, 2025.
  • 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.
FiledJune 28, 2005
PublishedApril 11, 2007
GrantedJuly 31, 2019
Term endedJune 28, 2025
Application numberEP 05755752
Classification (CPC)H03K3/84 +2 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedJune 28, 2005PublishedApril 11, 2007Patent grantedJuly 31, 2019Term endedJune 28, 2025

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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