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Expired European patentEurope

A NOT circuit

EP 1662575 B1 · Applicant: Japan Science and Technology Agency

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Overview

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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 October 29, 2001 and granted October 17, 2007. A European patent lasts at most 20 years from filing, so its term ended October 29, 2021.
  • 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.
FiledOctober 29, 2001
PublishedMay 31, 2006
GrantedOctober 17, 2007
Term endedOctober 29, 2021
Application numberEP 06001940
Classification (CPC)H10N70/8833 +2 more

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedOct 29, 2001PublishedMay 31, 2006Patent grantedOct 17, 2007Term endedOct 29, 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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.