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Expired European patentEurope

Avalanche photodiode quenching circuit

EP 0481016 B1 · Applicant: SECRETARY OF STATE FOR DEFENCE IN HER BRITANNIC MAJESTY'S GOV. OF THE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND

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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 July 2, 1990 and granted May 25, 1994. A European patent lasts at most 20 years from filing, so its term ended July 2, 2010.
  • 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 January 2, 2016.
  • 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.
FiledJuly 2, 1990
PublishedApril 22, 1992
GrantedMay 25, 1994
Term endedJuly 2, 2010
Application numberEP 90917799
Classification (CPC)G01J1/44 +1 more

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedJuly 2, 1990PublishedApril 22, 1992Patent grantedMay 25, 1994Term endedJuly 2, 2010

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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