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Expired European patentEurope

Modulation detector and classifier

EP 0140925 B1 · Applicant: PSR PRODUCTS, INC.

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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 March 16, 1984 and granted February 27, 1991. A European patent lasts at most 20 years from filing, so its term ended March 16, 2004.
  • 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 September 16, 2009.
  • 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.
FiledMarch 16, 1984
PublishedMay 15, 1985
GrantedFebruary 27, 1991
Term endedMarch 16, 2004
Application numberEP 84901527
Classification (CPC)G01R23/00 +2 more

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedMarch 16, 1984PublishedMay 15, 1985Patent grantedFeb 27, 1991Term endedMarch 16, 2004

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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