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Expired European patentEurope

Distributed sensor array and method using a pulsed signal source

EP 0251632 B1 · Applicant: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY

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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 22, 1987 and granted April 14, 1993. A European patent lasts at most 20 years from filing, so its term ended June 22, 2007.
  • 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 December 22, 2012.
  • 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 22, 1987
PublishedJanuary 7, 1988
GrantedApril 14, 1993
Term endedJune 22, 2007
Application numberEP 87305541
Classification (CPC)G01D5/35383

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedJune 22, 1987PublishedJan 7, 1988Patent grantedApril 14, 1993Term endedJune 22, 2007

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

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