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Expired European patentEurope

Radar system and components therefor for transmitting an electromagnetic signal underwater

EP 0631152 B1 · Applicant: RAYTHEON COMPANY

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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 17, 1994 and granted April 4, 2001. A European patent lasts at most 20 years from filing, so its term ended June 17, 2014.
  • 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 17, 2019.
  • 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 17, 1994
PublishedDecember 28, 1994
GrantedApril 4, 2001
Term endedJune 17, 2014
Application numberEP 94304400
Classification (CPC)G01S13/0209

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedJune 17, 1994PublishedDec 28, 1994Patent grantedApril 4, 2001Term endedJune 17, 2014

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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