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Expired European patentEurope

Mechanical acoustic crossover network and transducer therefor

EP 1044584 B1 · Applicant: MOTOROLA, INC.

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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 November 20, 1998 and granted July 30, 2008. A European patent lasts at most 20 years from filing, so its term ended November 20, 2018.
  • 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 May 20, 2024.
  • 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.
FiledNovember 20, 1998
PublishedOctober 18, 2000
GrantedJuly 30, 2008
Term endedNovember 20, 2018
Application numberEP 98960324
Classification (CPC)H04R3/14

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedNov 20, 1998PublishedOct 18, 2000Patent grantedJuly 30, 2008Term endedNov 20, 2018

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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