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Expired European patentEurope

Piezoelectric crystal element based in GaPO4

EP 0370996 B1 · Applicant: AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH.Prof.Dr.Dr.h.c. Hans List

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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 October 10, 1989 and granted January 12, 1994. A European patent lasts at most 20 years from filing, so its term ended October 10, 2009.
  • 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 April 10, 2015.
  • 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.
FiledOctober 10, 1989
PublishedMay 30, 1990
GrantedJanuary 12, 1994
Term endedOctober 10, 2009
Application numberEP 89890267
Classification (CPC)H03H9/02039

Timeline

Timeline From EPO dates

1990199219941996199820002002200420062008Application filedOct 10, 1989PublishedMay 30, 1990Patent grantedJan 12, 1994Term endedOct 10, 2009

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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