Expired European patentEurope
Process and device for determining the tonality of an audio signal
EP 0772764 B1 · Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
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.
Why it's free to use
- Filed February 9, 1996 and granted January 14, 1998. A European patent lasts at most 20 years from filing, so its term ended February 9, 2016.
- 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 August 9, 2021.
- 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.
FiledFebruary 9, 1996
PublishedMay 14, 1997
GrantedJanuary 14, 1998
Term endedFebruary 9, 2016
Application numberEP 96904042
Classification (CPC)H03G5/005
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.