European application, no grantEurope
Audio signal processor comprising a means for embedding an audible watermark in an audio signal, audio player comprising a means for removing the audible watermark and audio distribution system and method using the audio signal processor and the audio player
EP 1189372 A2 · Applicant: Matsushita Electric Industrial Co., Ltd.
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 August 15, 2001 and never granted as a European patent. Had it been granted, its 20-year term would have ended August 15, 2021.
- Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
- 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.
FiledAugust 15, 2001
PublishedMarch 20, 2002
GrantedNever granted
Term endedAugust 15, 2021
Application numberEP 01306934
Classification (CPC)G11B20/00086 +2 more
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.