Phononic Vibes Patents

Patent portfolio assigned to Phononic Vibes (verified via public assignee records). Estimated patent count: 12. Politecnico di Milano spin-off (founded 2018) making acoustic/vibro-acoustic metamaterial noise/vibration panels. Patent confirmed: IT202000003769A1 'metamaterial-based sound insulation device', assignee Phononic Vibes SRL; company states ~12 patents granted/pending. Deutsche Bahn (MetaWindow/MetaVibration, railway-certified panel) and ProRail (Netherlands) named as test customers.