Patent No. EP3619435 (titled "Optimised Tunnel Ventilation Device") was filed by Mosen on Feb 21, 2018. The application was issued on Sep 11, 2024.
A jetfan ventilation system for tunnels and car parks that achieves greater aerodynamic thrust without increasing pressure drop. The system uses a bellmouth to turn the discharged flow away from tunnel surfaces, rather than tilting the nozzle throughbore edge, thereby eliminating flow separation at the inlet and reducing pressure losses.

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
Date
Description
Get instant alerts for new documents