Blue-Sky Filter Patent Issued

We are pleased to announce that on December 13, 2013, US Patent No. 8,597,391 B1 was issued for the Osprey Blue-Sky filter. First introduced at Index 2011, the Blue-Sky filter is a proven and safe filter design for those wanting the highest filtration efficiency available along with a reduced explosion risk. The filter consists of a primary rotary drum filter stage and a HEPA filter stage coupled to the outlet side of at least one passive filter stage.

Osprey was also issued on March 25, 2014, US Patent No. 8,679,236 B1 for a Blue-Sky filter retrofit method. This retrofit method can be for the replacement of Osprey Cartridge Final Filters or as an addition to single stage filters. Todd Dietz, Osprey’s engineering manager, was instrumental in the patent process. We would like to thank Todd, Drew White, and the many others at Osprey for a successful outcome.