ALEXANDRIA, Va., July 31 -- Air System Components, Plano, Texas, has been assigned a patent (9,092,017) developed by three co-inventors for "energy recovery ventilation effectiveness calculation and indication." The co-inventors are Alexis Rosa, Dallas, Michael G. Longman, Coppell, Texas, and John Pinkston, Carrollton, Texas.

The patent application was filed on March 20, 2012 (13/424,412). The full-text of the patent can be found at http://patft.uspto.gov/netacgi/nph-Parser?Sect1= . . .