ALEXANDRIA, Va., Jan. 21 -- 3M Innovative Properties, St. Paul, Minnesota, has been assigned a patent (8,936,022) developed by Garry J. Walker, Stock-on-Tees, United Kingdom, Andrew Murphy, Ferryhill, United Kingdom, and Desmond T. Curran, Durham, United Kingdom, for an "air delivery apparatus for respirator hood."

The patent application was filed on March 21, 2008 (12/530,479). The full-text of the patent can be found at http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2= . . .