ALEXANDRIA, Va., Oct. 1 -- Acclarent, Menlo Park, California, has been assigned a patent (8,849,394) developed by seven co-inventors for a "system and method for the simultaneous bilateral integrated tympanic drug delivery and guided treatment of target tissues within the ears." The co-inventors are Anton G. Clifford, Mountain View, California, Greg Liu, Sunnyvale, California, John H. Morriss, San Francisco, Joshua Makower, Los Altos, California, William M. Facteau, Mountain View, California, Er . . .