rkUS20020030812Nov 16, 2001Mar 14, 2002Ortyn William E.Imaging and analyzing parameters of small moving objects such as cells in broad flat flowUS20020126275Mar 12, 2001Sep 12, 2002Johnson Paul E.LED illuminated particle detection apparatus and methodsUSRE35868Nov 30, 1995Aug 11, 1998Toa Medical Electronics Co., Ltd.Apparatus for imaging particles in a liquid flowWO1998053093A1May 22, 1998Nov 26,