About Uryu: Ichigo stated that she is healing his injuries. As for Ulquiorra: it is extremely unlikely, as there was absolutely nothing left of him and Orihime has always needed at least a part of the object/person to restore it.
To make the point clear while she possesses the ability to possibly bring back Ulquiorra she will not. He no longer serves a purpose in the series nor is he a friend nor does he the possibility of being one. It would be similar to bringing back a hollow, only for it to rampage and destroy everything again.