Board Thread:General Discussion/@comment-7030486-20130309013538/@comment-4957813-20130309020325

To further this, Uryu is the grandson and student of Soken Ishida, who did not want to learn the new Quincy techniques the Vandenreich had developed. Since Soken didn't participate in the development or had any knowledge of how to use it, he could not have taught Uryu how to use Blut Vene, so Uryu couldn't use Blut Vene. Ichigo could only access it because from what we know, Masaki was a Quincy and could have knowledge of using Blut and the genetic memory of that technique could have passed to Ichigo