Since the chat box can hold all the material names I added functionality so that you can filter your block bank inventory request.

So,
Command: /b.bbinv
returns: Your whole inventory of your blockbank.

Command: /b.bbinv Stone
returns: anything in your inventory with the material name of Stone

Command: /b.bbinv D%
returns: Returns anything in your Bank that starts with a "D"

Command: /b.bbinv %Stair%
returns: Anything in your bank that has the word "stair" in it.