New d4 dice

I´d say it is on the top of the die. And I like the idea of "rounding" the D4.

But maybe it would be more clear, if you have 3 digits on each circle, with the one actually olled heading upwards (as the tetrahedron usually have)

I'm fine with the number on top, though I've seen that style of D4 before (on shapeways.com at the very least, but I think elsewhere, too)- so I'm not sure spending any time or money pursuing a patent is worthwhile (even if awarded, it would be hard to defend due to prior use).

however, if you mass produce them so their costs are in line with normal D4's (something shapeways can't really do), it seems like a decent product.

I guess you're referring to the d4-d4 system. Actually, its quite a nice, FUDGE like rules set.

As for rolling a d4, there are three main ways to do it:

1. Use a dice cup. A good shake in a dice cup and you get a good roll.
2. Drop the point onto a hard surface from about six inches. It will bounce and roll, though it may also fly off the table, or into someones eye (which may be a plus depending on your players).
3. Put them in your palm. Turn your hand over so they rest on your fingers. Jerk your hand so your fingers release them and cause them to spin in air. Also harder to control.

I say, just get a cup. It good for all dice, and you don't have them rolling all over your game board.