Sigma Labs Inc (SASI)

[MDuffy]

They DO have a patent on it... so it doesn't really matter if that aspect isn't part of the current offering. United States patent laws do not require you to have a prototype in order to apply for a patent, all that is required is that you be able to describe the invention so that others could both make and use it, which they did.

That's why they are both integrating their software with others' machines, AND working on their own 3D printer, because they hold the intellectual property rights to the whole process. It would be stupid to just give your tech away if someone else could achieve the same result legally. That's why they envision the "Intel Inside" model.