If you are significant about an idea and want to see it turned into a completely fledged invention, it is important to obtain some kind of patent protection, at least to the 'patent pending' standing. Without having that, it is unwise to advertise or encourage the idea, as it is easily stolen. A lot more than that, companies you strategy will not get you critically - as with out the patent pending standing your notion is just that - how to submit a patent an thought.

1. When does an concept turn into an invention?

Whenever an notion gets patentable it is referred to as an invention....