Any person who has invented or discovered a new and useful process, machine, article of manufacture, or composition of matter may obtain a patent for it. This also includes any new or useful improvement on a past invention. Laws of nature and theories are not patentable. You do not need to have actually constructed or used your invention to get a patent on it. Having a good idea of how your invention is made and used is sufficient.
In general, the basic principles of patentability could be based on two questions:
Is the invention useful? and Is the invention new?
You may obtain a Patentability Opinion from a Patent Attorney who will determine if you’re your invention qualifies for patent based on the nature of its subject matter and its comparison to a Prior Art search.
If you are interested in more detail related to your situation it is best to speak with an attorney.
Yuri Eliezer heads the intellectual property practice group at Founders Legal. As an entrepreneur who saw the importance of early-stage patent protection, Yuri founded SmartUp®. Clients he has served include Microsoft, Cisco, Cox, AT&T, General Electric, the Georgia Institute of Technology, and Coca-Cola.