You have NO protection for your idea. If you want protection you must file a patent application in the US Patent and Trademark Office - www.uspto.gov and obtain a patent. Otherwise, you could try to keep your invention secret (a trade secret) - but once made public - the secret is likely gone. The Coca Cola formula is a famous trade secret - as it has not yet been exactly reproduced by competitors. Once you put your invention in the public arena (sale, offer for sale, etc.) you have only one year to file a patent application. Also - another person could see your invention, modify it some, and file a patent application on that version - which under current US Law could block your later filed application from being granted a patent. GOOD LUCK!
Answered on May 20th, 2015 at 1:55 PM