Hi,
You may see companies like SEFE Inc, listed on the NASDAQ OTCBB market under the ticker SEFE, stating that they're on the verge of creating the next energy super-trend: an entirely new alternative energy industry called Atmospheric Energy.

For the record these technologies do exist, but they have and always will fall foul of the Invention Secrecy Act http://en.wikipedia.org/wiki/Invention_Secrecy_Act.

In a nutshell, once you are ready to go into production with these technologies the Governments confiscate the invention and force you to sign the Official Secrets Act not to divulge any details regarding the invention.

There have been many much better inventions than this confiscated by the Government.