His patent was issued in 2000. It is about to lapse. http://www.stirlingengine.com/kamen/dean_kamen_patent.html
On Wed, Jul 2, 2014 at 8:22 PM, Blaze Spinnaker <[email protected]> wrote: > > http://www.forbes.com/sites/christopherhelman/2014/07/02/dean-kamen-thinks-his-new-stirling-engine-could-power-the-world/?utm_campaign=techtwittersf&utm_source=twitter&utm_medium=social > > With the Beacon 10, says Kamen, “you don’t have to feel guilty heating up > the pool.” That’s because of the highly efficient nature of the Stirling > engine. >
