Stan Meyer with the original Water Fuel Cell, which he successfully demonstrated to the USPTO, in his Sec. 101 hearing, which resulted in the issuance of U.S. Patent 4,936,961, a fundamental "Methods" patent on the process. This patent, along with another on the device architecture, both expire on June 26th of 2007. As a result, this technology falls into the public domain, forever.
The WFC has recently been successfully replicated by Lawton in the UK: http://www.youtube.com/watch?v=OiA4z_Kpgg4 and http://www.youtube.com/watch?v=Md8-wvV2jHM