United States Patent Application: 0030113244
As seen in one recent report:
West Virginia Coal Association | California Thermochemical Hydrogen Production | Research & Development; concerning: "United States Patent 7,960,063 - Hydrogen Production by a Thermochemical Water Splitting Cycle; 2011; Assignee: The Regents of the University of California; Abstract: A novel thermochemical cycle for the decomposition of water is presented. Along with water, hydrogen, and oxygen, the cycle involves an alkali or alkali earth metal based process intermediate and a variety of reaction intermediates. The cycle is driven by renewable energy sources";