JD Holdings inc aquired all the assets, including the intellectual properties.
"Prudent Energy is a privately held company based in Beijing China, which is wholly owned by JD Holdings in the Cayman islands. The Company designs, develops and is commercializing the VRB energy storage technology to support stable, reliable and efficient electricity grid operation as well as the integration of large scale renewable energy."
It's not oil soaks you need to be concerned with. Forget EXXon. It's so yesterdays industry. The world is moving on.
If you want a bagaboo - watch mainland communist China. If electric powered anything is in your future, then the Chinese have the single most effective strategic approach on the planet, especially when it comes to renewable and alternative energy. They are aquiring key intellectual properties with a co-ordinated determination. Snoop a little with Google.
When one buys a product like batteries, especially where lot's of $$$$$$ are involved, it's always worth considering the wider consequences. Buy Canadian, or American, and our populations will have work, buy China, and they don't.
http://www.pdenergy.com/enTechnology.html