When you think of wireless charging, you probably think of special charging pads for your phone. But what if your phone could partly charge itself? Radient Micro-Tech claims to have managed just that. It just received two patents for technology that reportedly captures energy from a device's wasted radio waves (those that would merely dissipate in the air) for the sake of charging. While it's not specific about how the technology works, it would harvest those RF waves through antennas built into your phone's screen. Radient is claiming that you'd get up to 30 percent longer battery life, which could be enough to get you through a particularly active day.