Microsoft co-founders Bill Gates and Paul Allen are among the investors putting another $29 million into Echodyne, the Intellectual Ventures spin-out that's developing low-cost, miniaturized radar systems for drones and self-driving cars.

Intellectual Ventures spinout Echodyne has raised $29 million in Series B funding led by New Enterprise Associates.

TechCrunch profiles Intellectual Ventures spinout Echodyne and its pocket-sized radar for drones.

Popular Mechanics gets a first-hand look at how Intellectual Ventures spinout TerraPower work, complete with a ping pong cannon demonstration.

Intellectual Ventures spinout Kymeta has pulled in $73.6 million from investors, according to a securities filing Thursday, one month before the company plans to officially launch sales of its flat-panel antennas.