http://www.ptsc.com/news/press_releases/2007notes.asp
Also, what originally appeared to be promising discussions regarding a potential joint venture in China regarding the Ignite chip have dried up. Although there currently is no ongoing R&D regarding the Ignite chip, consideration is being given, among other things, to a feasibility review of the company's patent on ground penetrating radar technology and the possibility of combining it with more recent technology plus perhaps the Ignite chip.
http://werbach.com/docs/RadioRevolution.pdf