Amazon Kindle dual-screen e-reader patent granted, Barnes & Nobl Looks like the battle for e-reader dominance between Amazon and Barnes & Noble could soon expand beyond the recent spate of price drops and into the courtroom as well: the USPTO just granted a 2006 Amazon patent on e-readers with secondary LCD displays (like the original Kindle's scroller-navigation panel ), and several of the claims are potentially broad enough to cover the Nook and many other devices with both electronic paper and LCD displays.
Amazon Kindle 2
Amazon Kindle 3
Amazon Kindle DX
Kindle Vs Nook Over the past few years, the market of e-readers has grown exponentially. Competition between e-reader products like Kindle from Amazon and Barnes & Noble's Nook is only increasing.