U.S. GPS technology market research: opened GPS technology patents and the veil

Figure 5: In the past 10 years, the patent situation of the U.S. GPS.

Now look at another similar graph (Figure 6), which reflects the development in the past year the United States Patent GPS technology. Look at the two charts of the companies which have changed rank. This contrast provides a study table in GPS and navigation technology development effort and commitment by the unique perspective.