More than 2,000 students from primary, junior high and high school were granted nearly 3,000 patents last year, doubling the number awarded in 2009.

More than 95 percent of the inventions can be directly put to use in daily life, according to local authorities. Some 30 percent were new ways to save water or electricity.

A mini-water purifier designed by high school student Qi Hanxu uses natural minerals to absorb pollutants. Another student designed an electronic guide for the blind that uses solar energy and a voice navigation system.

The patents reflect efforts by city governments to establish model schools, train teachers and organize invention contests to encourage interest in innovation.

(Source: China Daily)