Toyota, with cash to burn (and nothing like GM's retired-worker liabilities), has a strong fuel-cell program but believes that 30 years from now all cars will run on hybrids-Toyota's technological strength.

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Japan's technological prowess is a reminder of the country's industrial strength at a time when it is struggling to overcome nearly two decades of economic stagnation and is poised to lose its place as the world's second-largest economy to China.

ECONOMIST: Japan's technology champions

Given continued concerns about the strength of intellectual property enforcement in China, do these patents represent significant technological breakthroughs?

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