TOKYO -- Though Japan continues to lead the world in hydrogen-related technology, its edge is narrowing as new patent filings by the country's companies and research institutions slow while Chinese players forge ahead with government backing.
Technology
China closes in on Japan's hydrogen technology patent lead
Race to develop ultimate clean fuel heats up as Japanese filings slow by 30%
Kawasaki Heavy Industries built the world's first liquefied hydrogen carrier. (Photo by Arisa Moriyama)
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