The highest number of clean energy patent applications is lodged by the US, which accounts for a quarter, followed by Germany and Japan at 18 and 16 per cent respectively in 2008.
清洁能源专利申请数量最高的是美国，占到申请总数的四分之一，其次是德国和日本——在2008年的比例分别为18%和16%。
The highest number of clean energy patent applications is lodged by the US, which accounts for a quarter, followed by Germany and Japan at 18 and 16 per cent respectively in 2008.
清洁能源专利申请数量最高的是美国，占到申请总数的四分之一，其次是德国和日本——在2008年的比例分别为18%和16%。
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