使用当前分类查找授权专利和公开专利申请数据库，并阅读全文专利以及公开专利申请文件；
Search the Issued Patents and the Published Applications databases by "Current US Classification" and access full-text patents and published applications.
文章对中国国家知识产权局（SIPO）专利数据库中海洋能专利授权情况进行了分类统计。
Wherefore, ocean energy conversion patents in State Intellectual Property Office of P. R. China(SIPO) are searched and sorted.
文章对中国国家知识产权局（SIPO）专利数据库中海洋能专利授权情况进行了分类统计。
Wherefore, ocean energy conversion patents in State Intellectual Property Office of P. R. China(SIPO) are searched and sorted.
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