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介绍美国专利的重要特点和作用;美国专利商标局的网址和主页;美国专利的快速检索入口;免费快速检索美国化工专利的步骤、注意点以及把美国化工专利翻译成中文的方法。
Introduce the important features and functions of the U.S. patents; URL and home page of the U.S.PTO; Quick search portal for U.S. patents; Free and fast retrieval of U.S. chemical patent steps, cautions and translations of U.S. chemical patents into Chinese.