Derwent化工专利收录范围 (国家、年代)
Derwent化工专利收录范围说明，包括国家及其代码、专利类别代码、收录年限。

免费专利下载工具GetIPDL
【用途】 GetIPDL downloads patent documents from JPO, USPTO, esp@cenet, DEPATISnet, Delphion and other free patent document delivery sites. It can download texts and images.

国家知识产权局：专利文献基础知识

World Patent Information

    The aim of World Patent Information is to provide a worldwide forum for the exchange of information between people working professionally in the field of Industrial Property information and documentation and to promote the widest possible use of the associated literature.
    Regular features include: papers concerned with all aspects of Industrial Property information and documentation new regulations pertinent to Industrial Property information and documentation short reports on relevant meetings and conferences bibliographies, together with book and literature reviews.

了解专利术语（英文版）
这是一篇介绍专利术语的文章，发表在 JOM,48 (9) (1996), pp. 77-79.