一、前言 专利文献检索是指用一定的方法找到所需技术的专利号,再根据专利号提取专利文摘或专利说明书。查找所需技术的专利号一般有三种途径: 1.利用各国专利局出版的专利检索工具书,如专利公报、专利分类表及分类表索引、年度索引和多年累积索引; 2.利用期刊、样本、商品、报纸报道的专利号; I. Introduction Patent literature search refers to finding the patent number of the required technology by a certain method and then extracting the patent abstract or patent specification according to the patent number. There are generally three ways to find the patent number of the required technology: 1. The use of patent search tools such as patent gazettes, patent taxonomy and taxonomy index, annual index and multi-year cumulative index published by national patent offices. 2. Using journals, samples , Goods, newspapers reported the patent number;