Patent literature retrieval can be queried in the following two ways:
1. Official websites, such as China Patent Office and US Patent Office. 2. Third-party patent search platforms, some are paid and some are free.
What are the main retrieval methods of patent documents?
Second, how to conduct patent search?
Patent retrieval is the channel and method to find patent specifications. Including using all kinds of commonly used patent retrieval tools and mastering commonly used retrieval methods. Commonly used retrieval tools include: various patent reference books, such as patent classification table, patent abstract, patent name bulletin, patentee index, patent bulletin, etc. Searching for patents can be classified by patents or inventors. The steps of searching by patent classification are: searching patent names and translating names in different languages; Find the patent classification number in alphabetical order; Use the classification table to view or further find the classification number of the topic; Find the patent number by the classification number; Find the abstract of patent specification by patent number. The steps of searching by the inventor's name are: searching the name of the patentee or its affiliated company through the patentee index, and searching the name of the patent itself; Find the abstract of patent specification by patent number.