Patent retrieval is a specific 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: all kinds of patent reference books, such as patent classification table, patent abstract, patent document announcement, patentee index, patent announcement, 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 check or further find the classification number of the subject; Search the patent number according to the classification number; Search the abstract of patent specification by patent number. The steps of searching by the inventor's name are as follows: verify the name of the patentee or its company and the name of the patent itself through the patentee index; Search the abstract of patent specification by patent number.