How to search the full text of China patent literature

(1) Simple Search is located in the middle right of the home page, providing 1 search items and 1 search item options. Users can enter 1 search types (search types can be words, dates or numbers) in the search input box, then select the drop-down list option of search items to limit the search range of the entered search types, and finally click the "Search" button. The "Search Item" drop-down list * * * provides nine options, namely: application (patent) number, application date, publication (announcement) number, publication (announcement) date, applicant (patent), inventor (designer), name, abstract and main classification number. (2) Advanced Search Click "Advanced Search" in the middle right of the home page to enter the search page. You can see that there are three options at the top of the page: invention patent, utility model patent and design patent. Search in all patents by default, that is, search all inventions, utility models and design patents. If you select any one of "invention patent", "utility model patent" or "design patent", you will only search in the selected patent type database. There are 16 search fields under the search page range setting. Users can select one or more search fields to input the corresponding search content. Some fields also allow complex logical operations, and logical operators and fuzzy characters can be used. All retrieval fields are logical AND operations. Click "Instructions for Use" on the right side of the retrieval page to view the meaning, input format and retrieval examples of the corresponding retrieval fields. (3)IPC classified retrieval provides a link of "IPC classified retrieval" on the right side of the retrieval page. Click to enter, and you can see that the codes and class names of eight departments of the International Patent Classification Table are listed on the left side of the page, and the 16 retrieval field is listed on the right side. Because IPC classification number only applies to invention and utility model patents, only two options "invention patent" and "utility model patent" are displayed at the top of the page. IPC classification retrieval can query and retrieve the class name of international patent classification number. On the basis of defining the classification number, it can also combine the classification number and other fields, and all retrieval fields are logical AND operations. Click the class name of any department, and the system will list the class names of subordinate categories, subcategories, large groups and groups step by step. The corresponding class name will appear in the "ClassificationNo." portal on the right. Enter the search type in other search portals and click "Search" at the bottom of the page to get the search results of classificationNo. and other fields. If you click the "Search" icon to the left of the class name, you will get the search results of all inventions and utility model patents under the corresponding classification. After entering all the search criteria correctly, click "Search" at the bottom of the page, and the system will execute the search and enter the search result display page. The Chinese version of China Patent Retrieval Database provides three kinds of results display: search results list display (including application number and patent name), patent text display (including bibliographic data, abstracts and proprietary items), and patent specification full-text image display. The top of the search results list display page is the number of hit records of "invention patent", "utility model patent" and "design patent" in turn. The retrieved patent documents are arranged from the back to the front according to the publication date of the patent documents, that is, the latest published patent documents are ranked first. The display page can only display 20 records at a time. You can continue browsing by clicking the page skip button. Click the application number or patent name of any patent document in the search result list to enter the patent text display page. At the top left of the page, the page links and the total number of pages of the pictures applying for public education are listed. If the patent has been authorized, the system will also list the picture page link and the total number of pages of the authorization instruction on the right. In the middle of the page, the title data, abstract and sovereignty items of the patent document are displayed in text form. Click the picture page link to enter the full-text picture display page of the patent specification. The full-text images of instructions in the database are in TIFF format, so you need to install a browser to see them.