Simple search is located in the middle of the right side 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 retrieval
Click "Advanced Search" in the right middle 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.
(3)IPC classification retrieval
On the right side of the retrieval page, a link to "IPC classified retrieval" is provided. Click to enter the page. The codes and class names of eight departments of the International Patent Classification Table are listed on the left, and the 16 search field is listed on the right. 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.