How to find authorized patents on the national intellectual property network? It needs a lot. This is our homework. Who can tell us? thank you

First, enter the "Patent Search" page. If there is a patent number, patent name, etc. , direct input, and then query into the search results page. Click on the patent name to open the patent information page. Under the patent number, there is the words "page of application prospectus () and page of authorization brochure ()". Then click View Description (generally, you need to install a description browser to browse, otherwise the page will prompt, and then close all browsers after downloading. If you don't have any information about patents, there is a "ICP classified search" button in the right column of the "Patent Search" page. Click to enter, there will be the classification of the patent on the left, and then you can click on the classification you want to search. The following steps are the same as above.