2. China patents can be found on soopat. Searching for foreign patents requires members to pay, and the cost is very small.
3. It's all free to find patents in OTE, but the website is very slow.
4. Baidu is not suitable for patent search.
5. You can use the words such as patent number, inventor, patentee, patent name and keywords to find patents.
6. If it is a professional patent inquiry, it will not be clear in one or two sentences. You should read more books and attend more training.