Ask experts to help check the following foreign patent numbers.

1, we can find that this patent has been applied for in some other countries, some authorized, some not. It is wrong to say that "seven patents have been obtained in the world", but it is actually just a patent applied in different places.

2. Obtain Korean patent right.

3. Obtain the European patent right.

4. Apply in Korea, but not authorized.

5. Wrong statement, not six. Patents can only be patented and authorized in the United States.

6. This patent is exactly the same as the fifth one, so it can't be said that it is two patents in the United States, but the number has changed, because you will be asked to modify the document during the review process of the US Bureau, and each stage will have a number through different procedures. In fact, the numbers have changed, but the content has not changed.

7. I wonder if I got this medal. I have to go to official website for this medal.