Is this also a patent? Let me give you an example. A man applied for a patent for an electric fan. He used a plastic propeller, and I made an electric fan except the screw.

1, yours belongs to material improvement, which first depends on whether the scope of patent protection emphasizes material selection;

2. The innovation of material improvement can also be patented, but most of them are innovative in the material itself, and then used in an existing field, so that the product performance has been improved.

Or an example of an electric fan. For example, in the past, the blades of electric fans were all made of metal, but you invented a new material and then you can use it as a blade. After this, the problems of metal rust and danger (such as plastic blades used in desktop fans now) have been solved. Then you will be creative and can apply for a patent.

However, just because you applied for a patent doesn't mean that you don't infringe others' existing patents. For example, the blade material is improved, and other structural designs are the same as the existing fan patents, so you need to obtain the permission of the existing patents to implement your patents, otherwise it is infringement. Of course, the other party can't use your patent, otherwise it will also constitute infringement on you.