It is classified in the petty patent section. Because it is a creative idea with a not very high level of technological development that k has also used in this research. It's just a little bit of invention. and more useful
It is classified as a patent because it is a very low level of technological development used by K in this study. This is a small invention that is more practical.
It is included in the patent section because it is a creative invention with low technical development level adopted by K in this research. It is a small amount of invention and more useful.