How to classify invention patents?

According to different classification standards, inventions can be divided into different categories. For example, according to the status of invention completion, it can be divided into completed inventions and unfinished inventions. Unfinished inventions, because they do not have the practicality required by the patent law, are not patented in the patent laws of various countries. According to the number of people who have completed inventions, inventions can be divided into independent inventions and simultaneous inventions. According to the nationality of inventors, they can be divided into domestic inventions and foreign inventions. But the rights of applicants for invention patents are basically the same. According to the attribution of inventions, they can be divided into service inventions and non-service inventions; According to the dependence or restriction between inventions, they can be divided into basic inventions and improved inventions. The most common and basic classification in patent law is to divide inventions into product inventions and method inventions. China's patent law divides invention patents into three categories: product inventions, method inventions and improved inventions.