Level 2 is a small invention. At this time, some components in the product system have changed, and dozens of parameters have changed, that is, the product has been qualitatively improved. In the process of innovation, we can use the knowledge of this industry to find innovative solutions by analogy with similar systems, such as hollow axe handles that can store nails. About 45% of invention patents belong to this level.
Level 3 is a medium-sized invention. Several components in the product system may undergo comprehensive changes, of which about hundreds of variables need to be improved. It needs to use knowledge outside the field, but it doesn't need to learn from other disciplines. Ballpoint pen, mountain bike, computer mouse and other inventions. About 19% of invention patents belong to the third level.
Level 4 is a great invention. It means that thousands or even tens of thousands of variables are needed to improve the situation of creating new things. It is generally necessary to quote new scientific knowledge instead of using scientific and technological information. Such an invention needs to be inspired by the knowledge of other disciplines to find a solution. About 4% of invention patents belong to the fourth-level inventions, such as internal combustion engines, integrated circuits and personal computers.
The highest level is a very big invention, which is level 5. Mainly refers to those scientific discoveries, generally new discoveries are made first, new knowledge is established, and then widely used. About 0.3% of invention patents belong to the fifth category of inventions. Such as steam engines, airplanes, lasers, etc.