Technology transfer: It can be transferred to many companies such as A, B, C, D, etc., and everyone can use it. As long as someone pays, theoretically there is no upper limit on the income. At the same time, the risk is also very high, and the technology is backward. After it is innovated or copied, no one will buy it and you will not receive a penny.
Patent sales: Once you sell it, it is gone. It has nothing to do with you. You can take a lump sum of money and leave. , no risk, fixed income
From this aspect we can draw a conclusion