What patented technologies do listed companies have?

Listed companies don't necessarily have patented technology, and companies with patented technology are not necessarily listed companies. Many listed companies do not have so-called patented technology, and only scientific listed companies can have patented technology. Patented technology is not necessarily related to whether it can be listed. In a narrow sense, initial public offering (IPO) refers to the process that an enterprise issues shares to investors for the first time through a stock exchange in order to raise funds for enterprise development.