Patent is a negotiated monopoly between the inventors and the government. One key requirement is the public disclosure of the "elements" of the novel and non-obvious inventions. I can hardly see any reasons to hide the patentable "elements" from the public when disclosing the invention, let alone hiding it from the patent attorney who will be prosecuting the application. Trade secret is a better venue for hiding the "elements", but not patents. U.S. patent law is different from the Chinese patent law in certain aspects. But the cores are the same.