The company you work for on whose time you invent something that is granted a patent should give a revocable license to your employer but the inventor should ne

The company you work for on whose time you invent something that is granted a patent should give a revocable license to your employer but the inventor should never have to give up the patent to the employer. Unfortunately that's how it's handled in most places and a reason why many do not submit stuff to patent lawyers in the company. I'm curious how this works in the US with IBM creating at least one patent a day.