Windows - Run process on background after closing cmd

I have a Python script which I want to run as a background process on Windows.

I can do that on Linux with:

python script.py &

and then discoect the process from the terminal with:

disown

On Windows, all I have so far is this:

start /b python script.py

However, if I close the CMD window, the script stops ruing. Is there any extra command that I am missing here to keep the script ruing on the background?