If you are talking Teflon Protectors, as far as I'm aware, they don't market them themselves, but allow specialist manufacturers to use their raw materials to produce carpet/fabric protectors with Teflon. I believe that to use the Teflon name, strict standards have to be maintained.
From the past, I know that some Prochem products used Teflon, but I don't know if they still do.
Safe and happy cleaning
Ken