Well Dan, That's not something he could patent. Lots of people are using it.
It's the green compound that you can get anyplace that sells industrail buffing supplys.
By a big bar of it and break a chunk off and smash it up. Put it in a ketchup type bottle and mix it with paint thinner. the mineral sprites kind. Mix it up real good so it's kinda pasty and you've got it. I've been using it for years myself.