Sorry, I meant the film business. They still make roofing material as you say, but I'm not sure about the floor tile.
A group of companies sued Kodak for coming out with the 3 step color paper process, and won. The interesting thing is that they then gradually all went pretty much out of business.
The irony is that the Ansco paper went through the Kodak 3 step process, contrary to their claims. I tested it.
The bottom line is this. If you sue Kodak and win, you are going to go out of business or suffer badly somehow or other. After all, look at Polaroid.
PE