You don't have to be the first one to invent something, to invent it.

It doesn't suddenly become imitation if you came up with it on your own.

Of course, but with nowadays available information and possibilities to search, it is quite easy to find that it is already done. I mean, I don't think she invented it being sitting in some cave, without contact to outside world. She would at least need to have done some simple research, with the materials and etc... So some organic results would pop up.

Interesting. More info here:

http://thermalforce.de/de/product/module/index.php

http://thermalforce.de/de/download/m101.pdf

ThermalForce says price is available upon request -- so it may be available for sale as a custom order. There are some other interesting products at that first link as well.