You can find any installed ICC profile from within the ColorSync utility. You'll see that Epson installs them in a package in the Library (for example, Library>Printers>EPSON>InketPrinter>ICCProfiles?Pro38.profiles/Contents/Resc)
I did already found those packages but how can I isolate the individual icm-profiles from it. As I wrote by that path I end up with a plugin and not with individual profiles.
You need to open the package (right click, Show Package contents). Look inside the resource folder.