Yes, the details should've been made public. In order for that patent to have issued, they couldn't have kept secret the ingredients or even what proportions of combinations they're in, otherwise it'd fail the "best mode" requirement of implementation. A patented item must allow the reasonably skilled person in that field of art to follow the instructions and recreate it. That doesn't stop them from burying the "actual" best mode amongst other feasible modes, however. A very cursory look at the patent shows 22 slightly varying, different composition of matters that would qualify as the invention...