This is the image Josh posted from Eon Website, I can't access the website right now for some reason.
And here is the page from Yihao website showing the same formulas (in Chinese of course): http://www.yihaometal.com/?p=9129 Note: Yihao does not have Eon's Z3 formula listed on their website. Note sure why, perhaps this is specialized to only Eon.
Eon's Q&A has stated that there are no patents for these formula's (as Josh correctly pointed out) because the material formulations and process to develop are so highly specialized, there is not a need for patents. (this was response from Eon)