I can't find the aMES patent but found the link below:
https://themarketherald.com.au/parkway-minerals-asxpwn-busy-quarter-built-on-ames-tech-2020-04-17/
"The new process treats concentrated brine solutions to recover a range of valuable minerals, reagents and fresh water using patented membrane technology. "
PWN acquired aMES from unlisted Consolidated Potash Corporation.
Patented membrane technology sounds very different to what RWD has said to date.
The link you mention is interesting but I reckon the the only thing RWD and PWN have in common is they both know that flotation is unlikely to be successful and economic at the same time. Let's hope that RWD can move forward with their tech at a faster pace than PWN.
Bumper day, page-19
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