Stew,
I've heard several call it a re-curve, but I see it as a compound grind. The long primary edge is generally hollow ground, probably with a good sized wheel. The point or tip area is then ground either flat or hollow with a smaller wheel or with a lower grind line, all so it is thicker and sturdier for punching and poking. It's all sort of an evolution of the Americanized tanto that Lum started back in the 80s.
To make it you would hollow grind the edge as usual, except that you have a stopping point at the tip end as well as at the rear. It gets tricky when you have a short blade that allows little movement back and forth. The point area is then ground separately. Another way to grind it is to do the edge hollow grinding in a normal fashion with it running off the tip end and not stopping, then come in a grind the point area.
Design wise, most have an edge that is concave, but sometimes you see straight or convex edges. Most have large point areas. Some are huge, being almost half of a blade. Others are small.
Attached are pictures of my take on this grind. The smaller fixed blade and the folder have primary edges that change angles. The sub hilt has both a concave and a slightly convex primary edge. I ran my bevels off the tip end, then flat ground the tips for punching strength. The top grinds on both fixed blades have stopping points at both ends, with the grind lines lower at the rear. That drove me nuts!
Hope this helps.
David