Last july, an article was published in Nature for a new high viscosity vat printing method, https://doi.org/10.1038/s41467-023-39913-4
This method is depicted below, the figure is copied from the article.

It uses four rollers to apply a new layer to 3d print a part. The article comes with some cool videos and equations describing the mechanism.

The method, and this is not mentioned in Nature is not entirely new, see patent EP2272653A1. The only difference i can see from a legal perspective is recoater number 2. I also remember it is not a true vat method. Resin went to a waste box, see number 23.  I think the Admatec machine is a spinoff from this concept. It also uses a a rotating foil, coated with a blade and the remainder is put into a left over box.

Furthermore, in my white paper on reprap,  i claim the usage of a foil with my Prism scanner.  I made two drawings to protect up and down projection.

I think the authors of the nature article should consider the following  two patents;
     US8777602B2 (recoater patent)

Loophole might be not using recoater. 

     US9939633B2  (scanlab, EOS subsidiary patent, reflecting lens)

Their reflecting lens seems very similar to scanlab. The authors mention the 3SP patent, so I did not include it.