I'm assuming asking this question is ok since questions about kitchen equipment and cutlery are permitted.
So far I've only found steel plates that have a vertical edge. Do these vertical-edged plates have a specific name that I could search for, to check if they are available as a microwavable plates?
Most plates are pretty flat, which causes food to annoyingly go off the edge and onto the table.
Best Answer
With Duarte's help, I found the plates are:
There are also lipped edge plates, but it doesn't always satisfy the requirement of food not going off the edge.