Hi SKR90, one possibility could be to use Construct > Offset to make offset curves, then Edit > Trim to cut the surfaces into separate pieces. This is a little easier if your curves are perpendicular to the border edges at their ends because then all the offsets will just naturally line up with each other.

Check out the attached model example, I have modified your curves a little on this one so each one ends perpendicular to the edge.

- Michael