Japanese Tea Sets from the 40s/50s

I have 3 tea sets that were given to me by my Mother-in-law (age 89), who got them from HER father. The one that has red cups and red tops on the little bowls is marked on the bottom. it says:

Noritake with an uppercase 'N' surrounded by a circle of 2 branches

Under that it says Nippon Toki Kaisha and 'Japan'

Another set is generally gray-ish with a dragon motif. No markings on the bottoms.

The last set is reddish brown, rimmed with gold. There are hand -painted figures on the cups, saucers and plates. On the teapot and sugar and creamer there are also hand-painted figures with a dragon wrapping around. The dragon's head is the lifter for the lid.