Shozo Michikawa produces these slab-like pots in Japan. They are displayed and sold all over the world. His core fans appear to be Europeans, judging by various art sites I scanned after coming across a glossy image of Michikawa's work in Apollo, the London-based "international magazine for collectors."
According to Galerie Besson, "Though his techniques are diverse, Michikawa always strives to create ‘functional’ pieces. He writes, "no matter how styles change I always insist on creating pieces that can actually be used. Pottery was originally an integral part of people's lives.”
Above, the potter and his workshop in Seto, Aichi, Japan.