Toshiko Takaezu (June 17, 1922-March 9, 2011) was a Japanese-American ceramist and painter whose closed forms helped to elevate ceramics from functional to fine art.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Toshiko_Takaezu

Untitled by Toshiko Takaezu
c.1990-1999 / Glazed stoneware / 14-1/2″x6-1/2″ / Art Institute of Chicago, IL

Toshiko Takaezu on Artnet: http://www.artnet.com/artists/toshiko-takaezu/

Further reading:
https://www.groundsforsculpture.org/artists/toshiko-takaezu/
https://artmuseum.princeton.edu/object-package/toshiko-takaezu/29673
https://www.toshikotakaezufoundation.org/about-toshiko