Based on the world record nomination from Asia Records Institute (ASRI) and Decision No. WK/USA.INDIA/877/2022/No.333, World Records Union (WorldKings) officially recognizes Toshiba as the company produced world’s first automatic electric rice cooker on July 23rd, 2022.
Toshiba Corporation, commonly known as Toshiba and stylized as TOSHIBA, is a Japanese multinational conglomerate headquartered in Minato, Tokyo, Japan.
Its diversified products and services include power, industrial and social infrastructure systems, elevators and escalators, electronic components, semiconductors, hard disk drives (HDD), printers, batteries, lighting, as well as IT solutions such as quantum cryptography.
The development of electric rice cookers began in the Taisho era (1912-1926), but it wasn't until 1955 that the first automatic rice cooker for household use went on sale in Japan. The company that made this cooker, Toshiba, spent five years developing it. After much trial and error, the company came up with a method called "double-pot indirect cooking," in which a cup of water was poured into the outer pot, and the machine automatically turned off when all of this water evaporated, signaling that the rice was ready.
The Toshiba Automatic Rice Cooker model ER-4, designed by Iwata Yoshiharu, was the first successfully mass-produced rice cooker, transforming rice-cooking into a fully automated procedure from the old method that needed constant attendance.
This meant that people could eat freshly cooked rice for breakfast simply by setting the timer the previous night, and they could keep the rice hot and tasty even after it was cooked. Next, in an effort to make rice from rice cookers more delicious, makers introduced computer-controlled rice cookers, which regulated the temperature inside the cooker using a tiny computer. These were first introduced in 1979.
According to wikipedia