When Namco entered the home video games market in the 1980's, releases were credited to "Namcot" - a separate division of Namco created to handle this area.
Namco started out in 1955 as a kiddie ride manufacturer named Nakamura Manufacturing. They mostly created rocking horses and miniature train rides, some of which used Disney characters.
Since 1995, Namco Bandai owned a patent on having a playable minigame during loading screens. The patent expired in 2015.