Proprietary eponyms. That's the actual term to describe words that are brand names that have actually become 'regular' names of certain products.
There are a couple of relatively well-known ones that Singaporeans use. Pampers. Tupperware. Post-it Notes. Scotch Tape. Velcro. Yes, these are all technically trademarked brand names, but most of us probably just know them as the name of the thing that we use.
Anyway I recently watched Marty Supreme, a show that's about table tennis. Or pi