Lou Ottens (1926–2021), inventor of the cassette tape
Lou Ottens was a Dutch engineer who invented the cassette tape, one of the most popular music formats of the 1970s, ‘80s, and ‘90s.Ottens was working for Royal Philips in the 1960s, when the primary formats for recordings were vinyl records and reel-to-reel tapes. Both were clunky and not easily portable, though the reel-to-reel had the advantage of being recordable and rerecordable, not just for playback.