10 inventors who didn’t get mega-rich from their inventions


  • 3M sell billions of Post-It Notes each year but its inventors describe themselves as “comfortably off” not wealthy.
  • Inventor Trevor Baylis (Wind-up radio) recently said he can no longer afford to live in his home in Twickenham, London, because despite millions of sales around the globe…
  • Japanese businessman Daisuke Inoue (Karaoke machine)…He didn’t patent his invention and barely made a yen.