While NHL Commissioner Gary Bettman has so far refused to allow sponsor ad logos on NHL game sweaters, he has been open to allow such ads on players' helmets.
https://profootballtalk.nbcsports.co...0&h=316&crop=1
This idea has now become reality as, for the 2020-21 season, New Jersey, Washington and Nashville have announced that they will add the sponsor logos to player helmets. (New Jersey Devils helmet and logo shown in photo.)
Dave Miedema