Samsung is already seling a flat disc device for charging your Galaxy device wirelessly, but in the near future a charger could support more than one device at once.
Recently uncovered wireless charger patents
show three three different designs. Instead of the current round disc that Samsung sells, the new devices are larger and obviously more powerful, as they could charge a phone and/or tablet alongside a smartwatch.
The filing was recently published by the U.S. Trademark and Patent Office after an original submission in January.