Arcus has patents on the implementation of b+tree smget operation like below.

| Nation | Number | Title | Status |

| ------------- | --------------- | ------------------- | ---------- |

| United States | 13/474,382 | Multiple Range Scan | registered |

| Korea | 10-2011-0054384 | Multiple Range Scan | applied |

| Japan | 2012-092668 | Multiple Range Scan | applied |