Top Inventors at Rotech Group Limited All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Kenneth Roderick Stewart | 13 |
| 2 | Donald Stewart | 6 |
| 3 | Donald MacLeod Stewart | 4 |
| #4 | Hector Van Drentham-Susman | 3 |
| #5 | Hector Fillipus Alexander Van Drentham Susman | 2 |
| #6 | David Thompson | 1 |
| #7 | Gary L. Harris | 1 |
| #8 | Hector Filippus Alexander Van Drentham-Susman | 1 |
| #9 | Richard D. Neilson | 1 |