Top Inventors at R.R. Donnelly & Sons All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | James L. Warmus | 2 |
| 2 | Bobby Chang | 1 |
| 3 | Dennis R. Hughes | 1 |
| #4 | Mark G. Dreyer | 1 |
| #5 | Robert E. Davis | 1 |
| #6 | Robert W. Gill | 1 |
| #7 | Roger Kitzmiller | 1 |
| #8 | Thomas E. Ramsey | 1 |
| #9 | Allen Hartsoe | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | James L. Warmus | 2 |
| 2 | Bobby Chang | 1 |
| 3 | Dennis R. Hughes | 1 |
| #4 | Mark G. Dreyer | 1 |
| #5 | Robert E. Davis | 1 |
| #6 | Robert W. Gill | 1 |
| #7 | Roger Kitzmiller | 1 |
| #8 | Thomas E. Ramsey | 1 |
| #9 | Allen Hartsoe | 1 |