Top Inventors at Koppers Performance Chemicals All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Jun Zhang | 18 |
| 2 | John Horton | 7 |
| 3 | Peter Tham | 5 |
| #4 | Robert M. Leach | 5 |
| #5 | Xinhao H. Gao | 4 |
| #6 | Md Sayful Islam | 2 |
| #7 | Min Kuang | 2 |
| #8 | Richard Ziobro | 2 |
| #9 | H. Wayne Richardson | 1 |
| #10 | Nigel Paul Maynard | 1 |
| #11 | Robert L. Hodge | 1 |