Top Inventors at Phelps Dodge All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | John O. Marsden | 22 |
| 2 | David R. Baughman | 18 |
| 3 | Joanna M. Robertson | 18 |
| #4 | Robert E. Brewer | 18 |
| #5 | Wayne W. Hazen | 18 |
| #6 | Philip Thompson | 17 |
| #7 | Roland Schmidt | 7 |
| #8 | Christel M. A. Bemelmans | 6 |
| #9 | Scot P. Sandoval | 6 |
| #10 | Timothy G. Robinson | 6 |
| #11 | Stanley Gilbert | 4 |
| #12 | Antonioni C. Stevens | 4 |
| #13 | Donald P. Satchell, Jr. | 3 |
| #14 | Jean-Louis Huens | 3 |
| #15 | Peter Peckham | 3 |
| #16 | Paul Richard Cook | 2 |
| #17 | Brent E. McEuen | 1 |
| #18 | David Arana | 1 |
| #19 | David Castanon | 1 |
| #20 | Donald W. Treadaway | 1 |
| #21 | Frank Aragon | 1 |
| #22 | Gregory E. Collins | 1 |
| #23 | James E. Hanson | 1 |
| #24 | Jennifer D. Carpenter | 1 |
| #25 | Jose G. Cruz | 1 |
| #26 | John Gerlach | 1 |
| #27 | John Schneider | 1 |
| #28 | Mark W. Bartlett | 1 |
| #29 | Phillip Thompson | 1 |
| #30 | Ramon G. Jaramillo | 1 |
| #31 | Robert D. Coyle | 1 |
| #32 | Russell Armbrust | 1 |
| #33 | Steven Holmes | 1 |
| #34 | Steve Williamson | 1 |
| #35 | Terrell D. Jackson | 1 |
| #36 | Wesley P. Hoffman | 1 |
| #37 | William J. Gordon | 1 |
| #38 | H. E. Dunham | 1 |
| #39 | George W. Pepple | 1 |
| #40 | Galen W. Clevenger | 1 |