Top Inventors at Cardinal Industries All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Lucien R. Downing | 6 |
| 2 | Monica P. Subtirelu | 5 |
| 3 | Douglas R. Hagge | 3 |
| #4 | Keith E. Marty | 3 |
| #5 | Clifford V. Johnston | 2 |
| #6 | Dennis Volzke | 2 |
| #7 | Jeff Hanson | 2 |
| #8 | Kary Haar | 2 |
| #9 | Martin F. Strayer | 2 |
| #10 | Robert E. Thompson | 2 |
| #11 | William C. Boyles | 2 |
| #12 | C. V. Johnston | 1 |
| #13 | Joseph Richardelli | 1 |
| #14 | Ronald T. Collier | 1 |
| #15 | William Smith | 1 |
| #16 | Timothy J. Dannemiller | 1 |