Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6972047 | Incorporation of gilsonite into asphalt compositions | James R. Butler, Kevin Kelly, Paul Buras | 2005-12-06 |
| 6956071 | Use of alternate thiol accelerators for crosslinking rubber in asphalt | James R. Butler | 2005-10-18 |
| 6756718 | Positioning structure for air fan induction element and stator | — | 2004-06-29 |
| 6709229 | Bi-directional incoming air flow fan | — | 2004-03-23 |
| 6632022 | Coupling structure for bearing and bushing | — | 2003-10-14 |
| 6376946 | D.C. brushless air fan with an annular oil trough | — | 2002-04-23 |