Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8043478 | Retort heating apparatus | Michael Keller, Roger K. Noble | 2011-10-25 |
| 7718038 | Retort heating method | Michael Keller, Roger K. Noble | 2010-05-18 |
| 7264694 | Retort heating apparatus and methods | Michael Keller, Roger K. Noble | 2007-09-04 |
| 7229547 | Retort heating systems and methods of use | Michael Keller, Roger K. Noble | 2007-06-12 |
| 5196058 | Pavement construction composition and method therefor | — | 1993-03-23 |