Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 7467943 | Method for combusting fuel in a fired heater | M. Shannon Melton, Donald F. Zetik, Sr., Dan Loveless, John Z. Varesic, John Brinly +1 more | 2008-12-23 | |
| 4990241 | Hydrotreating process to minimize catalyst slumping | Robert D. Buttke, Robert E. Boening | 1991-02-05 | $26,018,000 |
| 4986222 | Furnace for oil refineries and petrochemical plants | John Z. Varesic, M. Shannon Melton, Sidney H. Melton | 1991-01-22 | $71,080,000 |