Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5843222 | Modified cement and concrete compositions | Timothy J. Roth, William Russell Welliver | 1998-12-01 |
| 5639298 | Modified gypsum compositions | Timothy J. Roth, William Russell Welliver, John Robert Brown | 1997-06-17 |
| 5562767 | Manufactured aggregate composite | Timothy J. Roth, William Russell Welliver, Alexander Mishulovich, Mark S. Hudson | 1996-10-08 |
| 5365866 | Method and apparatus for treating exhaust gases from preheater and preheater/precalciner kilns burning hazardous waste fuels | H. Michael Von Seebach, Charles Lamb | 1994-11-22 |