Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6256944 | Method and system for keeping water from entering dispenser containment sumps | Michael S. Butkovich, Albert J. Kovach, Charles M. Daul | 2001-07-10 |
| 6113820 | Method to repair polyethylene containment sumps | Albert J. Kovach, Paul A. Sivak, Charles M. Daul | 2000-09-05 |
| 6074131 | Method for installing form in-place dispenser containment | Charles M. Daul, Paul A. Sivak, Albert J. Kovach | 2000-06-13 |
| 6050050 | Form in-place submersible pump containment | Charles M. Daul, Paul A. Sivak, Albert J. Kovach | 2000-04-18 |
| 5983916 | Upgrade of below grade fill to at grade fill | Charles M. Daul, Paul A. Sivak, Albert J. Kovach | 1999-11-16 |
| 5186904 | Laboratory simulator of reactor for a petroleum refinery | Robert D. Buttke, James L. Taylor, William M. Hall | 1993-02-16 |
| 5100855 | Mixed catalyst system for hyproconversion system | Frederick T. Clark, Albert L. Hensley, Jr. | 1992-03-31 |
| 5009771 | Hydroconversion process using mixed catalyst system | Frederick T. Clark, Albert L. Hensley, Jr., Lawrence B. Peck | 1991-04-23 |