Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8986461 | De-carbonizing process for combustion component cleaning | Mark E. Hischier | 2015-03-24 |
| 5105887 | Enhanced oil recovery technique using hydrogen precursors | Leonard J. Kalfayan | 1992-04-21 |
| 5051197 | Scale removal treatment | Leonard J. Kalfayan, David R. Watkins | 1991-09-24 |
| 5039434 | Acidizing composition comprising organosilicon compound | David R. Watkins, Leonard J. Kalfayan | 1991-08-13 |
| 4992182 | Scale removal treatment | Leonard J. Kalfayan, David R. Watkins | 1991-02-12 |
| 4787453 | Permeability stabilization in subterranean formations containing particulate matter | David R. Watkins, Leonard J. Kalfayan | 1988-11-29 |
| 4708207 | Scale removal treatment | Leonard J. Kalfayan, David R. Watkins | 1987-11-24 |
| 4646835 | Acidizing method | David R. Watkins, Leonard J. Kalfayan | 1987-03-03 |