Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4321128 | Phosphorus passivation process | — | 1982-03-23 |
| 4319983 | Passivation process | — | 1982-03-16 |
| 4318799 | Combination of aluminum and phosphorus passivation process | — | 1982-03-09 |
| 4317713 | In situ aluminum passivation process | Emmett H. Burk, Jr., John A. Karch | 1982-03-02 |
| 4295858 | Process for removing sulfur from coal | Jui-Yuan Sun, Emmett H. Burk, Jr., George P. Masologites | 1981-10-20 |
| 4293403 | Catalyst demetallization by converting the metal poisons to a sulfur containing metal compound having a defined low amount of sulfur | Emmett H. Burk, Jr., John A. Karch, Jui-Yuan Sun | 1981-10-06 |
| 4267032 | Demetallization process for a conversion catalyst | Emmett H. Burk, Jr., John A. Karch, Jui-Yuan Sun | 1981-05-12 |
| 4261699 | Process for removal of sulfur and ash from coal | Jui-Yuan Sun, Emmett H. Burk, Jr., George P. Masologites | 1981-04-14 |
| 4255156 | Process for removal of sulfur and ash from coal | Jui-Yuan Sun, Emmett H. Burk, Jr., George P. Masologites | 1981-03-10 |
| 4249910 | Process for removing sulfur from coal | George P. Masologites, Jui-Yuan Sun, Emmett H. Burk, Jr. | 1981-02-10 |
| 4243550 | Catalyst demetallization with a reductive SO.sub.2 wash | Emmett H. Burk, Jr., John A. Karch, Jui-Yuan Sun | 1981-01-06 |
| 4234452 | High pressure oxygen aqueous phase catalyst demetallization | Emmett H. Burk, Jr., Jui-Yuan Sun, John A. Karch | 1980-11-18 |
| 4224038 | Process for removing sulfur from coal | George P. Masologites, Emmett H. Burk, Jr., John A. Karch | 1980-09-23 |
| 4204840 | Process for removing sulfur from coal | Emmett H. Burk, Jr., John A. Karch | 1980-05-27 |
| 4198291 | Float-sink separation of coal with liquid SO.sub.2 | Emmett H. Burk, Jr. | 1980-04-15 |
| 4197090 | Process for removing sulfur from coal | Emmett H. Burk, Jr., John A. Karch | 1980-04-08 |