Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5798088 | Method for producing elemental sulfur from sulfur-containing gases | Thomas P. Dorchak, Santosh K. Gangwal | 1998-08-25 |
| 5428907 | Downcomer and flapper valve | John L. Haslbeck, Carroll H. Sherman | 1995-07-04 |
| 5366717 | Method for producing elemental sulfur from sulfur-containing gases | Thomas P. Dorchak, Santosh K. Gangwal | 1994-11-22 |