Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4920025 | Control of selenium alloy fractionation | Gerald H. Sweatman, Roy Hodgson | 1990-04-24 |
| 4859411 | Control of selenium alloy fractionation | Gerald H. Sweatman, Roy Hodgson | 1989-08-22 |