Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4657067 | Hypereutectic direct-contact thermal storage material and method of production thereof | Robert A. Rapp | 1987-04-14 |
| 4397686 | Method for refining precious metals | Louis T. Winkler, John D. Goins, George R. St. Pierre, Craig B. Shumaker | 1983-08-09 |