Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5122338 | Hydrogen heat pump alloy combination | W. Edward Wallace, H. Kevin Smith, Raymond S. Craig | 1992-06-16 |
| 4928496 | Hydrogen heat pump | W. Edward Wallace, H. Kevin Smith, W. Bryan Lynch, Raymond S. Craig | 1990-05-29 |