Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6536090 | Method for making a cryogenic tank joint | Walter Franklin, David Hooke | 2003-03-25 |
| 6321930 | Cryogenic tank joint | Walter Franklin, David Hooke | 2001-11-27 |
| 6290086 | Cryogenic tank joint | Walter Franklin, David Hooke | 2001-09-18 |