Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5166251 | Drawable corrosion inhibiting coating | L. Donald Barrett, Burkhard Flamme, Dale Hahn | 1992-11-24 |
| 5047451 | Welding corrosion inhibiting coating | L. Donald Barrett, Dale Hahn, Richard Ziegler | 1991-09-10 |
| 4544581 | Black corrosion resistant coating and method for a metal substrate | — | 1985-10-01 |