Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4950551 | Gas barrier layer for metallic and nonmetallic materials | Richard Doetzer | 1990-08-21 |
| 4948475 | Ion barrier layer on metals and nonmetals | Richard Doetzer | 1990-08-14 |