Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5665902 | Method to analyze particle contaminants in compressed gases | Hwa-Chi Wang | 1997-09-09 |
| 5618996 | Metal sampling method and system for non-hydrolyzable gases | Hwa-Chi Wang | 1997-04-08 |