Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6585933 | Method and composition for inhibiting corrosion in aqueous systems | William C. Ehrhardt, Longchun Cheng, Dawn Stasney | 2003-07-01 |
| 6187262 | Inhibition of corrosion in aqueous systems | Longchun Cheng | 2001-02-13 |