Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7993756 | Long-chain quaternary ammonium compounds as wood treatment agents | Lehong Jin, Alan F. Preston, Kevin Archer, Futong Cui, Paul Walcheski | 2011-08-09 |
| 6274199 | Wood treatment process | Alan F. Preston, Futong Cui | 2001-08-14 |