Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8221797 | Wood preserving composition for treatment of in-service poles, posts, piling, cross-ties and other wooded structures | Jun Zhang, Douglas J. Herdman | 2012-07-17 |
| 4622248 | Preservative composition for wood | Robert M. Leach | 1986-11-11 |