Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10760238 | Protective pole cap | Douglas J. Herdman, David Smith | 2020-09-01 |
| 10227747 | Protective pole cap | Douglas J. Herdman, David Smith | 2019-03-12 |
| 10085453 | Controlled release, wood preserving composition with low-volatile organic content for treating in-service utility poles, posts, pilings, cross-ties and other wooden structures | Douglas J. Herdman, Jun Zhang, Thomas Pope | 2018-10-02 |
| 9808015 | Controlled release, wood preserving composition for treating in-service utility poles, posts, pilings, cross-ties and other wooden structures | Douglas J. Herdman, Jun Zhang, Thomas Pope | 2017-11-07 |
| 9593245 | Controlled release, wood preserving composition with low-volatile organic content for treating in-service utility poles, posts, pilings, cross-ties and other wooden structures | Douglas J. Herdman, Jun Zhang, Thomas Pope | 2017-03-14 |
| 9464196 | Controlled release, wood preserving composition with low-volatile organic content for treating in-service utility poles, posts, pilings, cross-ties and other wooden structures | Douglas J. Herdman, Jun Zhang, Thomas Pope | 2016-10-11 |
| 9303169 | Controlled release, wood preserving composition with low-volatile organic content for treatment in-service utility poles, posts, pilings, cross-ties and other wooden structures | Douglas J. Herdman, Jun Zhang, Thomas Pope | 2016-04-05 |