Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| PP35109 | Malus plant named ‘Jefwall’ | — | 2023-04-18 |
| PP35089 | Crabapple plant named ‘Jefnite’ | — | 2023-04-11 |
| PP33092 | Physocarpus plant named ‘Jefroy’ | — | 2021-05-25 |
| PP31663 | Dasiphora plant named ‘Jefmarm’ | — | 2020-04-14 |
| PP30331 | Syringa plant named ‘Jeflady’ | Rick Durand | 2019-04-02 |
| PP29830 | Dasiphora plant named ‘Jefman’ | — | 2018-11-13 |
| PP27402 | Cornus plant named ‘Jefreb’ | — | 2016-11-22 |
| PP23863 | Malus tree named ‘Jefgreen’ | — | 2013-09-03 |
| PP12232 | Linden tree named `Harvest Gold` | James Richard Durand | 2001-11-27 |
| PP11840 | Hybrid ash tree named `Northern Treasure` | Campbell G. Davidson | 2001-04-24 |
| PP11777 | Hybrid ash tree named `Northern Gem` | Campbell G. Davidson | 2001-02-13 |
| PP8239 | Little leaf linden--Ronald cultivar | — | 1993-05-25 |