Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| PP12549 | Hamamelis mollis plant named ‘5473’ | — | 2002-04-16 |
| PP12100 | Hamamelis virginiana plant named `November Glow` | — | 2001-09-18 |
| PP12079 | Viburnum dentatum plant named `October Glory` | — | 2001-09-04 |
| PP11055 | Forsythia hybrid plant named `Princeton Gold` | — | 1999-09-07 |
| PP10989 | Prunus sargentii plant named `Princeton Snowcloud` | — | 1999-06-29 |
| PP10557 | Maackia amurensis plant named `Starburst` | — | 1998-08-18 |
| PP10481 | Clethra alnifolia plant named `September Beauty` | — | 1998-07-07 |
| PP9093 | Quercus palustris `Pringreen` | — | 1995-03-28 |
| PP7731 | Robinia `Purple Crown` | — | 1991-12-03 |
| PP7217 | "Acer palmatum ""Crimson Prince""" | — | 1990-04-10 |
| PP7203 | "Amelanchier laevis ""Majestic""" | — | 1990-03-27 |
| PP7147 | Malus hupehensis named `Cardinal` | — | 1990-02-13 |
| PP7072 | "Amelanchier candensis ""White Pillar""" | — | 1989-12-12 |
| PP6727 | Princeton gold | — | 1989-04-11 |
| PP5800 | Flowering Crab Apple Tree | — | 1986-11-18 |
| PP5730 | Flowering cherry tree | — | 1986-04-29 |
| PP5524 | Sophora japonica Princeton Upright | — | 1985-07-30 |
| PP5080 | Zelkova serrata tree | — | 1983-08-02 |
| PP4632 | Flowering crab apple tree | — | 1981-01-27 |
| PP4540 | Prunus subhirtella | — | 1980-05-27 |