Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10624272 | Tree punch and tree plug insertion tool | Michael Frisina | 2020-04-21 |
| 10462979 | Injection plug for insertion into a tree | Michael Frisina | 2019-11-05 |
| 8677683 | Injection tip for use with an injector for injecting liquid chemical into a tree | — | 2014-03-25 |
| 8677684 | Tree injection plug | Michael Frisina | 2014-03-25 |
| 8671614 | Injection tip for use with an injector for injecting liquid chemical into a tree | Michael Frisina | 2014-03-18 |
| 8664162 | Method for application of pesticides and plant growth regulators and nutrients to plants | — | 2014-03-04 |
| 8191308 | Chemical shell for insertion into a tree | — | 2012-06-05 |
| 7178286 | System and method for injecting trees | — | 2007-02-20 |
| 5797215 | Apparatus and method for retaining injection fluids in a tree | Mark O. Harrell | 1998-08-25 |
| 5239773 | Tree injection system | — | 1993-08-31 |