Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10212894 | Modular vegetated roof system | Walter A. Hermann | 2019-02-26 |
| 9265200 | Modular vegetated roof system | Walter A. Hermann | 2016-02-23 |
| D698045 | Vegetated roof module | Walter A. Hermann | 2014-01-21 |
| 8479443 | Green roof system with biodegradable vegetation tray | — | 2013-07-09 |
| 5022928 | Thermoelectric heat pump/power source device | — | 1991-06-11 |
| 4859250 | Thermoelectric pillow and blanket | — | 1989-08-22 |
| 4467611 | Thermoelectric power generating device | John Logan Nelson, Robert Montgomery | 1984-08-28 |