Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8454729 | Micro-irrigation device, system, and method for plant-based cleaning of indoor air and filter bed bioregeneration | Martin Mittelmark | 2013-06-04 |
| 8083835 | Micro-irrigation device, system, and method for plant-based cleaning of indoor air and filter bed bioregeneration | Martin Mittelmark | 2011-12-27 |
| 6230437 | Plant stand | John D. Wolverton, Hiroharu Mizukoshi | 2001-05-15 |
| 5433923 | Indoor humidifier and air purifier | John D. Wolverton | 1995-07-18 |
| 5351438 | Planter container for indoor air purification | John D. Wolverton | 1994-10-04 |
| 5269094 | Apparatus for purifying waste water and air in an indoor environment | John D. Wolverton | 1993-12-14 |
| 5217696 | Combined lamp and indoor air purification apparatus | John D. Wolverton | 1993-06-08 |
| 5137625 | Aquatic plant/microbial water purification system | — | 1992-08-11 |
| 4959084 | Combined air and water pollution control system | Lamont R. Jarrell | 1990-09-25 |
| 4415450 | Method for treating wastewater using microorganisms and vascular aquatic plants | — | 1983-11-15 |