Houweling’s has a rich history of innovation in the greenhouse industry both in North America and Internationally. These are some our patents held.
| COUNTRY | TITLE | PATENT NO. | ISSUED |
| ULTRA CLIMA | |||
| U.S. | GREENHOUSE AND FORCED GREENHOUSE CLIMATE CONTROL SYSTEM AND METHOD | 8,707,617 | Issued 04/29/2014 |
| CANADA | GREENHOUSE AND FORCED GREENHOUSE CLIMATE CONTROL SYSTEM AND METHOD | 2592674 | Issued 07/23/2013 |
| EUROPE | GREENHOUSE AND FORCED GREENHOUSE CLIMATE CONTROL SYSTEM AND METHOD | 2031957 | Issued 10/16/2013 |
| ISRAEL | GREENHOUSE AND FORCED GREENHOUSE CLIMATE CONTROL SYSTEM AND METHOD | 193844 | Issued 08/29/2013 |
| MEXICO | GREENHOUSE AND FORCED GREENHOUSE CLIMATE CONTROL SYSTEM AND METHOD | MX 327463 B | Issued 01/30/2015 |
| NEW ZEALAND | ULTRA CLIMA CLOSED-LOOP ENERGY DRYING SYSTEM | 611982 | Issued 09/29/2015 |
| “TUBE IN TUBE” | |||
| AUSTRALIA | GREENHOUSE AND FORCED GREENHOUSE CLIMATE CONTROL SYSTEM AND METHOD | 2010328690 | |
| NEW ZEALAND | GREENHOUSE AND FORCED GREENHOUSE CLIMATE CONTROL SYSTEM AND METHOD | 599383 | Issued 12/13/2013 |
| MEXICO | GREENHOUSE AND FORCED GREENHOUSE CLIMATE CONTROL SYSTEM AND METHOD | MX 327532 B | Issued 04/02/2015 |