| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 2 | |
| #2 | WIPO (World Intellectual Property Organization) | 2 | |
| #3 | Brazil | 1 | |
| #4 | Canada | 1 | |
| #5 | China | 1 | |
| #6 | Czechia | 1 | |
| #7 | EPO (European Patent Office) | 1 | |
| #8 | Finland | 1 | |
| #9 | Mexico | 1 | |
| #10 | Norway | 1 | |
| #11 | New Zealand | 1 | |
| #12 | Poland | 1 | |
| #13 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Horticulture |
| # | Name | Total Patents |
|---|---|---|
| #1 | Leerdam Frans | 14 |
| #2 | Van Zanten Evert | 8 |
| #3 | Zanten Evert Van | 6 |
| #4 | Leerdam F | 1 |
| #5 | Zanten E Van | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CN1180293A | Method for preparing open-celled growing media and growing media | |
| AU1591995A | A method for preparing a plug of open celled growing material and plug of growing material |