| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 3 | |
| #2 | Argentina | 2 | |
| #3 | New Zealand | 2 | |
| #4 | United States | 2 | |
| #5 | Brazil | 1 | |
| #6 | Canada | 1 | |
| #7 | Colombia | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Peru | 1 | |
| #10 | Taiwan | 1 | |
| #11 | WIPO (World Intellectual Property Organization) | 1 | |
| #12 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Hydraulic engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Knight David W | 10 |
| #2 | Knight David | 5 |
| Publication | Filing date | Title |
|---|---|---|
| US6071041A | Revetment block | |
| US5906456A | Revetment system |