| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 2 | |
| #2 | EPO (European Patent Office) | 2 | |
| #3 | Mexico | 2 | |
| #4 | United States | 2 | |
| #5 | WIPO (World Intellectual Property Organization) | 2 | |
| #6 | Canada | 1 | |
| #7 | Chile | 1 | |
| #8 | China | 1 | |
| #9 | Peru | 1 | |
| #10 | Russian Federation | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Shafts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Jordaan Barend Jacobus | 13 |
| #2 | Goodwin Nicolaas Bodenstein | 13 |
| #3 | Germishuys Louis | 12 |
| #4 | Pretorius Daniel Coenraad | 12 |
| #5 | Pretorius Gerhard | 8 |
| #6 | Kleuters Nikolaus | 4 |
| #7 | Sheppard Gareth Robert | 4 |
| #8 | Louis Germishuys | 2 |
| #9 | Nicolaas Bodenstein Goodwin | 2 |
| #10 | Daniel Coenraad Pretorius | 2 |
| Publication | Filing date | Title |
|---|---|---|
| WO2020121212A1 | Cutter head arrangement | |
| CN110023586A | Shaft enlargement device for hole-drilling system |