| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 4 | |
| #2 | Mexico | 4 | |
| #3 | Australia | 3 | |
| #4 | Brazil | 3 | |
| #5 | EPO (European Patent Office) | 3 | |
| #6 | Norway | 3 | |
| #7 | WIPO (World Intellectual Property Organization) | 3 | |
| #8 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling |
| # | Name | Total Patents |
|---|---|---|
| #1 | King Charles H | 19 |
| #2 | Pinckard Mitchell D | 18 |
| #3 | Proehl Thomas S | 7 |
| #4 | Krishnamoorthy Kalimuthu | 7 |
| #5 | Sparling Donald P | 6 |
| #6 | Benton Denise F | 4 |
| #7 | Haci Marc | 3 |
| #8 | Op De Weegh Arno | 3 |
| #9 | Weegh Arno Op De | 3 |
| #10 | Maidla Eric E | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US6918453B2 | Method of and apparatus for directional drilling | |
| US6802378B2 | Method of and apparatus for directional drilling | |
| AU4754202A | Instrumented cementing plug and system |