| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 2 | |
| #2 | Canada | 2 | |
| #3 | China | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | Hong Kong | 2 | |
| #6 | Republic of Korea | 2 | |
| #7 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Walker Thomas A | 11 |
| #2 | Means Stephen R | 11 |
| #3 | Smith Richard | 6 |
| #4 | Smith Richard K Jr | 5 |
| Publication | Filing date | Title |
|---|---|---|
| CA2655142A1 | Multi-sectional percussive drill bit assembly | |
| AU2006344400A1 | Multi-sectional percussive drill bit assembly |