| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 3 | |
| #2 | Brazil | 2 | |
| #3 | Canada | 1 | |
| #4 | China | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | United Kingdom | 1 | |
| #7 | Japan | 1 | |
| #8 | Republic of Korea | 1 | |
| #9 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Percussive tools | |
| #2 | Turning | |
| #3 | Hand-held nailing tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Stewart David W | 11 |
| Publication | Filing date | Title |
|---|---|---|
| GB0908018D0 | Seadbed mounted methane gas hydrate exploitation apparatus | |
| BRPI0215857E2 | hammer and hammer head that has a front puller | |
| US2006214145A1 | Hammer and hammer head having a frontal extractor | |
| BR0215857A | Hammer and hammerhead that has a front puller and surface nail extraction method | |
| EP1539632A1 | Hammer and hammer head having a frontal extractor | |
| KR20050058455A | Hammer and hammer head having a frontal extractor |