| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 4 | |
| #2 | United States | 4 | |
| #3 | Australia | 2 | |
| #4 | China | 2 | |
| #5 | Taiwan | 2 | |
| #6 | Germany | 1 | |
| #7 | Italy | 1 | |
| #8 | Republic of Korea | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Foundations and excavations | |
| #3 | Generating mechanical vibrations | |
| #4 | Unspecified technologies | |
| #5 | Knitting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Mo Jeon Jin | 6 |
| #2 | Sano Yuji | 5 |
| #3 | Shimada Fubito | 5 |
| #4 | Jin Jeon-Mo | 2 |
| #5 | Suzuki Hironari | 2 |
| #6 | Mo Jeon J | 2 |
| #7 | Tasaki Yasuo | 1 |
| #8 | Kumai Seizo | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP0627543A2 | Underground borer with down hammer. | |
| TW372257B | Down hammer | |
| EP0601687A1 | Boring apparatus | |
| AU4155993A | Cement soil apparatus of underground borer | |
| US5177386A | Vibration generator adjustable during operation |