| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 4 | |
| #2 | China | 3 | |
| #3 | EPO (European Patent Office) | 2 | |
| #4 | United States | 2 | |
| #5 | Australia | 1 | |
| #6 | Republic of Korea | 1 | |
| #7 | Taiwan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Mining | |
| #2 | Milling | |
| #3 | Earth drilling | |
| #4 | Dredging |
| # | Name | Total Patents |
|---|---|---|
| #1 | Saito Yoshitaka | 8 |
| #2 | Saito Sumitaka | 2 |
| #3 | Shimomukai Akihiro | 2 |
| #4 | Sumitaka Saito | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CN111433428A | Rock drilling device enabling multiple operation modes | |
| KR20100114744A | Casting runner crushing device | |
| TW201036734A | Runner crushing device | |
| WO2007144953A1 | Device and method for digging cave and pit |