| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 8 | |
| #2 | China | 2 | |
| #3 | Republic of Korea | 2 | |
| #4 | WIPO (World Intellectual Property Organization) | 2 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Nails | |
| #2 | Soldering, welding and flame cutting | |
| #3 | Making screws | |
| #4 | Forging | |
| #5 | Making forged metal products |
| # | Name | Total Patents |
|---|---|---|
| #1 | Yamazaki Tadatsugu | 8 |
| #2 | Yamazaki Tadayoshi | 7 |
| #3 | Yamazaki Kazuki | 7 |
| Publication | Filing date | Title |
|---|---|---|
| JP2014169793A | Lock fastening member or lock washer | |
| JP2013148220A | Locking bolt and method of manufacturing the same | |
| JP2014029200A | Looseness preventive bolt | |
| JP2013024418A | Lock bolt and method of manufacturing the same | |
| JP2013024253A | Lock bolt and method of manufacturing the same | |
| JP2012087853A | Loosening preventing fastening member and loosening preventing bolt | |
| JP2012007625A | Locking washer |