| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 2 | |
| #2 | Taiwan | 2 | |
| #3 | United States | 2 | |
| #4 | WIPO (World Intellectual Property Organization) | 2 | |
| #5 | Brazil | 1 | |
| #6 | EPO (European Patent Office) | 1 | |
| #7 | Republic of Korea | 1 | |
| #8 | Mexico | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Nails | |
| #2 | Making screws | |
| #3 | Gearing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Shinbutsu Toshinaka | 10 |
| #2 | Amano Shuichi | 10 |
| #3 | Takemasu Teruie | 10 |
| #4 | Teruie Takemasu | 2 |
| #5 | Shuichi Amano | 2 |
| #6 | Toshinaka Shinbutsu | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2020132105A1 | Dual-threaded screw structure and fastening structure therewith | |
| TW201819782A | Double screw structure | |
| CA2984100A1 | Dual-threaded screw structure |