| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 5 | |
| #2 | Australia | 1 | |
| #3 | Canada | 1 | |
| #4 | EPO (European Patent Office) | 1 | |
| #5 | Republic of Korea | 1 | |
| #6 | Taiwan | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Clutches and brakes | |
| #2 | Shafts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Yamaji Ippei | 9 |
| #2 | Mimura Kenji | 7 |
| #3 | Yamazaki Nobutoshi | 1 |
| #4 | Hasegawa Tsukasa | 1 |
| #5 | Yamaji Epei | 1 |
| #6 | Yamaji Masaru | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JP2004211305A | Grounding member for stepladder, ladder or tripod | |
| JP2001311425A | Rolling friction device and weaving machine using the same | |
| CA2293075A1 | Friction resistance generator | |
| JP2001137384A | Device for putting load on joint | |
| JP2000283254A | Hemispherical continuously variable transmission | |
| JP2000266119A | Spherical joint coupling with braking function and base isolation device using this coupling |