| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 8 | |
| #2 | United States | 4 | |
| #3 | WIPO (World Intellectual Property Organization) | 3 | |
| #4 | China | 1 | |
| #5 | Germany | 1 |
| # | Technology | |
|---|---|---|
| #1 | Wheelchairs and sledges | |
| #2 | Unspecified technologies | |
| #3 | Cycles | |
| #4 | Cycle brakes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Tagawa Koichi | 8 |
| #2 | Nakatani Akira | 4 |
| #3 | Kobayashi Jun | 4 |
| #4 | Yamazaki Toshimasa | 3 |
| #5 | Iwasaki Yoshihisa Maeda Indust | 2 |
| #6 | Takeda Tohru | 1 |
| #7 | Ohta Masao | 1 |
| #8 | Ohayashi Osamu | 1 |
| #9 | Iwasaki Yoshihisa | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO9418061A1 | Speed change operating device for bicycle | |
| US5481934A | Bicycle speed change operation assembly | |
| DE4396847C2 | Bicycle multiple sprocket assembly | |
| EP0513394A1 | Change gear mechanism for bicycle |