| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 6 | |
| #2 | United Kingdom | 1 | |
| #3 | Hong Kong | 1 | |
| #4 | Republic of Korea | 1 | |
| #5 | United States | 1 | |
| #6 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Measuring distances | |
| #2 | Physical training equipment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Koiwai Hideaki | 11 |
| Publication | Filing date | Title |
|---|---|---|
| JP2007125332A | Putter with range finder | |
| JP2006334343A | Putter for golf | |
| JP2006158893A | Long putting exercise apparatus | |
| WO2004105892A1 | Putter with distance measuring function | |
| JP2005237396A | Multifunctional putter | |
| JP2005034572A | Green surface rolling speed detector for golf | |
| JP2004354361A | Electronic inclination sensor |