| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | EPO (European Patent Office) | 6 | |
| #3 | WIPO (World Intellectual Property Organization) | 6 | |
| #4 | Australia | 4 | |
| #5 | China | 3 | |
| #6 | Germany | 1 | |
| #7 | Hong Kong | 1 | |
| #8 | Republic of Korea | 1 | |
| #9 | Taiwan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Machines | |
| #3 | Transport | |
| #4 | Surface technology and coating |
| # | Technology | |
|---|---|---|
| #1 | Chairs and beds | |
| #2 | Unspecified technologies | |
| #3 | Office furniture | |
| #4 | Shaping of plastics | |
| #5 | Certain plastics | |
| #6 | Hand carts | |
| #7 | Layered products |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kumazawa Taku | 26 |
| #2 | Iseki Toru | 3 |
| #3 | Kawashima Takehiko | 3 |
| #4 | Saito Takayuki | 2 |
| Publication | Filing date | Title |
|---|---|---|
| KR20200044027A | desk | |
| CN109715012A | The structural body of chair and chair | |
| WO2012153435A1 | Coupling mechanism, and chair | |
| US2007262214A1 | Height adjusting device | |
| US6292990B1 | Method of spreading a sheet on a frame member and method of manufacturing a chair by the sheet spreading method |