| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 4 | |
| #2 | United States | 3 | |
| #3 | China | 2 | |
| #4 | Taiwan | 2 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Office furniture | |
| #2 | Chairs and beds | |
| #3 | Unspecified technologies | |
| #4 | Household appliances | |
| #5 | Nails |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sudoh Fumio | 7 |
| #2 | Namekawa Tadashi | 6 |
| #3 | Umehara So | 3 |
| #4 | Umehara Soh | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CN107949300A | Lifting platform with height adjuster | |
| WO2017022763A1 | Connection structure of support column and seat support of chair, and chair having said connection structure | |
| WO2014054819A1 | Wall-mounting means using pin member | |
| US2015042139A1 | Chair frame structure and method for making the same |