| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 894 | |
| #2 | United States | 51 | |
| #3 | WIPO (World Intellectual Property Organization) | 22 | |
| #4 | EPO (European Patent Office) | 18 | |
| #5 | Australia | 14 | |
| #6 | China | 13 | |
| #7 | Canada | 12 | |
| #8 | Taiwan | 12 | |
| #9 | Germany | 9 | |
| #10 | Hong Kong | 7 | |
| #11 | Republic of Korea | 7 | |
| #12 | France | 4 | |
| #13 | United Kingdom | 4 | |
| #14 | Malaysia | 3 | |
| #15 | Philippines | 3 | |
| #16 | Czechia | 2 | |
| #17 | Italy | 2 | |
| #18 | South Africa | 2 | |
| #19 | Switzerland | 1 | |
| #20 | Norway | 1 | |
| #21 | Singapore | 1 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Medical technology | |
| #3 | Machines | |
| #4 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Chairs and beds | |
| #2 | Physical therapy devices | |
| #3 | Operating tables | |
| #4 | Metal wire processing | |
| #5 | Shaping of plastics | |
| #6 | Unspecified technologies | |
| #7 | Fillers | |
| #8 | Certain plastics | |
| #9 | Unspecified technologies | |
| #10 | Implantable devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Oguma Yoshio | 135 |
| #2 | Ikeda Shigeru | 113 |
| #3 | Masuda Teruo | 90 |
| #4 | Yamaguchi Kazuyuki | 65 |
| #5 | Kawamura Shoji | 64 |
| #6 | Ikeda Minoru | 62 |
| #7 | Sasaki Noboru | 53 |
| #8 | Kamata Tatsuo | 52 |
| #9 | Morita Masayasu | 50 |
| #10 | Oshita Shoji | 43 |
| Publication | Filing date | Title |
|---|---|---|
| WO2021053849A1 | Bed device | |
| WO2020100391A1 | Bed apparatus | |
| JP2021007667A | Down quilt | |
| JP2020188931A | Mattress device | |
| JP2020093069A | Bed device | |
| JP2020141792A | Bed apparatus | |
| JP2020130556A | Sofa bed apparatus | |
| JP2020081832A | Bed device | |
| JP2020069320A | Bed apparatus | |
| JP2020065634A | Bed device | |
| JP2020025635A | Quilt cover | |
| JP2020006027A | Feather quilt, combined quilt, and manufacturing method of feather quilt | |
| JP2019208948A | Bed device | |
| JP2019181137A | Mattress device | |
| JP2019146786A | Bed device | |
| CN110381905A | Bed apparatus | |
| JP2019110976A | Bed device | |
| JP2019103751A | wheelchair | |
| JP2019097658A | Bed device | |
| JP2019058575A | Bed device |