| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 82 | |
| #2 | EPO (European Patent Office) | 10 | |
| #3 | Canada | 9 | |
| #4 | Taiwan | 7 | |
| #5 | Republic of Korea | 6 | |
| #6 | Australia | 5 | |
| #7 | Norway | 5 | |
| #8 | China | 4 | |
| #9 | Czechia | 4 | |
| #10 | Finland | 4 | |
| #11 | Hungary | 4 | |
| #12 | United States | 4 | |
| #13 | South Africa | 4 | |
| #14 | Bulgaria | 3 | |
| #15 | Russian Federation | 3 | |
| #16 | Brazil | 2 | |
| #17 | Malaysia | 2 | |
| #18 | Portugal | 2 | |
| #19 | German Democratic Republic | 1 | |
| #20 | Denmark | 1 | |
| #21 | Egypt | 1 | |
| #22 | United Kingdom | 1 | |
| #23 | Greece | 1 | |
| #24 | Hong Kong | 1 | |
| #25 | Indonesia | 1 | |
| #26 | India | 1 | |
| #27 | Mexico | 1 | |
| #28 | Poland | 1 | |
| #29 | Singapore | 1 | |
| #30 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Scaffolding | |
| #2 | Unspecified technologies | |
| #3 | Nails | |
| #4 | Swimming pools | |
| #5 | Finishing work on buildings | |
| #6 | Ladders | |
| #7 | Chairs and beds |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ono Tatsuo | 139 |
| #2 | Kuramoto Kikuzo | 22 |
| #3 | Masuda Akira | 17 |
| #4 | Suzuki Yoshiyuki | 6 |
| #5 | Tatsuo Ono | 2 |
| #6 | Kuranoto Kikuzo | 1 |
| #7 | Hasegawa Ayako | 1 |
| #8 | Kurausu Butsutogeraito | 1 |
| #9 | Tatsuo Kono | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JP2021008771A | Post device, and handrail device | |
| JP2020020256A | Handrail device | |
| JP2020007785A | Handrail device | |
| JP2018104988A | Supporting column apparatus | |
| JP2018087450A | Support device | |
| JP2018044343A | Handrail device | |
| JP2018042701A | Safety rope attaching guide | |
| JP2016044525A | Handrail support device and connector | |
| JP2012219455A | Safety handrail | |
| JP2012219457A | Safety handrail | |
| JP2012219456A | Safety handrail | |
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| JP2011127339A | Scaffold device | |
| JP2010242419A | Preceding handrail | |
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| JP2008050939A | Baseboard | |
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| JP2008267050A | Scaffold device |