| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 81 | |
| #2 | China | 8 | |
| #3 | EPO (European Patent Office) | 8 | |
| #4 | Republic of Korea | 8 | |
| #5 | Taiwan | 7 | |
| #6 | United States | 7 | |
| #7 | Singapore | 6 | |
| #8 | Hong Kong | 5 | |
| #9 | Canada | 4 | |
| #10 | WIPO (World Intellectual Property Organization) | 4 | |
| #11 | Malaysia | 2 | |
| #12 | Australia | 1 | |
| #13 | India | 1 | |
| #14 | New Zealand | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Yasuda Akio | 39 |
| #2 | Inoue Hiroshi | 35 |
| #3 | Takada Tamotsu | 31 |
| #4 | Inoue Tomohito | 24 |
| #5 | Fukuyama Jun | 20 |
| #6 | Sakatani Koji | 16 |
| #7 | Ikemoto Risa | 13 |
| #8 | Takahashi Kiyokazu | 10 |
| #9 | Hiroshi Inoue | 9 |
| #10 | Inoue Yoshinori | 8 |
| Publication | Filing date | Title |
|---|---|---|
| WO2020262318A1 | Pipe joint | |
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| JP2011153636A | Pipe joint |