| # | Country | Total Patents | |
|---|---|---|---|
| #1 | China | 142 | |
| #2 | United States | 125 | |
| #3 | EPO (European Patent Office) | 45 | |
| #4 | Germany | 43 | |
| #5 | WIPO (World Intellectual Property Organization) | 14 | |
| #6 | Hong Kong | 5 | |
| #7 | Republic of Korea | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Transport | |
| #3 | Mechanical elements | |
| #4 | Machines | |
| #5 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Motor vehicles | |
| #2 | Rotary-pistons | |
| #3 | Venting or aerating devices | |
| #4 | Lubricating of machines | |
| #5 | Cooling of machines | |
| #6 | Unspecified technologies | |
| #7 | Shafts | |
| #8 | Dynamo-electric machines | |
| #9 | Rotary pistons | |
| #10 | Supplying combustion engines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Watanabe Takatoshi | 55 |
| #2 | Miyajima Junichi | 47 |
| #3 | Ozeki Akifumi | 40 |
| #4 | Fujiki Kenichi | 38 |
| #5 | Izutsu Masato | 31 |
| #6 | Sekiguchi Toru | 24 |
| #7 | Nagai Toshihito | 19 |
| #8 | Ono Yasunori | 17 |
| #9 | Junichi Miyajima | 17 |
| #10 | Takahashi Ryosuke | 16 |
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