| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 6 | |
| #2 | Republic of Korea | 3 | |
| #3 | Taiwan | 2 | |
| #4 | United States | 2 | |
| #5 | China | 1 | |
| #6 | EPO (European Patent Office) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Chemical engineering | |
| #3 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Rotary-pistons | |
| #2 | Pumps | |
| #3 | Separation | |
| #4 | Rotary pistons | |
| #5 | Storage of greenhouse gases |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ozawa Osamu | 8 |
| #2 | Tsutsumi Shuzo | 5 |
| #3 | Imai Toshio | 2 |
| #4 | Moteki Kotaro | 2 |
| #5 | Iwashita Koki | 2 |
| #6 | Iwane Matsumi | 2 |
| #7 | Hanaoka Takashi | 2 |
| #8 | Kato Toshiaki | 2 |
| #9 | Sakakibara Takuya | 1 |
| #10 | Otsuda Tomofumi | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO2020255300A1 | Vacuum pump | |
| WO2020234947A1 | Vacuum pump | |
| WO2019130514A1 | Method of reducing powder load of dry vacuum pump and powder load reducer | |
| WO2012011206A1 | Vane compressor | |
| WO2011039812A1 | Positive displacement dry vacuum pump | |
| WO2008152713A1 | Roots pump and method of producing roots pump |