- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 1/40 - Devices for separating or removing fatty or oily substances or similar floating material
Patent holdings for IPC class C02F 1/40
Total number of patents in this class: 1256
10-year publication summary
|
102
|
116
|
120
|
130
|
108
|
118
|
112
|
97
|
79
|
66
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 13569 |
30 |
| Thermaco, Inc. | 60 |
25 |
| East China University of Science and Technology | 523 |
13 |
| Siemens Energy, Inc. | 1703 |
12 |
| Ecolab USA Inc. | 5567 |
12 |
| Canplas Industries Ltd. | 89 |
11 |
| Utsunomiya Kogyo Co., Ltd. | 14 |
11 |
| Veolia Water Solutions & Technologies Support | 535 |
11 |
| Veolia Water Technologies, Inc. | 80 |
11 |
| Halliburton Energy Services, Inc. | 21006 |
9 |
| Aramco Services Company | 4077 |
8 |
| Hydrozonix LLC | 32 |
8 |
| China Petroleum & Chemical Corporation | 1939 |
7 |
| Mitsubishi Materials Corporation | 2472 |
7 |
| Mitsubishi Materials Electronic Chemicals Co., Ltd. | 135 |
7 |
| Schlumberger Technology Corporation | 10994 |
6 |
| Chevron U.S.A. Inc. | 4007 |
6 |
| Korea Institute of Science and Technology | 2156 |
6 |
| 1501367 Alberta Ltd. | 12 |
6 |
| Gradiant Corporation | 138 |
6 |
| Other owners | 1044 |