- 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: 1307
10-year publication summary
|
125
|
129
|
143
|
115
|
125
|
119
|
104
|
83
|
77
|
65
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 14161 |
35 |
| Thermaco, Inc. | 58 |
24 |
| East China University of Science and Technology | 553 |
13 |
| Siemens Energy, Inc. | 1684 |
12 |
| Ecolab USA Inc. | 5789 |
12 |
| Canplas Industries Ltd. | 90 |
11 |
| Utsunomiya Kogyo Co., Ltd. | 15 |
11 |
| Veolia Water Solutions & Technologies Support | 533 |
11 |
| Veolia Water Technologies, Inc. | 81 |
11 |
| Halliburton Energy Services, Inc. | 21306 |
9 |
| Aramco Services Company | 4182 |
8 |
| Hydrozonix LLC | 28 |
8 |
| Chevron U.S.A. Inc. | 4134 |
7 |
| China Petroleum & Chemical Corporation | 2142 |
7 |
| Mitsubishi Materials Corporation | 2468 |
7 |
| Mitsubishi Materials Electronic Chemicals Co., Ltd. | 139 |
7 |
| Schlumberger Technology Corporation | 11767 |
6 |
| Korea Institute of Science and Technology | 2250 |
6 |
| 1501367 Alberta Ltd. | 12 |
6 |
| Gradiant Corporation | 147 |
6 |
| Other owners | 1090 |