- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 1/74 - Treatment of water, waste water, or sewage by oxidation with air
Patent holdings for IPC class C02F 1/74
Total number of patents in this class: 603
10-year publication summary
|
50
|
52
|
52
|
58
|
38
|
43
|
42
|
38
|
44
|
37
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Evoqua Water Technologies LLC | 919 |
14 |
| Terralithium LLC | 55 |
13 |
| Orege | 37 |
12 |
| Lummus Technology LLC | 447 |
10 |
| Nanjing Yanchang Reaction Technology Research Institute Co. Ltd | 120 |
9 |
| Marathon Petroleum Company LP | 359 |
7 |
| Mitsubishi Hitachi Power Systems, Ltd. | 993 |
7 |
| Mitsubishi Heavy Industries, Ltd. | 8787 |
6 |
| Absolute Aeration | 7 |
6 |
| Bill Archer LLC | 6 |
6 |
| Siemens Energy, Inc. | 1708 |
5 |
| R.E. Prescott Co., Inc. | 9 |
5 |
| Sumitomo Metal Mining Co., Ltd. | 1791 |
5 |
| Centre National de La Recherche Scientifique | 10531 |
4 |
| Georgia Tech Research Corporation | 2762 |
4 |
| BL Technologies, Inc. | 836 |
4 |
| Cranfield University | 92 |
4 |
| Eco Too, LLC | 8 |
4 |
| James Richard Spears MD PLLC | 9 |
4 |
| Kurita Water Industries Ltd. | 1204 |
4 |
| Other owners | 470 |