- 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: 587
10-year publication summary
54
|
61
|
54
|
63
|
46
|
51
|
49
|
50
|
46
|
22
|
2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Evoqua Water Technologies LLC | 914 |
13 |
Terralithium LLC | 55 |
13 |
Orege | 36 |
12 |
Lummus Technology LLC | 439 |
9 |
Nanjing Yanchang Reaction Technology Research Institute Co. Ltd | 120 |
9 |
Marathon Petroleum Company LP | 361 |
7 |
Mitsubishi Hitachi Power Systems, Ltd. | 993 |
7 |
Mitsubishi Heavy Industries, Ltd. | 8685 |
6 |
Absolute Aeration | 7 |
6 |
Bill Archer LLC | 6 |
6 |
Siemens Energy, Inc. | 1691 |
5 |
R.E. Prescott Co., Inc. | 9 |
5 |
Sumitomo Metal Mining Co., Ltd. | 1766 |
5 |
Centre National de La Recherche Scientifique | 10408 |
4 |
Georgia Tech Research Corporation | 2722 |
4 |
BL Technologies, Inc. | 833 |
4 |
Cranfield University | 85 |
4 |
Eco Too, LLC | 8 |
4 |
James Richard Spears MD PLLC | 9 |
4 |
Kurita Water Industries Ltd. | 1190 |
4 |
Other owners | 456 |