- All sections
- C - Chemistry; metallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 1/66 - Treatment of water, waste water, or sewage pH adjustment
Patent holdings for IPC class C02F 1/66
Total number of patents in this class: 1908
10-year publication summary
|
182
|
202
|
223
|
163
|
222
|
191
|
190
|
160
|
141
|
52
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Veolia Water Solutions & Technologies Support | 547 |
39 |
| Ecolab USA Inc. | 5190 |
34 |
| Evoqua Water Technologies LLC | 904 |
32 |
| Omya International AG | 816 |
29 |
| Kurita Water Industries Ltd. | 1110 |
27 |
| Kemira Oyj | 1167 |
22 |
| General Electric Company | 18133 |
15 |
| Fluid Energy Group Ltd. | 70 |
14 |
| ChemTreat, Inc. | 198 |
12 |
| Dorf Ketal Chemicals FZE | 238 |
12 |
| Gradiant Corporation | 123 |
11 |
| Nanjing University | 646 |
11 |
| BL Technologies, Inc. | 831 |
10 |
| Clean Chemistry, Inc. | 33 |
10 |
| Mintek | 48 |
10 |
| Techcross Co., Ltd. | 37 |
10 |
| CarbonCure Technologies Inc. | 80 |
9 |
| Ostara Nutrient Recovery Technologies Inc. | 49 |
9 |
| RDP Technologies, Inc. | 34 |
9 |
| Veolia Water Technologies, Inc. | 80 |
9 |
| Other owners | 1574 |