- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
Patent holdings for IPC class C02F 1/66
Total number of patents in this class: 2251
10-year publication summary
|
172
|
200
|
147
|
196
|
165
|
171
|
161
|
151
|
198
|
171
|
| 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 |
46 |
| Ecolab USA Inc. | 5519 |
43 |
| Veolia Water Solutions & Technologies Support | 535 |
37 |
| Kurita Water Industries Ltd. | 1204 |
32 |
| Kemira Oyj | 1212 |
25 |
| Omya International AG | 771 |
25 |
| ChemTreat, Inc. | 235 |
16 |
| General Electric Company | 13859 |
14 |
| Fluid Energy Group Ltd. | 59 |
14 |
| Claros Technologies Inc. | 37 |
13 |
| CarbonCure Technologies Inc. | 88 |
11 |
| Gradiant Corporation | 131 |
11 |
| Nanjing University | 738 |
11 |
| BL Technologies, Inc. | 836 |
10 |
| Clean Chemistry, Inc. | 40 |
10 |
| Mintek | 46 |
10 |
| Techcross Co., Ltd. | 37 |
10 |
| Veolia Water Technologies, Inc. | 78 |
10 |
| Terralithium LLC | 55 |
10 |
| Ebb Carbon, Inc. | 19 |
10 |
| Other owners | 1883 |