- 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: 2303
10-year publication summary
|
172
|
200
|
147
|
196
|
165
|
171
|
163
|
154
|
199
|
208
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Evoqua Water Technologies LLC | 922 |
49 |
| Ecolab USA Inc. | 5601 |
46 |
| Veolia Water Solutions & Technologies Support | 534 |
37 |
| Kurita Water Industries Ltd. | 1232 |
32 |
| Kemira Oyj | 1227 |
26 |
| Omya International AG | 770 |
25 |
| ChemTreat, Inc. | 244 |
17 |
| Claros Technologies Inc. | 39 |
15 |
| General Electric Company | 13830 |
14 |
| Fluid Energy Group Ltd. | 60 |
14 |
| Nanjing University | 748 |
13 |
| CarbonCure Technologies Inc. | 88 |
11 |
| Gradiant Corporation | 140 |
11 |
| Terralithium LLC | 56 |
11 |
| BL Technologies, Inc. | 839 |
10 |
| Clean Chemistry, Inc. | 40 |
10 |
| Mintek | 46 |
10 |
| Techcross Co., Ltd. | 37 |
10 |
| Veolia Water Technologies, Inc. | 80 |
10 |
| Ebb Carbon, Inc. | 21 |
10 |
| Other owners | 1922 |