- 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: 2207
10-year publication summary
|
202
|
223
|
164
|
225
|
193
|
194
|
176
|
165
|
203
|
131
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Evoqua Water Technologies LLC | 918 |
44 |
| Ecolab USA Inc. | 5480 |
42 |
| Veolia Water Solutions & Technologies Support | 533 |
37 |
| Kurita Water Industries Ltd. | 1194 |
30 |
| Omya International AG | 774 |
25 |
| Kemira Oyj | 1206 |
24 |
| ChemTreat, Inc. | 226 |
16 |
| General Electric Company | 13780 |
14 |
| Fluid Energy Group Ltd. | 57 |
14 |
| Claros Technologies Inc. | 36 |
12 |
| CarbonCure Technologies Inc. | 85 |
11 |
| Gradiant Corporation | 130 |
11 |
| Nanjing University | 727 |
11 |
| BL Technologies, Inc. | 834 |
10 |
| Clean Chemistry, Inc. | 36 |
10 |
| Mintek | 46 |
10 |
| Techcross Co., Ltd. | 37 |
10 |
| Terralithium LLC | 55 |
10 |
| Ostara Nutrient Recovery Technologies Inc. | 53 |
9 |
| RDP Technologies, Inc. | 33 |
9 |
| Other owners | 1848 |