- All sections
- C - Chemistry; metallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
Patent holdings for IPC class C02F 1/52
Total number of patents in this class: 3225
10-year publication summary
|
339
|
293
|
346
|
274
|
319
|
295
|
322
|
213
|
180
|
79
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kemira Oyj | 1167 |
91 |
| Veolia Water Solutions & Technologies Support | 547 |
78 |
| Kurita Water Industries Ltd. | 1110 |
67 |
| Ecolab USA Inc. | 5190 |
63 |
| Evoqua Water Technologies LLC | 904 |
58 |
| General Electric Company | 18133 |
27 |
| Veolia Water Technologies, Inc. | 80 |
27 |
| Saudi Arabian Oil Company | 11322 |
25 |
| SunCor Energy Inc. | 838 |
25 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
23 |
| Gradiant Corporation | 123 |
22 |
| Unilever PLC | 3540 |
21 |
| Unilever N.V. | 3440 |
21 |
| BL Technologies, Inc. | 831 |
20 |
| Nalco Company | 620 |
20 |
| Nanjing University | 646 |
19 |
| Metawater Co., Ltd. | 181 |
18 |
| Omya International AG | 816 |
17 |
| Graymont Western Canada Inc. | 32 |
16 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
15 |
| Other owners | 2552 |