- All sections
- C - Chemistry; metallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 9/00 - Multistage treatment of water, waste water or sewage
Patent holdings for IPC class C02F 9/00
Total number of patents in this class: 2673
10-year publication summary
|
242
|
223
|
230
|
289
|
296
|
264
|
305
|
301
|
249
|
93
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Evoqua Water Technologies LLC | 904 |
62 |
| Veolia Water Solutions & Technologies Support | 547 |
51 |
| Kurita Water Industries Ltd. | 1110 |
45 |
| Organo Corporation | 394 |
20 |
| General Electric Company | 18133 |
19 |
| Veolia Water Technologies, Inc. | 80 |
15 |
| VWS (UK) Limited | 77 |
15 |
| Samsung Electronics Co., Ltd. | 131630 |
14 |
| Hitachi, Ltd. | 16452 |
14 |
| Gradiant Corporation | 123 |
14 |
| Saudi Arabian Oil Company | 11322 |
14 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
13 |
| Merck Patent GmbH | 5909 |
13 |
| BL Technologies, Inc. | 831 |
12 |
| Ecolab USA Inc. | 5190 |
12 |
| Enviro Water Minerals Company, Inc. | 24 |
12 |
| Suez International | 304 |
12 |
| LG Electronics Inc. | 69257 |
11 |
| Doosan Heavy Industries & Construction Co., Ltd. | 604 |
11 |
| DS Services of America, Inc. | 266 |
11 |
| Other owners | 2283 |