- All sections
- C - Chemistrymetallurgy
- 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: 3049
10-year publication summary
|
219
|
218
|
279
|
281
|
246
|
295
|
281
|
251
|
283
|
213
|
| 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 |
80 |
| Veolia Water Solutions & Technologies Support | 535 |
53 |
| Kurita Water Industries Ltd. | 1204 |
46 |
| Organo Corporation | 483 |
27 |
| Samsung Electronics Co., Ltd. | 147622 |
18 |
| General Electric Company | 13859 |
18 |
| Veolia Water Technologies, Inc. | 78 |
18 |
| Saudi Arabian Oil Company | 13372 |
17 |
| Suez International | 340 |
17 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1244 |
16 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1213 |
16 |
| VWS (UK) Limited | 75 |
16 |
| Gradiant Corporation | 131 |
15 |
| Mitsubishi Heavy Industries, Ltd. | 8787 |
13 |
| Merck Patent GmbH | 5768 |
13 |
| Hitachi, Ltd. | 15572 |
13 |
| Ecolab USA Inc. | 5519 |
13 |
| Enviro Water Minerals Company, Inc. | 24 |
12 |
| LG Electronics Inc. | 73578 |
11 |
| BL Technologies, Inc. | 836 |
11 |
| Other owners | 2606 |