- 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: 2941
10-year publication summary
|
225
|
231
|
294
|
300
|
269
|
309
|
305
|
260
|
283
|
112
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Evoqua Water Technologies LLC | 914 |
78 |
| Veolia Water Solutions & Technologies Support | 536 |
52 |
| Kurita Water Industries Ltd. | 1182 |
46 |
| Organo Corporation | 451 |
26 |
| General Electric Company | 17062 |
19 |
| Samsung Electronics Co., Ltd. | 143303 |
18 |
| Veolia Water Technologies, Inc. | 77 |
17 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1157 |
16 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1125 |
16 |
| Saudi Arabian Oil Company | 12785 |
16 |
| Suez International | 331 |
16 |
| VWS (UK) Limited | 75 |
16 |
| Gradiant Corporation | 128 |
14 |
| Mitsubishi Heavy Industries, Ltd. | 8608 |
13 |
| Merck Patent GmbH | 5829 |
13 |
| Hitachi, Ltd. | 15383 |
13 |
| Ecolab USA Inc. | 5439 |
13 |
| Enviro Water Minerals Company, Inc. | 24 |
12 |
| LG Electronics Inc. | 72208 |
11 |
| BL Technologies, Inc. | 826 |
11 |
| Other owners | 2505 |