- 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: 3212
10-year publication summary
|
232
|
294
|
299
|
270
|
313
|
304
|
267
|
291
|
300
|
118
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Evoqua Water Technologies LLC | 930 |
85 |
| Veolia Water Solutions & Technologies Support | 533 |
53 |
| Kurita Water Industries Ltd. | 1264 |
50 |
| Organo Corporation | 535 |
34 |
| Saudi Arabian Oil Company | 13949 |
22 |
| Suez International | 365 |
21 |
| Samsung Electronics Co., Ltd. | 154751 |
19 |
| General Electric Company | 13816 |
18 |
| Veolia Water Technologies, Inc. | 81 |
18 |
| Ecolab USA Inc. | 5745 |
16 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1250 |
16 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1219 |
16 |
| VWS (UK) Limited | 70 |
16 |
| Gradiant Corporation | 147 |
15 |
| Mitsubishi Heavy Industries, Ltd. | 9034 |
13 |
| Merck Patent GmbH | 5669 |
13 |
| Hitachi, Ltd. | 15920 |
13 |
| BL Technologies, Inc. | 837 |
13 |
| Kemira Oyj | 1241 |
13 |
| Enviro Water Minerals Company, Inc. | 24 |
12 |
| Other owners | 2736 |