- 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: 3259
10-year publication summary
|
232
|
294
|
299
|
271
|
313
|
304
|
267
|
291
|
303
|
161
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Evoqua Water Technologies LLC | 931 |
85 |
| Veolia Water Solutions & Technologies Support | 533 |
53 |
| Kurita Water Industries Ltd. | 1283 |
51 |
| Organo Corporation | 537 |
34 |
| Saudi Arabian Oil Company | 14161 |
23 |
| Suez International | 366 |
21 |
| Samsung Electronics Co., Ltd. | 157300 |
20 |
| General Electric Company | 13894 |
18 |
| Veolia Water Technologies, Inc. | 81 |
18 |
| Ecolab USA Inc. | 5789 |
16 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1264 |
16 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1226 |
16 |
| VWS (UK) Limited | 69 |
16 |
| Gradiant Corporation | 147 |
15 |
| Kemira Oyj | 1258 |
14 |
| Mitsubishi Heavy Industries, Ltd. | 9099 |
13 |
| Merck Patent GmbH | 5725 |
13 |
| Hitachi, Ltd. | 16047 |
13 |
| BL Technologies, Inc. | 843 |
13 |
| Enviro Water Minerals Company, Inc. | 24 |
12 |
| Other owners | 2779 |