- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 3/12 - Activated sludge processes
Patent holdings for IPC class C02F 3/12
Total number of patents in this class: 1850
10-year publication summary
|
163
|
165
|
126
|
175
|
131
|
140
|
119
|
110
|
111
|
41
|
| 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 |
70 |
| Kubota Corporation | 4278 |
48 |
| Veolia Water Solutions & Technologies Support | 532 |
45 |
| Kurita Water Industries Ltd. | 1271 |
44 |
| BL Technologies, Inc. | 841 |
37 |
| Mitsubishi Electric Corporation | 47773 |
28 |
| Toray Industries, Inc. | 7074 |
27 |
| Organo Corporation | 534 |
23 |
| Suez International | 365 |
23 |
| Kemira Oyj | 1246 |
18 |
| Hitachi, Ltd. | 15967 |
17 |
| HaskoningDHV Nederland B.V. | 76 |
16 |
| Nanjing University | 793 |
15 |
| Metawater Co., Ltd. | 201 |
14 |
| Praxair Technology, Inc. | 1234 |
13 |
| General Electric Company | 13854 |
12 |
| Anaergia Inc. | 106 |
12 |
| BKT Co., Ltd. | 66 |
12 |
| Invent Umwelt-und Verfahrenstechnik AG | 129 |
12 |
| Sumitomo Chemical Company, Limited | 9020 |
10 |
| Other owners | 1354 |