- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 1/28 - Treatment of water, waste water, or sewage by sorption
Patent holdings for IPC class C02F 1/28
Total number of patents in this class: 5467
10-year publication summary
|
452
|
474
|
552
|
524
|
504
|
483
|
427
|
437
|
390
|
186
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Veolia Water Solutions & Technologies Support | 537 |
53 |
| Evoqua Water Technologies LLC | 913 |
51 |
| King Fahd University of Petroleum and Minerals | 1135 |
47 |
| Kuraray Co., Ltd. | 3495 |
37 |
| Toray Industries, Inc. | 6867 |
35 |
| Nanjing University | 715 |
35 |
| Northwestern University | 3353 |
32 |
| LG Electronics Inc. | 72247 |
26 |
| King Abdulaziz University | 507 |
26 |
| 3m Innovative Properties Company | 17848 |
25 |
| Calgon Carbon Corporation | 237 |
25 |
| Saudi Arabian Oil Company | 12808 |
25 |
| Unilever PLC | 3234 |
24 |
| Omya International AG | 767 |
24 |
| Imam Abdulrahman Bin Faisal University | 499 |
22 |
| Unilever N.V. | 3135 |
21 |
| Siemens Energy, Inc. | 1694 |
20 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10810 |
20 |
| Panasonic Corporation | 20188 |
19 |
| BL Technologies, Inc. | 828 |
19 |
| Other owners | 4881 |