- 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: 5820
10-year publication summary
|
438
|
506
|
495
|
462
|
451
|
398
|
415
|
387
|
446
|
74
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| King Fahd University of Petroleum and Minerals | 1450 |
57 |
| Evoqua Water Technologies LLC | 924 |
53 |
| Veolia Water Solutions & Technologies Support | 535 |
52 |
| Kuraray Co., Ltd. | 3560 |
40 |
| Toray Industries, Inc. | 7026 |
38 |
| Nanjing University | 771 |
38 |
| Northwestern University | 3499 |
34 |
| Saudi Arabian Oil Company | 13904 |
34 |
| Imam Mohammad Ibn Saud Islamic University | 215 |
29 |
| King Abdulaziz University | 516 |
28 |
| Calgon Carbon Corporation | 248 |
27 |
| LG Electronics Inc. | 74619 |
26 |
| 3m Innovative Properties Company | 17589 |
25 |
| Omya International AG | 770 |
24 |
| Imam Abdulrahman Bin Faisal University | 569 |
24 |
| Unilever PLC | 3073 |
22 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10978 |
21 |
| Siemens Energy, Inc. | 1698 |
20 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1248 |
20 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1217 |
20 |
| Other owners | 5188 |