- 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: 5984
10-year publication summary
|
476
|
553
|
527
|
505
|
486
|
433
|
452
|
416
|
481
|
253
|
| 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 | 1569 |
61 |
| Evoqua Water Technologies LLC | 931 |
53 |
| Veolia Water Solutions & Technologies Support | 533 |
51 |
| Kuraray Co., Ltd. | 3589 |
41 |
| Toray Industries, Inc. | 7096 |
38 |
| Nanjing University | 800 |
38 |
| Northwestern University | 3540 |
34 |
| Saudi Arabian Oil Company | 14207 |
34 |
| Imam Mohammad Ibn Saud Islamic University | 232 |
32 |
| Calgon Carbon Corporation | 256 |
31 |
| King Abdulaziz University | 521 |
28 |
| LG Electronics Inc. | 75654 |
27 |
| Omya International AG | 777 |
24 |
| Imam Abdulrahman Bin Faisal University | 611 |
24 |
| 3m Innovative Properties Company | 17488 |
23 |
| Unilever PLC | 3002 |
22 |
| Unitika Ltd. | 444 |
21 |
| Siemens Energy, Inc. | 1685 |
20 |
| Commissariat à l'énergie atomique et aux energies alternatives | 11127 |
20 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1265 |
20 |
| Other owners | 5342 |