- All sections
- C - Chemistry; metallurgy
- 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: 5134
10-year publication summary
|
411
|
452
|
473
|
551
|
518
|
502
|
478
|
409
|
404
|
118
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Veolia Water Solutions & Technologies Support | 547 |
52 |
| Evoqua Water Technologies LLC | 904 |
40 |
| King Fahd University of Petroleum and Minerals | 779 |
38 |
| Nanjing University | 646 |
36 |
| Toray Industries, Inc. | 6652 |
35 |
| Kuraray Co., Ltd. | 3392 |
32 |
| 3m Innovative Properties Company | 18406 |
30 |
| Northwestern University | 3112 |
27 |
| Unilever PLC | 3540 |
26 |
| King Abdulaziz University | 511 |
26 |
| LG Electronics Inc. | 69257 |
25 |
| Omya International AG | 816 |
25 |
| Unilever N.V. | 3440 |
23 |
| Kurita Water Industries Ltd. | 1110 |
22 |
| Calgon Carbon Corporation | 224 |
21 |
| Siemens Energy, Inc. | 1770 |
20 |
| Panasonic Corporation | 20786 |
19 |
| Saudi Arabian Oil Company | 11322 |
19 |
| BASF SE | 19740 |
18 |
| BL Technologies, Inc. | 831 |
18 |
| Other owners | 4582 |