- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 101/38 - Organic compounds containing nitrogen
Patent holdings for IPC class C02F 101/38
Total number of patents in this class: 426
10-year publication summary
|
21
|
33
|
29
|
33
|
30
|
41
|
39
|
45
|
49
|
15
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Covestro Deutschland AG | 2808 |
11 |
| Nanjing University | 789 |
11 |
| Ecolab USA Inc. | 5753 |
9 |
| BASF SE | 21165 |
8 |
| Safe Foods Corporation | 86 |
7 |
| BL Technologies, Inc. | 838 |
6 |
| Evoqua Water Technologies LLC | 931 |
6 |
| Organo Corporation | 534 |
5 |
| Soochow University | 1770 |
5 |
| Tongji University | 587 |
5 |
| Evonik Operations GmbH | 4283 |
5 |
| Northwestern University | 3530 |
4 |
| Drexel University | 1007 |
4 |
| King Fahd University of Petroleum and Minerals | 1524 |
4 |
| Nanjing University of Science and Technology | 173 |
4 |
| Koi Acres LLC | 4 |
4 |
| Aqua-Terra Consultants, Alan Ismond, a citizen of United States | 10 |
4 |
| Dow Global Technologies LLC | 10845 |
3 |
| Chinese Research Academy of Environmental Sciences | 130 |
3 |
| Doosan Heavy Industries & Construction Co., Ltd. | 580 |
3 |
| Other owners | 315 |