- All sections
- C - Chemistry; metallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 101/22 - Chromium or chromium compounds, e.g. chromates
Patent holdings for IPC class C02F 101/22
Total number of patents in this class: 227
10-year publication summary
|
23
|
18
|
25
|
31
|
25
|
24
|
23
|
14
|
26
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| King Fahd University of Petroleum and Minerals | 1008 |
11 |
| Dexerials Corporation | 1920 |
6 |
| Nanjing University | 692 |
4 |
| Soochow University | 1718 |
4 |
| Powertech Water Inc. | 19 |
4 |
| Halliburton Energy Services, Inc. | 20438 |
3 |
| Northwestern University | 3276 |
3 |
| AMS Trace Metals, Inc. | 22 |
3 |
| Höganäs AB | 322 |
3 |
| Mekorot Water Company, Ltd | 27 |
3 |
| Omya International AG | 810 |
3 |
| Sinyu Technology (Fujian) Co., Ltd. | 44 |
3 |
| Glanris, Inc | 7 |
3 |
| LG Electronics Inc. | 71039 |
2 |
| Centre National de La Recherche Scientifique | 10102 |
2 |
| Uop LLC | 4188 |
2 |
| Dow Global Technologies LLC | 10156 |
2 |
| The Curators of the University of Missouri | 1000 |
2 |
| Ecole Polytechnique Federale de Lausanne (epfl) | 1503 |
2 |
| Ionex SG Limited | 4 |
2 |
| Other owners | 160 |