- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 1/62 - Heavy metal compounds
Patent holdings for IPC class C02F 1/62
Total number of patents in this class: 430
10-year publication summary
|
35
|
26
|
31
|
21
|
26
|
20
|
32
|
21
|
30
|
13
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1292 |
16 |
| Tosoh Corporation | 1425 |
6 |
| Imam Abdulrahman Bin Faisal University | 636 |
6 |
| Mitsubishi Heavy Industries, Ltd. | 9188 |
5 |
| Hitachi, Ltd. | 16194 |
5 |
| Mitsubishi Materials Corporation | 2481 |
5 |
| The Regents of the University of California | 20868 |
4 |
| Honeywell International Inc. | 12770 |
4 |
| Dowa Metals & Mining Co., Ltd. | 40 |
4 |
| Ecolab USA Inc. | 5826 |
4 |
| Global Ecoprocess Services Oy | 7 |
4 |
| Nalco Company | 532 |
4 |
| Nanjing University | 806 |
4 |
| Regents of the University of Minnesota | 2801 |
4 |
| Sachem, Inc. | 66 |
4 |
| Uop LLC | 4407 |
3 |
| BKT Co., Ltd. | 69 |
3 |
| Evoqua Water Technologies LLC | 934 |
3 |
| Jiangnan University | 1639 |
3 |
| Newsouth Innovations Pty Limited | 627 |
3 |
| Other owners | 336 |