- 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: 429
10-year publication summary
|
20
|
32
|
22
|
28
|
18
|
25
|
20
|
28
|
20
|
24
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1209 |
14 |
| Mitsubishi Materials Corporation | 2470 |
6 |
| Imam Abdulrahman Bin Faisal University | 537 |
6 |
| Mitsubishi Heavy Industries, Ltd. | 8813 |
5 |
| Hitachi, Ltd. | 15599 |
5 |
| Dowa Metals & Mining Co., Ltd. | 42 |
5 |
| Nalco Company | 571 |
5 |
| Tosoh Corporation | 1327 |
5 |
| The Regents of the University of California | 20137 |
4 |
| Honeywell International Inc. | 13552 |
4 |
| Ecolab USA Inc. | 5538 |
4 |
| Global Ecoprocess Services Oy | 7 |
4 |
| Nanjing University | 739 |
4 |
| Regents of the University of Minnesota | 2711 |
4 |
| Sachem, Inc. | 71 |
4 |
| Uop LLC | 4247 |
3 |
| Evoqua Water Technologies LLC | 919 |
3 |
| GHD Pty Ltd | 11 |
3 |
| Jiangnan University | 1542 |
3 |
| Lixivia, Inc. | 32 |
3 |
| Other owners | 335 |