- All sections
- C - Chemistry; metallurgy
- 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: 405
10-year publication summary
|
32
|
25
|
35
|
26
|
31
|
21
|
23
|
19
|
28
|
8
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1110 |
13 |
| Mitsubishi Materials Corporation | 2378 |
10 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
5 |
| Hitachi, Ltd. | 16452 |
5 |
| Dowa Metals & Mining Co., Ltd. | 44 |
5 |
| Nalco Company | 620 |
5 |
| Honeywell International Inc. | 13799 |
4 |
| Global Ecoprocess Services Oy | 10 |
4 |
| Nanjing University | 646 |
4 |
| Phillips 66 Company | 1073 |
4 |
| Tosoh Corporation | 1127 |
4 |
| The Regents of the University of California | 18943 |
3 |
| Uop LLC | 4083 |
3 |
| Ecolab USA Inc. | 5190 |
3 |
| Evoqua Water Technologies LLC | 904 |
3 |
| GHD Pty Ltd | 14 |
3 |
| Lixivia, Inc. | 36 |
3 |
| Newsouth Innovations Pty Limited | 567 |
3 |
| Sumitomo Metal Mining Co., Ltd. | 1670 |
3 |
| Sumitomo Osaka Cement Co., Ltd. | 783 |
3 |
| Other owners | 315 |