- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 1/58 - Treatment of water, waste water, or sewage by removing specified dissolved compounds
Patent holdings for IPC class C02F 1/58
Total number of patents in this class: 970
10-year publication summary
|
49
|
87
|
68
|
65
|
69
|
59
|
61
|
60
|
61
|
36
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1187 |
52 |
| Saudi Arabian Oil Company | 12891 |
22 |
| Organo Corporation | 457 |
19 |
| Panasonic Intellectual Property Management Co., Ltd. | 31022 |
14 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6269 |
13 |
| Mitsubishi Heavy Industries, Ltd. | 8657 |
12 |
| 3m Innovative Properties Company | 17855 |
10 |
| Evoqua Water Technologies LLC | 914 |
10 |
| Taiheiyo Cement Corporation | 236 |
8 |
| Uop LLC | 4216 |
7 |
| Technion Research & Development Foundation Ltd. | 1212 |
7 |
| Metso Outotec Finland Oy | 527 |
7 |
| Nuquatic, LLC | 22 |
7 |
| Battelle Memorial Institute | 2475 |
6 |
| Lanxess Deutschland GmbH | 1124 |
6 |
| Nanjing University | 721 |
6 |
| Sumitomo Metal Mining Co., Ltd. | 1761 |
6 |
| The Texas a & M University System | 1680 |
6 |
| Ecolab USA Inc. | 5456 |
5 |
| Katayama Chemical, Inc. | 35 |
5 |
| Other owners | 742 |