- All sections
- C - Chemistry; metallurgy
- 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: 918
10-year publication summary
|
54
|
49
|
87
|
67
|
64
|
69
|
56
|
59
|
53
|
11
|
| 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 |
51 |
| Saudi Arabian Oil Company | 11322 |
20 |
| Organo Corporation | 394 |
17 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
13 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
13 |
| 3m Innovative Properties Company | 18406 |
11 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
11 |
| Taiheiyo Cement Corporation | 237 |
8 |
| Nanjing University | 646 |
7 |
| Technion Research & Development Foundation Ltd. | 1167 |
7 |
| Metso Outotec Finland Oy | 795 |
7 |
| Evoqua Water Technologies LLC | 904 |
6 |
| Lanxess Deutschland GmbH | 1104 |
6 |
| Mitsubishi Materials Corporation | 2378 |
6 |
| Sumitomo Metal Mining Co., Ltd. | 1670 |
6 |
| Ecolab USA Inc. | 5190 |
5 |
| Katayama Chemical, Inc. | 37 |
5 |
| Kemira Oyj | 1167 |
5 |
| Nalco Company | 620 |
5 |
| Phillips 66 Company | 1073 |
5 |
| Other owners | 704 |