- All sections
- C - Chemistry; metallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 1/42 - Treatment of water, waste water, or sewage by ion-exchange
Patent holdings for IPC class C02F 1/42
Total number of patents in this class: 2547
10-year publication summary
|
224
|
220
|
193
|
200
|
225
|
230
|
173
|
175
|
178
|
46
|
| 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 |
83 |
| Organo Corporation | 394 |
74 |
| Evoqua Water Technologies LLC | 904 |
60 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
31 |
| Ecolab USA Inc. | 5190 |
26 |
| Dow Global Technologies LLC | 10147 |
22 |
| Brita GmbH | 109 |
22 |
| Chandler Systems, Inc. | 39 |
21 |
| Veolia Water Solutions & Technologies Support | 547 |
20 |
| The Regents of the University of California | 18943 |
19 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
19 |
| Judo Wasseraufbereitung GmbH | 126 |
19 |
| Midea Group Co., Ltd. | 4025 |
19 |
| Nanjing University | 646 |
19 |
| Culligan International Company | 141 |
18 |
| Nomura Micro Science Co., Ltd. | 67 |
17 |
| Saltworks Technologies Inc. | 87 |
17 |
| Rohm and Haas Company | 2805 |
16 |
| Samsung Electronics Co., Ltd. | 131630 |
15 |
| BWT Aktiengesellschaft | 40 |
15 |
| Other owners | 1995 |