- All sections
- C - Chemistrymetallurgy
- 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: 2818
10-year publication summary
|
204
|
179
|
188
|
217
|
215
|
165
|
175
|
180
|
160
|
189
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Organo Corporation | 507 |
100 |
| Kurita Water Industries Ltd. | 1230 |
98 |
| Evoqua Water Technologies LLC | 922 |
82 |
| Midea Group Co., Ltd. | 4678 |
42 |
| Panasonic Intellectual Property Management Co., Ltd. | 32457 |
35 |
| Ecolab USA Inc. | 5598 |
28 |
| Nomura Micro Science Co., Ltd. | 79 |
23 |
| Brita GmbH | 97 |
22 |
| Chandler Systems, Inc. | 41 |
21 |
| The Regents of the University of California | 20289 |
20 |
| Mitsubishi Heavy Industries, Ltd. | 8875 |
20 |
| Veolia Water Solutions & Technologies Support | 536 |
20 |
| Culligan International Company | 151 |
19 |
| Judo Wasseraufbereitung GmbH | 137 |
19 |
| Nanjing University | 745 |
19 |
| Samsung Electronics Co., Ltd. | 149087 |
18 |
| Dow Global Technologies LLC | 10555 |
18 |
| Saltworks Technologies Inc. | 95 |
17 |
| Foshan Midea Chungho Water Purification Equipment Co., Ltd. | 60 |
17 |
| BL Technologies, Inc. | 838 |
15 |
| Other owners | 2165 |