- 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: 2789
10-year publication summary
|
204
|
179
|
188
|
217
|
214
|
165
|
174
|
178
|
160
|
157
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1203 |
95 |
| Organo Corporation | 480 |
95 |
| Evoqua Water Technologies LLC | 918 |
79 |
| Midea Group Co., Ltd. | 4600 |
42 |
| Panasonic Intellectual Property Management Co., Ltd. | 31806 |
35 |
| Ecolab USA Inc. | 5512 |
28 |
| Nomura Micro Science Co., Ltd. | 80 |
23 |
| Brita GmbH | 97 |
22 |
| Chandler Systems, Inc. | 41 |
21 |
| The Regents of the University of California | 20059 |
20 |
| Veolia Water Solutions & Technologies Support | 534 |
20 |
| Mitsubishi Heavy Industries, Ltd. | 8783 |
19 |
| Culligan International Company | 152 |
19 |
| Judo Wasseraufbereitung GmbH | 137 |
19 |
| Nanjing University | 736 |
19 |
| Samsung Electronics Co., Ltd. | 147501 |
18 |
| Dow Global Technologies LLC | 10402 |
18 |
| Saltworks Technologies Inc. | 95 |
17 |
| Foshan Midea Chungho Water Purification Equipment Co., Ltd. | 60 |
17 |
| BL Technologies, Inc. | 836 |
15 |
| Other owners | 2148 |