- 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: 2924
10-year publication summary
|
194
|
201
|
229
|
235
|
181
|
192
|
198
|
176
|
217
|
115
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Organo Corporation | 537 |
107 |
| Kurita Water Industries Ltd. | 1274 |
106 |
| Evoqua Water Technologies LLC | 931 |
88 |
| Midea Group Co., Ltd. | 4938 |
45 |
| Panasonic Intellectual Property Management Co., Ltd. | 33834 |
39 |
| Ecolab USA Inc. | 5786 |
30 |
| Nomura Micro Science Co., Ltd. | 86 |
29 |
| The Regents of the University of California | 20646 |
22 |
| Brita GmbH | 95 |
22 |
| Chandler Systems, Inc. | 41 |
21 |
| Mitsubishi Heavy Industries, Ltd. | 9071 |
20 |
| Veolia Water Solutions & Technologies Support | 532 |
20 |
| Samsung Electronics Co., Ltd. | 156553 |
19 |
| Culligan International Company | 150 |
19 |
| Judo Wasseraufbereitung GmbH | 137 |
19 |
| Nanjing University | 795 |
19 |
| Dow Global Technologies LLC | 10900 |
18 |
| Foshan Midea Chungho Water Purification Equipment Co., Ltd. | 61 |
18 |
| BL Technologies, Inc. | 844 |
17 |
| Saltworks Technologies Inc. | 96 |
17 |
| Other owners | 2229 |