- All sections
- C - Chemistrymetallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
Patent holdings for IPC class C02F 1/44
Total number of patents in this class: 7460
10-year publication summary
|
639
|
602
|
594
|
595
|
591
|
534
|
492
|
492
|
541
|
84
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1246 |
252 |
| Toray Industries, Inc. | 7016 |
197 |
| Organo Corporation | 527 |
160 |
| Evoqua Water Technologies LLC | 924 |
84 |
| Saudi Arabian Oil Company | 13865 |
68 |
| Kubota Corporation | 4154 |
63 |
| Veolia Water Solutions & Technologies Support | 535 |
61 |
| BL Technologies, Inc. | 838 |
55 |
| Hitachi, Ltd. | 15819 |
54 |
| General Electric Company | 13777 |
52 |
| Mitsubishi Heavy Industries, Ltd. | 8964 |
50 |
| LG Chem, Ltd. | 17745 |
49 |
| Nitto Denko Corporation | 8411 |
49 |
| Ecolab USA Inc. | 5673 |
48 |
| Sumitomo Electric Industries, Ltd. | 15978 |
46 |
| Asahi Kasei Kabushiki Kaisha | 2745 |
45 |
| King Fahd University of Petroleum and Minerals | 1439 |
41 |
| Nanyang Technological University | 2123 |
38 |
| Nomura Micro Science Co., Ltd. | 80 |
38 |
| Midea Group Co., Ltd. | 4746 |
35 |
| Other owners | 5975 |