- 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: 7596
10-year publication summary
|
670
|
646
|
628
|
641
|
625
|
552
|
522
|
520
|
565
|
254
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1271 |
262 |
| Toray Industries, Inc. | 7073 |
202 |
| Organo Corporation | 534 |
160 |
| Evoqua Water Technologies LLC | 931 |
90 |
| Saudi Arabian Oil Company | 13969 |
69 |
| Kubota Corporation | 4258 |
65 |
| Veolia Water Solutions & Technologies Support | 532 |
60 |
| BL Technologies, Inc. | 841 |
56 |
| Hitachi, Ltd. | 15954 |
54 |
| Ecolab USA Inc. | 5757 |
52 |
| General Electric Company | 13823 |
51 |
| Mitsubishi Heavy Industries, Ltd. | 9045 |
51 |
| LG Chem, Ltd. | 17903 |
49 |
| Nitto Denko Corporation | 8483 |
49 |
| King Fahd University of Petroleum and Minerals | 1528 |
49 |
| Sumitomo Electric Industries, Ltd. | 16195 |
46 |
| Asahi Kasei Kabushiki Kaisha | 2808 |
45 |
| Nomura Micro Science Co., Ltd. | 84 |
45 |
| Nanyang Technological University | 2175 |
38 |
| Midea Group Co., Ltd. | 4908 |
36 |
| Other owners | 6067 |