- 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: 7786
10-year publication summary
|
671
|
646
|
628
|
641
|
625
|
553
|
527
|
523
|
576
|
448
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1294 |
270 |
| Toray Industries, Inc. | 7163 |
206 |
| Organo Corporation | 552 |
165 |
| Evoqua Water Technologies LLC | 928 |
89 |
| Saudi Arabian Oil Company | 14390 |
73 |
| Kubota Corporation | 4437 |
66 |
| Veolia Water Solutions & Technologies Support | 533 |
61 |
| BL Technologies, Inc. | 837 |
56 |
| Hitachi, Ltd. | 16221 |
54 |
| Nitto Denko Corporation | 8632 |
53 |
| Ecolab USA Inc. | 5837 |
53 |
| King Fahd University of Petroleum and Minerals | 1601 |
53 |
| Mitsubishi Heavy Industries, Ltd. | 9231 |
51 |
| General Electric Company | 13999 |
50 |
| Nomura Micro Science Co., Ltd. | 90 |
50 |
| Sumitomo Electric Industries, Ltd. | 16404 |
46 |
| Asahi Kasei Kabushiki Kaisha | 2871 |
45 |
| Nanyang Technological University | 2243 |
38 |
| Midea Group Co., Ltd. | 5083 |
36 |
| Gradiant Corporation | 151 |
35 |
| Other owners | 6236 |