- 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: 7752
10-year publication summary
|
671
|
646
|
628
|
641
|
625
|
553
|
524
|
523
|
576
|
405
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1290 |
269 |
| Toray Industries, Inc. | 7139 |
207 |
| Organo Corporation | 542 |
163 |
| Evoqua Water Technologies LLC | 934 |
93 |
| Saudi Arabian Oil Company | 14305 |
74 |
| Kubota Corporation | 4409 |
66 |
| Veolia Water Solutions & Technologies Support | 533 |
61 |
| BL Technologies, Inc. | 839 |
56 |
| Hitachi, Ltd. | 16163 |
54 |
| Nitto Denko Corporation | 8558 |
53 |
| Ecolab USA Inc. | 5813 |
52 |
| King Fahd University of Petroleum and Minerals | 1587 |
52 |
| Mitsubishi Heavy Industries, Ltd. | 9168 |
51 |
| General Electric Company | 13915 |
50 |
| Nomura Micro Science Co., Ltd. | 89 |
49 |
| Sumitomo Electric Industries, Ltd. | 16448 |
46 |
| Asahi Kasei Kabushiki Kaisha | 2840 |
45 |
| Nanyang Technological University | 2223 |
38 |
| Midea Group Co., Ltd. | 5052 |
36 |
| Gradiant Corporation | 150 |
35 |
| Other owners | 6202 |