- 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: 7269
10-year publication summary
|
542
|
638
|
601
|
594
|
595
|
590
|
531
|
484
|
491
|
416
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1207 |
240 |
| Toray Industries, Inc. | 7000 |
195 |
| Organo Corporation | 489 |
146 |
| Evoqua Water Technologies LLC | 920 |
78 |
| Kubota Corporation | 3986 |
63 |
| Saudi Arabian Oil Company | 13409 |
61 |
| Veolia Water Solutions & Technologies Support | 535 |
61 |
| Hitachi, Ltd. | 15588 |
54 |
| LG Chem, Ltd. | 17676 |
53 |
| General Electric Company | 13858 |
52 |
| BL Technologies, Inc. | 836 |
51 |
| Mitsubishi Heavy Industries, Ltd. | 8803 |
50 |
| Sumitomo Electric Industries, Ltd. | 15647 |
46 |
| Nitto Denko Corporation | 8338 |
45 |
| Asahi Kasei Kabushiki Kaisha | 2698 |
44 |
| Ecolab USA Inc. | 5528 |
43 |
| Nanyang Technological University | 2042 |
38 |
| King Fahd University of Petroleum and Minerals | 1280 |
37 |
| Nomura Micro Science Co., Ltd. | 80 |
37 |
| Midea Group Co., Ltd. | 4612 |
35 |
| Other owners | 5840 |