- 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: 7016
10-year publication summary
|
586
|
669
|
645
|
628
|
640
|
619
|
545
|
501
|
492
|
170
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1173 |
232 |
| Toray Industries, Inc. | 6840 |
187 |
| Organo Corporation | 445 |
127 |
| Evoqua Water Technologies LLC | 909 |
72 |
| Kubota Corporation | 3647 |
61 |
| Veolia Water Solutions & Technologies Support | 534 |
59 |
| General Electric Company | 17076 |
54 |
| LG Chem, Ltd. | 17464 |
54 |
| Hitachi, Ltd. | 15334 |
53 |
| Saudi Arabian Oil Company | 12683 |
53 |
| BL Technologies, Inc. | 826 |
52 |
| Mitsubishi Heavy Industries, Ltd. | 8573 |
49 |
| Sumitomo Electric Industries, Ltd. | 15202 |
46 |
| Asahi Kasei Kabushiki Kaisha | 2615 |
43 |
| Ecolab USA Inc. | 5414 |
43 |
| Nitto Denko Corporation | 8146 |
42 |
| Nanyang Technological University | 1935 |
34 |
| Nomura Micro Science Co., Ltd. | 76 |
34 |
| Toyobo Co., Ltd. | 2461 |
34 |
| Massachusetts Institute of Technology | 9942 |
33 |
| Other owners | 5654 |