- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 63/12 - Spiral-wound membrane modules comprising multiple spiral-wound assemblies
Patent holdings for IPC class B01D 63/12
Total number of patents in this class: 214
10-year publication summary
|
20
|
12
|
19
|
18
|
20
|
19
|
11
|
10
|
6
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nitto Denko Corporation | 7879 |
16 |
| Toray Industries, Inc. | 6652 |
16 |
| Dow Global Technologies LLC | 10147 |
10 |
| EMD Millipore Corporation | 657 |
8 |
| General Electric Company | 18133 |
6 |
| BL Technologies, Inc. | 831 |
6 |
| Toray Advanced Materials Korea Inc. | 222 |
5 |
| Membrane Technology and Research, Inc. | 92 |
5 |
| Midea Group Co., Ltd. | 4025 |
5 |
| Pall Corporation | 392 |
5 |
| Aqua Membranes, Inc. | 33 |
5 |
| DDP Specialty Electronic Materials US, LLC | 442 |
5 |
| Hitachi, Ltd. | 16452 |
4 |
| FUJIFILM Corporation | 27102 |
4 |
| BP Exploration Operating Company Limited | 270 |
4 |
| Hydranautics | 20 |
3 |
| MN Beteiligungs GmbH | 4 |
3 |
| Foshan Midea Chungho Water Purification Equipment Co., Ltd. | 46 |
3 |
| Henkel AG & Co. KGaA | 10129 |
2 |
| Ebara Corporation | 1951 |
2 |
| Other owners | 97 |