- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 69/04 - Tubular membranes
Patent holdings for IPC class B01D 69/04
Total number of patents in this class: 388
10-year publication summary
|
28
|
47
|
22
|
39
|
26
|
24
|
32
|
38
|
30
|
16
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NGK Insulators, Ltd. | 4853 |
45 |
| Chongqing Runze Pharmaceutical Co., Ltd. | 77 |
8 |
| Sumitomo Chemical Company, Limited | 8986 |
7 |
| Mitsubishi Chemical Corporation | 4465 |
7 |
| Technologies Avancees & Membranes Industrielles | 39 |
7 |
| Commonwealth Scientific and Industrial Research Organisation | 1633 |
6 |
| Entegris, Inc. | 1848 |
6 |
| Sumitomo Electric Industries, Ltd. | 15202 |
5 |
| Saudi Arabian Oil Company | 12683 |
5 |
| Fibracast Ltd. | 29 |
4 |
| Steri-flow Filtration Systems (Aust) Pty Ltd | 5 |
4 |
| Samsung Electronics Co., Ltd. | 142124 |
3 |
| BASF SE | 20616 |
3 |
| FUJIFILM Corporation | 29082 |
3 |
| DIC Corporation | 3720 |
3 |
| IDEX Health & Science LLC | 206 |
3 |
| Oridion Medical 1987 Ltd. | 172 |
3 |
| Perma Pure LLC | 18 |
3 |
| Praxair Technology, Inc. | 1317 |
3 |
| Shanghai Advanced Research Institute, Chinese Academy of Sciences | 47 |
3 |
| Other owners | 257 |