- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 69/04 - Tubular membranes
Patent holdings for IPC class B01D 69/04
Total number of patents in this class: 374
10-year publication summary
|
28
|
47
|
22
|
39
|
26
|
24
|
31
|
36
|
30
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NGK Insulators, Ltd. | 4792 |
45 |
| Chongqing Runze Pharmaceutical Co., Ltd. | 77 |
8 |
| Mitsubishi Chemical Corporation | 4447 |
7 |
| Commonwealth Scientific and Industrial Research Organisation | 1675 |
6 |
| Entegris, Inc. | 1814 |
6 |
| Technologies Avancees & Membranes Industrielles | 36 |
6 |
| Sumitomo Electric Industries, Ltd. | 14972 |
5 |
| Saudi Arabian Oil Company | 12446 |
5 |
| Fibracast Ltd. | 29 |
4 |
| Steri-flow Filtration Systems (Aust) Pty Ltd | 5 |
4 |
| Samsung Electronics Co., Ltd. | 139001 |
3 |
| BASF SE | 20432 |
3 |
| FUJIFILM Corporation | 28805 |
3 |
| DIC Corporation | 3669 |
3 |
| IDEX Health & Science LLC | 205 |
3 |
| Nederlandse Organisatie voor Toegepast-natuurwetenschappelijk Onderzoek TNO | 2378 |
3 |
| Oridion Medical 1987 Ltd. | 171 |
3 |
| Perma Pure LLC | 13 |
3 |
| Praxair Technology, Inc. | 1330 |
3 |
| Shanghai Advanced Research Institute, Chinese Academy of Sciences | 47 |
3 |
| Other owners | 248 |