- 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: 348
10-year publication summary
39
|
28
|
47
|
22
|
39
|
26
|
24
|
31
|
34
|
7
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
NGK Insulators, Ltd. | 4589 |
43 |
Chongqing Runze Pharmaceutical Co., Ltd. | 81 |
8 |
Mitsubishi Chemical Corporation | 4313 |
7 |
Technologies Avancees & Membranes Industrielles | 36 |
6 |
Sumitomo Electric Industries, Ltd. | 14131 |
5 |
Commonwealth Scientific and Industrial Research Organisation | 1652 |
5 |
Entegris, Inc. | 1736 |
4 |
Fibracast Ltd. | 28 |
4 |
Steri-flow Filtration Systems (Aust) Pty Ltd | 5 |
4 |
BASF SE | 19740 |
3 |
FUJIFILM Corporation | 27102 |
3 |
Baltimore Aircoil Company, Inc. | 156 |
3 |
DIC Corporation | 3597 |
3 |
IDEX Health & Science LLC | 205 |
3 |
Nederlandse Organisatie voor Toegepast-natuurwetenschappelijk Onderzoek TNO | 2362 |
3 |
Oridion Medical 1987 Ltd. | 174 |
3 |
Perma Pure LLC | 13 |
3 |
Praxair Technology, Inc. | 1367 |
3 |
Saudi Arabian Oil Company | 11322 |
3 |
Shanghai Advanced Research Institute, Chinese Academy of Sciences | 43 |
3 |
Other owners | 229 |