- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 71/18 - Mixed esters, e.g. cellulose acetate-butyrate
Patent holdings for IPC class B01D 71/18
Total number of patents in this class: 30
10-year publication summary
|
3
|
5
|
3
|
6
|
4
|
3
|
2
|
1
|
0
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 7143 |
9 |
| Daicel Corporation | 2555 |
5 |
| Sartorius Stedim Biotech GmbH | 881 |
3 |
| Saudi Arabian Oil Company | 14329 |
3 |
| Uop LLC | 4397 |
1 |
| Kaneka Corporation | 4745 |
1 |
| Aramco Services Company | 4192 |
1 |
| Kurita Water Industries Ltd. | 1290 |
1 |
| Kyushu University, National University Corporation | 1732 |
1 |
| Nanopareil, LLC | 13 |
1 |
| Sumitomo Dainippon Pharma Co., Ltd. | 211 |
1 |
| Toyobo Co., Ltd. | 2537 |
1 |
| Hangzhou Cobetter Filtration Equipment Co., Ltd | 32 |
1 |
| Sumitomo Pharma Co., Ltd. | 558 |
1 |
| Other owners | 0 |