- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 71/16 - Cellulose acetate
Patent holdings for IPC class B01D 71/16
Total number of patents in this class: 202
10-year publication summary
|
8
|
16
|
14
|
20
|
11
|
17
|
17
|
22
|
14
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 6867 |
16 |
| Toyobo Co., Ltd. | 2477 |
15 |
| FUJIFILM Manufacturing Europe B.V. | 268 |
8 |
| FUJIFILM Corporation | 29188 |
7 |
| Saudi Arabian Oil Company | 12808 |
7 |
| Sartorius Stedim Biotech GmbH | 823 |
6 |
| Arkema France | 3986 |
4 |
| Beijing Baoshengtong International Electric Engineering Technology Co., Ltd. | 4 |
4 |
| Board of Regents, The University of Texas System | 5738 |
3 |
| Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation | 297 |
3 |
| China Petroleum & Chemical Corporation | 1861 |
3 |
| Daicen Membrane-systems Ltd. | 23 |
3 |
| Kurita Water Industries Ltd. | 1182 |
3 |
| Kyoeisha Chemical Co., Ltd. | 79 |
3 |
| National University Corporation Kobe University | 517 |
3 |
| National University of Singapore | 2419 |
3 |
| LG Chem, Ltd. | 17538 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8616 |
2 |
| Bayer HealthCare LLC | 1361 |
2 |
| Hitachi, Ltd. | 15402 |
2 |
| Other owners | 103 |