- 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: 210
10-year publication summary
|
16
|
14
|
20
|
11
|
17
|
17
|
22
|
14
|
6
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 7139 |
13 |
| Toyobo Co., Ltd. | 2535 |
12 |
| Sartorius Stedim Biotech GmbH | 879 |
10 |
| Yestar Advanced Materials (HK) Co., Limited | 42 |
8 |
| Saudi Arabian Oil Company | 14305 |
7 |
| FUJIFILM Corporation | 30594 |
6 |
| Arkema France | 4251 |
4 |
| Kurita Water Industries Ltd. | 1290 |
4 |
| National University Corporation Kobe University | 574 |
4 |
| Beijing Baoshengtong International Electric Engineering Technology Co., Ltd. | 4 |
4 |
| Toyobo MC Corporation | 535 |
4 |
| Board of Regents, The University of Texas System | 6141 |
3 |
| Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation | 293 |
3 |
| China Petroleum & Chemical Corporation | 2166 |
3 |
| Daicen Membrane-systems Ltd. | 24 |
3 |
| Kyoeisha Chemical Co., Ltd. | 84 |
3 |
| National University of Singapore | 2595 |
3 |
| Mitsubishi Heavy Industries, Ltd. | 9168 |
2 |
| Hitachi, Ltd. | 16163 |
2 |
| Uop LLC | 4390 |
2 |
| Other owners | 110 |